Head-to-head comparison

GPT-5.4 vs. Gemini 4 Argon

Compare published benchmark results from matching versions and cohorts, API pricing, and technical specifications. Any documented test setup differences remain visible.

shared result series: 72
distinct benchmark metrics: 8
latest retrieval: 2026-10-16

First modelSecond model

Specifications

General specifications

Release date, availability, context window, architecture, and published parameter counts at a glance. Undisclosed details remain marked as unavailable.

Specifications for GPT-5.4 and Gemini 4 Argon
Attribute	GPT-5.4	Gemini 4 Argon
Provider	OpenAI	Google DeepMind
Released	Mar 5, 2026	Oct 13, 2026
Availability	Active	Active
Model type	Proprietary	Proprietary
Parameters	Not published	Not published
Architecture	Not published	Not published
Context window	1,050,000 tokens	1,048,576 tokens shared across input, thinking, and output
Knowledge cutoff	August 31, 2025	Not published
Technical sources	Model	Model

Pricing

API pricing compared

The table compares official standard API rates per 1M tokens, including published cache pricing. Batch, fast, priority, regional surcharges, tool calls, and cloud platform pricing are excluded.

API pricing for GPT-5.4 and Gemini 4 Argon
Price type	GPT-5.4	Gemini 4 Argon
API input	$2.5 ≤272K / $5 >272K	$2
API output	$15 ≤272K / $22.5 >272K	$10
Cache read	$0.25 ≤272K / $0.5 >272K	$0.1
Cache write (5 min.)	Not listed	Not listed
Cache write (1 hr.)	Not listed	Not listed
Price verified	09/22/2026 Source	10/25/2026 Source
Gemini 4 Argon, Standard pricing through November 30, 2026 Per 1 million tokens: $2.00 input, $10.00 output including thinking, and $0.10 cached input. Source
Gemini 4 Argon, Standard pricing from December 1, 2026 Per 1 million tokens: $4.00 input, $20.00 output including thinking, and $0.20 cached input. Source
Gemini 4 Argon, Caching Implicit caching only; explicit caching is not supported. Source

GPT-5.4Gemini 4 Argon

API inputUSD per 1M tokens, base tier

GPT-5.4$2.5

Gemini 4 Argon$2

API outputUSD per 1M tokens, base tier

GPT-5.4$15

Gemini 4 Argon$10

Cache readUSD per 1M tokens, base tier

GPT-5.4$0.25

Gemini 4 Argon$0.1

Key to the marks:better valuebetter, but not conclusivetie

Pricing by provider

Direct developer pricing and provider endpoint tariffs routed through OpenRouter are listed separately. Prices are in USD per 1M tokens. Context-dependent direct tiers plus regional, Flex, Priority, and other OpenRouter tariffs remain individually identifiable.

No provider tariff for Gemini 4 Argon is available in the stored OpenRouter snapshot. The official direct price is still shown.

Provider pricing for GPT-5.4 and Gemini 4 Argon
Model	Provider	Purchase route and tariff	Input per 1M tokens	Output per 1M tokens	Source
GPT-5.4	OpenAI	Direct from developerUp to 272,000 context tokens	Lowest listed price: $2.5	Lowest listed price: $15	Source09/22/2026
	OpenAI	Direct from developerAbove 272,000 context tokens	$5	$22.5	Source09/22/2026
	Amazon Bedrock	Via OpenRouteramazon-bedrock/us-east-1	$2.75	$16.5	Source10/26/2026
	Azure	Via OpenRouterazure	Lowest listed price: $2.5	Lowest listed price: $15	Source10/26/2026
	Azure	Via OpenRouterazure/eu	$2.75	$16.5	Source10/26/2026
	Azure	Via OpenRouterazure/us	$2.75	$16.5	Source10/26/2026
	OpenAI	Via OpenRouteropenai	Lowest listed price: $2.5	Lowest listed price: $15	Source10/26/2026
	OpenAI	Via OpenRouteropenai/fast	$5	$30	Source10/26/2026
Gemini 4 Argon	Google DeepMind	Direct from developerStandard API	Lowest listed price: $2	Lowest listed price: $10	Source10/25/2026

Benchmark index

Benchmark index compared

The index combines independent benchmarks on a scale from 0 to 100. A lead only counts when a model comes first in at least 95% of 200 recalculations with randomly redrawn test families. Otherwise both count as level.

Open the AI leaderboard

GPT-5.4

Overall index

24.7

Gemini 4 Argon

Overall index

92.6

Gemini 4 Argon leads in 8 of 8 shared areas.

Area	GPT-5.4	Gemini 4 Argon
Coding	21.1	92.4
Reasoning	30.5	91.6
Knowledge	23.9	93.6
General	26.6	90.2
Finance	27.0	94.6
Legal	19.7	94.9
Health	18.1	92.8
Education	23.5	93.6

Performance

Shared benchmarks

Only published results with the same benchmark version, task, metric, and comparison cohort are paired. Different reasoning levels, agents, harnesses, or output limits appear directly in the table.

