OpenAIGoogleLLM matchup

GPT-6 Lunavs.Gemini 3.5 Flash-Lite

Which one is better?

GPT-6 Luna performs better than Gemini 3.5 Flash-Lite and is cheaper: Gemini 3.5 Flash-Lite costs 3 times (input) and 5 times (output) as much.

GPT-6 Luna ahead

IntelligenceOverall index, 100 points = average

96.3

GPT-6 Luna

Rank 35

73.6

Gemini 3.5 Flash-Lite

Rank 57

Gemini 3.5 Flash-Lite faster

SpeedTokens per second

101

GPT-6 Luna

299

Gemini 3.5 Flash-Lite

GPT-6 Luna cheaper

Price$ per 1M tokens

$0.20

GPT-6 Luna

$0.85

Gemini 3.5 Flash-Lite

GPT-6 Luna more popular

Popularity0 to 100

GPT-6 Luna

Rank 30 of 785

Gemini 3.5 Flash-Lite

Rank 228 of 785

Above 272,000 tokens of context, GPT-6 Luna costs more: $0.20 input and $0.75 output per 1M tokens.

Choose GPT-6 Luna for

CybersecurityAgentsCodingReasoningFinanceProductivityHealthEducationGeneralLegalKnowledge (not certain)Multimodal (not certain)

Choose Gemini 3.5 Flash-Lite for

No clear advantage

Where is the difference?

Strengths at a glance

GPT-6 LunaGemini 3.5 Flash-LiteMedian of all ranked models

CodingGPT-6 Luna ahead

GPT-6 Luna97.5Rank 35

Gemini 3.5 Flash-Lite70.1Rank 74

Median of ranked models84.1

95 % range: GPT-6 Luna 94.5 to 100.5, Gemini 3.5 Flash-Lite 64.2 to 75.9.

AreaGPT-6 LunaGemini 3.5 Flash-Lite

The same values and verdicts as the bars below. In the close-up the net starts at 65 points, just below the weaker model's lowest value; the reference group average is 100. Not in the net because a model has no own value there or the data are too thin: Mathematics.

GPT-6 Luna is ahead in 7 of 10 areas, Gemini 3.5 Flash-Lite in none.

GPT-6 Luna ahead: 7GPT-6 Luna slightly ahead: 2too little data: 1

Areas in the overall index

AgentsGPT-6 Luna +2899.5 to 71.5

CodingGPT-6 Luna +2797.5 to 70.1

ReasoningGPT-6 Luna +2597.8 to 72.9

GeneralGPT-6 Luna +2094.4 to 74.5

Knowledgeleaning GPT-6 Lunanot certain · 2 tests each

Multimodalleaning GPT-6 Lunanot certain · 2 and 3 tests

Mathematicsonly GPT-6 Luna has a score

Specialist fields

FinanceGPT-6 Luna +2398.3 to 75.5

HealthGPT-6 Luna +2295.2 to 73.7

LegalGPT-6 Luna +1990.7 to 72.0

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

Show 4 more areas that do not count toward the overall index

CybersecurityGPT-6 Luna +29101.8 to 72.6

ProductivityGPT-6 Luna +2390.5 to 68.0

EducationGPT-6 Luna +2193.0 to 71.9

Searchonly GPT-6 Luna has a score

Bar length shows the gap in index points (full width 15 points, one standard deviation of the reference group). Solid means clearly ahead, hatched not certain yet, a thin grey bar level.

GPT-6 Luna vs. Gemini 3.5 Flash-Lite at the same effort

Both models measured at the same reasoning efforts. This shows whether a lead comes from the model or only from more compute.

highGPT-6 Luna ahead

GPT-6 Luna 87.1 vs. Gemini 3.5 Flash-Lite 73.6 · Gap 15.9 · Test series 11

Overall index (max vs. high)GPT-6 Luna ahead

GPT-6 Luna 96.3 vs. Gemini 3.5 Flash-Lite 73.6

Effort	GPT-6 Luna	Gemini 3.5 Flash-Lite	Gap	Verdict	Test series
high	87.1	73.6	15.9	GPT-6 Luna ahead	11
Overall index (max vs. high)	96.3	73.6	22.7	GPT-6 Luna ahead

Gap and verdict compare only the Artificial Analysis test series in which both models are measured at that effort. Tied below 3 points, ahead only beyond two standard errors. The single values rest on all test series of each model, so their difference can deviate from the gap.

Which model for which task?

Everyday tasks, translated from the area values above. Each row names the values it rests on.