Capability profile from matched benchmarks

Each axis averages directly matched benchmark families. A value of 100 means the stronger value within this pair, not a universal quality score.

Not enough directly matched categories for a reliable radar

Only 0 of at least 5 categories have comparable, direct model measurements. The benchmark tables below show the available evidence without filling missing axes.

GPT-5.4Gemini 4 Argon

Code MigrationOverall. Higher is better. Test setup not documented as identical

GPT-5.434.984 %

Gemini 4 Argon68.173 %

Harvey's Legal Agent BenchmarkOverall · Task fully resolved. Higher is better. Test setup not documented as identical

GPT-5.40 %

Gemini 4 Argon19.583 %

LegalBenchOverall. Higher is better. Test setup not documented as identical

GPT-5.486.044 %

Gemini 4 Argon88.299 %

MedCodeOverall. Higher is better. Test setup not documented as identical

GPT-5.441.292 %

Gemini 4 Argon58.801 %

MedScribeOverall. Higher is better. Test setup not documented as identical

GPT-5.477.549 %

Gemini 4 Argon87.427 %

ProgramBenchOverall. Higher is better. Test setup not documented as identical

GPT-5.40 %

Gemini 4 Argon2.5 %

SAGEOverall. Higher is better. Test setup not documented as identical

GPT-5.443.312 %

Gemini 4 Argon53.645 %

Vibe Code Bench v1.1Overall. Higher is better. Test setup not documented as identical

GPT-5.467.421 %

Gemini 4 Argon91.906 %

Code MigrationCLI. Higher is better. Test setup not documented as identical

GPT-5.423.788 %

Gemini 4 Argon67.564 %

Harvey's Legal Agent BenchmarkAntitrust Competition · Criteria passed. Higher is better. Test setup not documented as identical

GPT-5.476.449 %

Gemini 4 Argon94.203 %

LegalBenchConclusion Tasks. Higher is better. Test setup not documented as identical

GPT-5.488.939 %

Gemini 4 Argon90.847 %

ProgramBenchAlmost Resolved. Higher is better. Test setup not documented as identical