TaskBetter choicebased on

Writing and debugging codeGPT-6 LunaCoding 97.5 to 70.1

Maths and data analysisGPT-6 LunaMathematics without a score for Gemini 3.5 Flash-Lite, Reasoning 97.8 to 72.9

Facts and researchleaning GPT-6 LunaKnowledge 89.2 to 77.1, Search without a score for Gemini 3.5 Flash-Lite

Agents and workflowsGPT-6 LunaAgents 99.5 to 71.5

Fast chat repliesGemini 3.5 Flash-Lite101 to 299 tokens per second

Security analysisGPT-6 LunaCybersecurity 101.8 to 72.6

Many requests on a small budgetGPT-6 Luna$0.20 to $0.85 per 1M tokens

Finance, legal and medical textsGPT-6 LunaFinance 98.3 to 75.5, Legal 90.7 to 72.0, Health 95.2 to 73.7

Images, screenshots and PDFsleaning GPT-6 LunaMultimodal 92.0 to 82.7

See for yourself: same task, one attempt

The same prompt for both models. We show the latest attempt without fixes; it does not count toward the overall index.

Pelican on a bicycle

Prompt

Generate an SVG of a pelican riding a bicycle

Task origin: Simon Willison

GPT-6 Luna

Oct 1, 2026 · 47 s · $0.0022

Test details

Run date: Oct 1, 2026
API provider: openrouter
Requested API model: openai/gpt-6-luna
Reasoning setting: high
Token limit including reasoning: 8,192 tokens
Output tokens: 4,493 tokens
Cost of the attempt: $0.0022
Response time: 46.7 s
API model reported in response: openai/gpt-6-luna
Pinned endpoint: OpenAI | openai/gpt-6-luna-20260922
Temperature: Provider default
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating

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

Gemini 3.5 Flash-Lite

Oct 2, 2026 · 14 s · $0.01

Test details

Run date: Oct 2, 2026
API provider: openrouter
Requested API model: google/gemini-3.5-flash-lite
Reasoning setting: high
Token limit including reasoning: 8,192 tokens
Output tokens: 5,414 tokens
Cost of the attempt: $0.0135
Response time: 14.3 s
API model reported in response: google/gemini-3.5-flash-lite
Pinned endpoint: Google AI Studio | google/gemini-3.5-flash-lite-20260721
Temperature: Provider default
Test protocol: community-visual-tests-v1
Technical checks: Passed, not a quality rating

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

Earlier attempts (2)

Oct 1, 2026API request failedReasoning setting: high
Sep 7, 2026API request failedReasoning setting: high

SVG short test

One SVG task with the same fixed settings for every model, without hidden thinking.

Prompt

Return only one standalone SVG of a pelican riding a bicycle. Use viewBox="0 0 800 600", simple shapes, two clearly visible wheels and a recognizable pelican with a long beak. At most 30 SVG elements and 1800 characters. No Markdown, explanations, comments, scripts, animation, CSS or external resources.

GPT-6 Luna

Unavailable in this round

Gemini 3.5 Flash-Lite

Unavailable in this round

GPT-6 Luna and Gemini 3.5 Flash-Lite in the overall index

Every model with a place in the overall index, both models of this matchup highlighted. You can add or hide other models.

Overall index (Gradually Meta-Score v4)

20 of 92 models

5 models in this view are measured at a lower reasoning effort than max in the overall index. Dashed column: lower reasoning effort than the top.

Claude Opus 5.5max126.1

Gemini 4 Carbonhigh125.8

Claude Fable 5.1max123.8

Claude Sonnet 5.5max122.8

Gemini 4 Argonhigh122.3

GPT-6 Astramax121.3

GPT-6.1 Solmax119.2

Muse Wonder Fullmax118.3

Claude Opus 5max117.2

Muse Wondermax113.4

Kimi K3.1 Promax112.9

Claude Fable 5max112.5

GPT-6 Solmax110.5

GPT-5.6 Solmax108.7

Muse Spark 1.3max107.4

Gemini 3.7 Flashhigh107.1

DeepSeek V4.1 Flash 1017max106.6

Gemini 3.8 Flashhigh106.5

GPT-6 Lunamax96.3

Gemini 3.5 Flash-Litehigh73.6

Claude Opus 5.5

Gemini 4 Carbon

Claude Fable 5.1

Claude Sonnet 5.5

Gemini 4 Argon

GPT-6 Astra

GPT-6.1 Sol

Muse Wonder Full

Claude Opus 5

Muse Wonder

Kimi K3.1 Pro

Claude Fable 5

GPT-6 Sol

GPT-5.6 Sol

Muse Spark 1.3

Gemini 3.7 Flash

DeepSeek V4.1 Flash 1017

Gemini 3.8 Flash

GPT-6 Luna

Gemini 3.5 Flash-Lite

Popularity compared

How often the models are searched for, used and mentioned, on a scale from 0 to 100.

GPT-6 Luna is more popular than Gemini 3.5 Flash-Lite: 60 to 43 out of 100.

Over time

Weekly values from October 18, 2026 to November 7, 2026

GPT-6 LunaGemini 3.5 Flash-Lite

All data side by side

The better value is bold. For the overall index only when the gap is clear.