GPT-5.47 %

Gemini 4 Argon41 %

Key to the marks:better valuebetter, but not conclusivetie

Benchmark scores for GPT-5.4 and Gemini 4 Argon
Benchmark and task	GPT-5.4	Gemini 4 Argon	Source
Code MigrationOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	34.984 %	Higher measured value68.173 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkOverall · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value19.583 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	86.044 %	Higher measured value88.299 %	Vals AI Source details Data as of: 10/13/2026
MedCodeOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	41.292 %	Higher measured value58.801 %	Vals AI Source details Data as of: 10/13/2026
MedScribeOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	77.549 %	Higher measured value87.427 %	Vals AI Source details Data as of: 10/13/2026
ProgramBenchOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: fully resolved rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value2.5 %	Vals AI Source details Data as of: 10/12/2026
SAGEOverall Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	43.312 %	Higher measured value53.645 %	Vals AI Source details Data as of: 10/08/2026
Vibe Code Bench v1.1Overall Test details Test setup not documented as identicalNo direct winnerVersion: 1.1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Harness: OpenHands, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Harness: OpenHands, Temperature: 1, Output limit: 262,144 tokens	67.421 %	Higher measured value91.906 %	Vals AI Source details Data as of: 10/12/2026
Code MigrationCLI Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	23.788 %	Higher measured value67.564 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkAntitrust Competition · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	76.449 %	Higher measured value94.203 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchConclusion Tasks Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	88.939 %	Higher measured value90.847 %	Vals AI Source details Data as of: 10/13/2026
ProgramBenchAlmost Resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: almost-resolved rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	7 %	Higher measured value41 %	Vals AI Source details Data as of: 10/12/2026
SAGEAutomata Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	21.428 %	Higher measured value45.635 %	Vals AI Source details Data as of: 10/08/2026
Code MigrationCOBOL Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	68.571 %	Higher measured value70 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkAntitrust Competition · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchInterpretation Tasks Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	83.921 %	Higher measured value84.097 %	Vals AI Source details Data as of: 10/13/2026
ProgramBenchFully Resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: fully resolved rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value2.5 %	Vals AI Source details Data as of: 10/12/2026
SAGECalculus Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	70.988 %	Higher measured value84.877 %	Vals AI Source details Data as of: 10/08/2026
Code MigrationCode Quality Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: mean reviewer code-quality ratingScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	Higher measured value3.632 / 5	3.574 / 5	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkArbitration International Dispute Resolution · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	66.667 %	Higher measured value94.265 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchIssue Tasks Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	90.526 %	Higher measured value92.941 %	Vals AI Source details Data as of: 10/13/2026
ProgramBenchRaw Pass Rate Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: raw test pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	68.596 %	Higher measured value83.715 %	Vals AI Source details Data as of: 10/12/2026
SAGELinear Algebra Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	68.826 %	Higher measured value74.031 %	Vals AI Source details Data as of: 10/08/2026
Harvey's Legal Agent BenchmarkArbitration International Dispute Resolution · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchRhetoric Tasks Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	82.824 %	Higher measured value82.838 %	Vals AI Source details Data as of: 10/13/2026
SAGEPartial Differential Equations Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 30,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	39.683 %	Higher measured value41.27 %	Vals AI Source details Data as of: 10/08/2026
Harvey's Legal Agent BenchmarkBanking Finance · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	80.297 %	Higher measured value95.911 %	Vals AI Source details Data as of: 10/12/2026
LegalBenchRule Tasks Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: accuracyScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	84.008 %	Higher measured value90.774 %	Vals AI Source details Data as of: 10/13/2026
Harvey's Legal Agent BenchmarkBanking Finance · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkBankruptcy Restructuring · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	68.512 %	Higher measured value91.349 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkBankruptcy Restructuring · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCapital Markets · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	81.569 %	Higher measured value95.686 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCapital Markets · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value40 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCorporate Governance · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	72.945 %	Higher measured value97.26 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCorporate Governance · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCorporate Ma · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	81.731 %	Higher measured value96.154 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkCorporate Ma · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkData Privacy Cybersecurity · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	79.152 %	Higher measured value97.527 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkData Privacy Cybersecurity · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEmerging Companies Venture Capital · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	69.625 %	Higher measured value94.881 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEmerging Companies Venture Capital · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value40 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEmployment Labor · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	64.794 %	Higher measured value88.764 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEmployment Labor · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEnergy Natural Resources · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	87.459 %	Higher measured value96.7 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEnergy Natural Resources · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEnvironmental Esg · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	72.401 %	Higher measured value95.341 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkEnvironmental Esg · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkFunds Asset Management · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	71.137 %	Higher measured value93.003 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkFunds Asset Management · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value40 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkHealthcare Life Sciences · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	74.257 %	Higher measured value92.739 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkHealthcare Life Sciences · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkImmigration · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	72.364 %	Higher measured value92.364 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkImmigration · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkInsurance · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	73.26 %	Higher measured value93.04 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkInsurance · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkIntellectual Property · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	82.332 %	Higher measured value96.466 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkIntellectual Property · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkInternational Trade Sanctions · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	74.603 %	Higher measured value93.254 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkInternational Trade Sanctions · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	0 %	Higher measured value20 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkLitigation Dispute Resolution · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	76.779 %	Higher measured value92.884 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkLitigation Dispute Resolution · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkOverall · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	74.497 %	Higher measured value94.037 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkReal Estate · Criteria passed Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: criteria pass rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	80.758 %	Higher measured value95.918 %	Vals AI Source details Data as of: 10/12/2026
Harvey's Legal Agent BenchmarkReal Estate · Task fully resolved Test details Test setup not documented as identicalNo direct winnerVersion: 1Metric: task resolution rateScoring: Higher is betterGPT-5.4: Snapshot: gpt-5.4-2026-03-05, Reasoning: xhigh, Output limit: 128,000 tokens Gemini 4 Argon: Reasoning: high, Temperature: 1, Output limit: 262,144 tokens	No direct winner0 %	No direct winner0 %	Vals AI Source details Data as of: 10/12/2026
Key to the marks:better valuebetter, but not conclusivetie

Our model tests

Our tests

SVG short test

One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.

Shared test round: 43b8c5c46830

GPT-5.4

Unavailable in this round

Gemini 4 Argon

Unavailable in this round

Earlier tests

Pelican on a bicycle

A community classic for free-form SVG drawing.

GPT-5.4

Reasoning (requested): high

Current attempt

Run date: Oct 1, 2026
API provider: openrouter
Requested API model: openai/gpt-5.4
API model reported in response: openai/gpt-5.4
Reasoning setting: high
Pinned endpoint: OpenAI | openai/gpt-5.4-20260305
Temperature: Provider default
Token limit including reasoning: 8,192 tokens
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating
Response time: 116.8 s

Visually reviewed. This individual test does not establish overall model quality.

Earlier attempts (1)

Sep 7, 2026API request failedReasoning setting: high

Gemini 4 Argon

Not tested yet

Prompt and test conditions

Generate an SVG of a pelican riding a bicycle

Token limit including reasoning: 8,192 tokens

Task origin (Simon Willison)

How to read this comparison

Winning one benchmark is not an overall verdict

Your workload, budget, and required context length matter most. A coding benchmark says little about visual understanding or agent performance.

The standard price table uses direct developer rates. The provider comparison labels OpenRouter endpoints, regions, and special tariffs separately.

Every result links to its measurement source and retrieval date. Labels distinguish vendor reports, official benchmark leaderboards, and independent evaluations. Disputed or archived results are excluded.

More matchups

Compare GPT-5.4 and Gemini 4 Argon with other leading models using the same data and benchmark logic.

View the complete LLM comparison

GPT-5.4 vs. Gemini 4 Argon

Change model selection

General specifications

API pricing compared

Benchmark index compared

Shared benchmarks

Capability profile from matched benchmarks

Our tests

SVG short test

GPT-5.4

Gemini 4 Argon

Pelican on a bicycle

Winning one benchmark is not an overall verdict

Related LLM comparisons