Metric	GPT-6 Luna	Gemini 3.5 Flash-Lite
Intelligence
Overall indexpoints, 100 = reference group average, higher is better	96.3	73.6
Rank	Rank 35 of 92	Rank 57 of 92
Price per 1M tokens
Inputwhat you send	$0.10above 272,000 tokens: $0.20	$0.30
Outputwhat the model writes	$0.50above 272,000 tokens: $0.75	$2.50
Cost per task (own tests)average of 3 original-protocol tasks both models passed (SVG short test not included)	$0.003	$0.022
Speed
Tokens per second	101	299
Popularity
Popularitysearch, usage and mentions, 0 to 100	60Rank 30 of 785	43Rank 228 of 785
Technical
Context windowhow much text the model reads at once	1.05 M tokens≈ 1,580 A4 pages	1.05 M tokens≈ 1,570 A4 pages
Knowledge cutoff	May 18, 2026	n/a
Released	Sep 22, 2026	Jul 21, 2026
Availability	Active	Active
Open weights	no	no

Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis

Is there a better choice?

As cheap as GPT-6 LunaClaude Haiku 5.5

Overall index 103.4, rank 20$0.10 input and $0.50 output per 1M tokens

GPT-6 Luna vs. Claude Haiku 5.5

Best model in the overall indexClaude Opus 5.5

Overall index 126.1, rank 1$4 input and $20 output per 1M tokens

GPT-6 Luna vs. Claude Opus 5.5

Shared benchmarks

Single results from the same benchmark version, task and metric. A value is bold only with the same test setup and a clear gap.

A: GPT-6 LunaB: Gemini 3.5 Flash-Lite

Code MigrationOverall · higher is betterTest setup not documented as identical42.6%6.1%Vals AIAs of 10/29/2026

CyberBench v1.1Overall · higher is betterTest setup not documented as identical76.3%59.1%Vals AIAs of 11/05/2026

EMBOverall · higher is betterTest setup not documented as identical68.5%43.2%Vals AIAs of 10/20/2026

Finance Agent (v2)Overall · higher is betterTest setup not documented as identical49.9%47.4%Vals AIAs of 10/29/2026

ImmigrationOverall · higher is betterTest setup not documented as identical62.5%55.7%Vals AIAs of 10/28/2026

Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identical30.3%13.9%Vals AIAs of 11/05/2026

LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identical1,5791,434LMArenaAs of 10/28/2026

LMArena Text, Style ControlOverall · higher is betterTest setup not documented as identical1,4411,456LMArenaAs of 10/28/2026

LMArena Vision, Style ControlOverall · higher is betterTest setup not documented as identical1,2401,267LMArenaAs of 10/19/2026

MedCodeOverall · higher is betterTest setup not documented as identical44.7%43.5%Vals AIAs of 10/29/2026

Show 54 more benchmarks

MedScribeOverall · higher is betterTest setup not documented as identical83.7%70.9%Vals AIAs of 10/29/2026

ProgramBenchOverall · higher is betterTest setup not documented as identical0.5%0.0%Vals AIAs of 11/05/2026

Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identical57.6%51.8%Vals AIAs of 10/12/2026

SAGEOverall · higher is betterTest setup not documented as identical83.4%79.5%Vals AIAs of 11/05/2026

Tax Agent BenchOverall · higher is betterTest setup not documented as identical19.9%7.3%Vals AIAs of 11/05/2026

Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identical81.6%37.2%Vals AIAs of 11/05/2026

Code MigrationCLI · higher is betterTest setup not documented as identical37.2%5.9%Vals AIAs of 10/29/2026

CyberBench v1.1Patch · higher is betterTest setup not documented as identical87.5%73.2%Vals AIAs of 11/05/2026

EMBComps · higher is betterTest setup not documented as identical70.5%46.4%Vals AIAs of 10/20/2026

Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identical49.8%41.7%Vals AIAs of 10/29/2026

ImmigrationAll-Pass · higher is betterTest setup not documented as identical16.4%14.1%Vals AIAs of 10/28/2026

Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identical37.9%19.7%Vals AIAs of 11/05/2026

LMArena Code Arena WebDevImage to WebDev · higher is betterTest setup not documented as identical1,5711,448LMArenaAs of 10/19/2026

LMArena Text, Style ControlBusiness, management and finance · higher is betterTest setup not documented as identical1,4411,454LMArenaAs of 10/28/2026

LMArena Vision, Style ControlChinese · higher is betterTest setup not documented as identical1,2921,303LMArenaAs of 10/19/2026

ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identical8%0%Vals AIAs of 11/05/2026

SAGEComputer Science · higher is betterTest setup not documented as identical86.6%82.7%Vals AIAs of 11/05/2026

Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identical6.7%3.3%Vals AIAs of 11/05/2026

Code MigrationCOBOL · higher is betterTest setup not documented as identical58.6%7.0%Vals AIAs of 10/29/2026

CyberBench v1.1PoC · higher is betterTest setup not documented as identical65%45%Vals AIAs of 11/05/2026

EMBDataroom · higher is betterTest setup not documented as identical75.5%57.7%Vals AIAs of 10/20/2026

Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identical38.4%35.3%Vals AIAs of 10/29/2026

ImmigrationContent Checks · higher is betterTest setup not documented as identical60.8%51.7%Vals AIAs of 10/28/2026

Legal Research BenchAdministrative / Regulatory · Weighted partial credit (weighted pass) · higher is betterTest setup not documented as identical83.2%72.0%Vals AIAs of 11/05/2026

LMArena Code Arena WebDevReact development · higher is betterTest setup not documented as identical1,5751,406LMArenaAs of 10/28/2026

LMArena Text, Style ControlChinese · higher is betterTest setup not documented as identical1,4831,483LMArenaAs of 10/28/2026

LMArena Vision, Style ControlCreative writing with images · higher is betterTest setup not documented as identical1,2321,257LMArenaAs of 10/19/2026

ProgramBenchFully Resolved · higher is betterTest setup not documented as identical0.5%0.0%Vals AIAs of 11/05/2026

SAGELinear Algebra · higher is betterTest setup not documented as identical76.5%70.0%Vals AIAs of 11/05/2026

Tax Agent BenchControversy & Precedence Analysis (weighted pass) · higher is betterTest setup not documented as identical54.4%34.6%Vals AIAs of 11/05/2026

Code MigrationCode Quality · higher is betterTest setup not documented as identical3.752 / 52.652 / 5Vals AIAs of 10/29/2026

EMBDCF · higher is betterTest setup not documented as identical62.8%33.6%Vals AIAs of 10/20/2026

Finance Agent (v2)Comparables · higher is betterTest setup not documented as identical39.8%45.2%Vals AIAs of 10/29/2026

ImmigrationIntake Checks · higher is betterTest setup not documented as identical38.9%31.5%Vals AIAs of 10/28/2026

Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identical23.3%7.0%Vals AIAs of 11/05/2026

LMArena Code Arena WebDevWeb development · higher is betterTest setup not documented as identical1,5791,434LMArenaAs of 10/28/2026

LMArena Text, Style ControlCoding · higher is betterTest setup not documented as identical1,5061,502LMArenaAs of 10/28/2026

LMArena Vision, Style ControlDiagram understanding · higher is betterTest setup not documented as identical1,2751,292LMArenaAs of 10/19/2026

ProgramBenchRaw Pass Rate · higher is betterTest setup not documented as identical66.2%33.9%Vals AIAs of 11/05/2026

SAGEPartial Differential Equations · higher is betterTest setup not documented as identical85.6%85.8%Vals AIAs of 11/05/2026

Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identical16.5%3.3%Vals AIAs of 11/05/2026

EMBLBO · higher is betterTest setup not documented as identical59.1%40.1%Vals AIAs of 10/20/2026

Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identical57.6%56.1%Vals AIAs of 10/29/2026

Legal Research BenchBusiness & Commercial · Weighted partial credit (weighted pass) · higher is betterTest setup not documented as identical79.1%73.2%Vals AIAs of 11/05/2026

LMArena Text, Style ControlCreative writing · higher is betterTest setup not documented as identical1,4101,437LMArenaAs of 10/28/2026

LMArena Vision, Style ControlEnglish · higher is betterTest setup not documented as identical1,2281,267LMArenaAs of 10/19/2026

Tax Agent BenchCurrent & Temporal Analysis (weighted pass) · higher is betterTest setup not documented as identical55.3%24.9%Vals AIAs of 11/05/2026

EMBM&A · higher is betterTest setup not documented as identical72.1%43.2%Vals AIAs of 10/20/2026

Finance Agent (v2)Earnings Analysis · higher is betterTest setup not documented as identical74.2%64.4%Vals AIAs of 10/29/2026

Legal Research BenchCivil Litigation · All-pass · higher is betterTest setup not documented as identical25.9%11.1%Vals AIAs of 11/05/2026

LMArena Text, Style ControlEnglish · higher is betterTest setup not documented as identical1,4491,462LMArenaAs of 10/28/2026

LMArena Vision, Style ControlHomework · higher is betterTest setup not documented as identical1,2811,290LMArenaAs of 10/19/2026

Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identical29.5%4.7%Vals AIAs of 11/05/2026

EMBMisc · higher is betterTest setup not documented as identical68.6%48.8%Vals AIAs of 10/20/2026

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Predecessor and successor

PredecessorGPT-6 Luna vs. GPT-5.6 LunaPredecessor of GPT-6 Luna

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