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AnthropicOpenAILLM matchup

Claude Haiku 5.5vs.GPT-5.5

Which one is better?

Claude Haiku 5.5 and GPT-5.5 perform about equally well, but GPT-5.5 costs 50 times (input) and 60 times (output) as much.

level
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

100.9

GPT-5.5

Rank 24

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

79

GPT-5.5

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$11.25

GPT-5.5

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

31

GPT-5.5

Rank 452 of 875

Above 100,000 tokens of context, Claude Haiku 5.5 costs more: $0.50 input and $2.50 output per 1M tokens. Above 272,000 tokens of context, GPT-5.5 costs more: $10 input and $45 output per 1M tokens.

Choose Claude Haiku 5.5 for

CodingHealthProductivityAgents (not certain)Reasoning (not certain)General (not certain)Finance (not certain)Mathematics (not certain)

Choose GPT-5.5 for

Knowledge (not certain)Legal (not certain)

Where is the difference?

Strengths at a glance

Haiku 5.5GPT-5.5

The median of all ranked models is below 100 in every area, so it sits in the centre of the net.

105110100CodingHaiku 5.5Reasoningslightly Haiku 5.5Mathematicsslightly Haiku 5.5Knowledgeslightly GPT-5.5Agentsslightly Haiku 5.5Generalslightly Haiku 5.5Financeslightly Haiku 5.5Legalslightly GPT-5.5HealthHaiku 5.5
CodingHaiku 5.5 ahead
Haiku 5.5106.2Rank 18
GPT-5.595.3Rank 42
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, GPT-5.5 87.8 to 102.8.

AreaHaiku 5.5GPT-5.5

The same values and verdicts as the bars below. In the top field the net starts at 100 points, the reference group average; values below sit as a hollow point in the centre. Not in the net because a model has no own value there or the data are too thin: Multimodal.

Haiku 5.5 is ahead in 2 of 10 areas, GPT-5.5 in none.

Haiku 5.5 ahead: 2Haiku 5.5 slightly ahead: 5too little data: 1GPT-5.5 slightly ahead: 2

Areas in the overall index
CodingHaiku 5.5 +11106.2 to 95.3
Knowledgeleaning GPT-5.5not certain · 2 tests each
Agentsleaning Haiku 5.5not certain · 4 and 7 tests
Reasoningleaning Haiku 5.5not certain · 4 and 3 tests
Generalleaning Haiku 5.5not certain · 5 and 2 tests
Mathematicsleaning Haiku 5.5not certain · 3 tests each
Multimodalonly GPT-5.5 has a score
Specialist fields
HealthHaiku 5.5 +6108.9 to 102.7
Legalleaning GPT-5.5not certain · 3 and 2 tests
Financeleaning Haiku 5.5not certain · 5 and 6 tests

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
ProductivityHaiku 5.5 +5101.8 to 96.6
Cybersecurityonly Haiku 5.5 has a score
Searchonly GPT-5.5 has a score
Educationonly Haiku 5.5 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.

Which model for which task?

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

Writing and debugging codeHaiku 5.5Coding 106.2 to 95.3
Maths and data analysisleaning Haiku 5.5Mathematics 107.1 to 103.2, Reasoning 105.2 to 99.2
Facts and researchleaning GPT-5.5Knowledge 85.5 to 104.3, Search without a score for Haiku 5.5
Agents and workflowsleaning Haiku 5.5Agents 106.1 to 98.8
Fast chat repliesHaiku 5.5236 to 79 tokens per second
Security analysisopenCybersecurity without a score for GPT-5.5
Many requests on a small budgetHaiku 5.5$0.20 to $11.25 per 1M tokens
Finance, legal and medical textsdepends on the partFinance 104.7 to 99.9, Legal 94.4 to 102.3, Health 108.9 to 102.7
Images, screenshots and PDFsopenMultimodal without a score for Haiku 5.5

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

Claude Haiku 5.5

Not tested yet

GPT-5.5

GPT-5.5: Pelican on a bicycle
A community classic for free-form SVG drawing.

Oct 1, 2026 · 26 s · $0.09

Test details
Run date
Oct 1, 2026
API provider
openrouter
Requested API model
openai/gpt-5.5
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
3,163 tokens
Cost of the attempt
$0.0950
Response time
25.9 s
API model reported in response
openai/gpt-5.5
Pinned endpoint
OpenAI | openai/gpt-5.5-20260423
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 (1)

  • Sep 7, 2026API request failedReasoning setting: high
SVG short test

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.

Claude Haiku 5.5

Unavailable in this round

GPT-5.5

Unavailable in this round

Claude Haiku 5.5 and GPT-5.5 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 91 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 Carbonhigh125.7
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 Solmax110.6
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
Claude Haiku 5.5max103.4
GPT-5.5xhigh100.9

Popularity compared

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

Claude Haiku 5.5 is more popular than GPT-5.5: 77 to 31 out of 100.

Over time

Weekly values from October 18, 2026 to November 5, 2026

Claude Haiku 5.5GPT-5.5

All data side by side

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

MetricClaude Haiku 5.5GPT-5.5
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.4100.9
RankRank 20 of 91Rank 24 of 91
Price per 1M tokens
Inputwhat you send$0.10above 100,000 tokens: $0.50$5above 272,000 tokens: $10
Outputwhat the model writes$0.50above 100,000 tokens: $2.50$30above 272,000 tokens: $45
Speed
Tokens per second23679
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87531Rank 452 of 875
Technical
Context windowhow much text the model reads at once1 M tokens≈ 1,500 A4 pages1.05 M tokens≈ 1,580 A4 pages
Knowledge cutoffJune 2026Dec 1, 2025
ReleasedOct 7, 2026Apr 23, 2026
AvailabilityActiveActive
Open weightsnono

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

Is there a better choice?

Successor of GPT-5.5GPT-5.6 Sol

Overall index 108.7, rank 14. $4 input and $20 output per 1M tokens.

Haiku 5.5 vs. GPT-5.6 Sol
Best model in the overall indexClaude Opus 5.5

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

Haiku 5.5 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: Claude Haiku 5.5B: GPT-5.5

Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%GPT-5.5: 45.2%Vals AIAs of 10/29/2026
EMBOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59%GPT-5.5: 64.5%Vals AIAs of 10/20/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%GPT-5.5: 51.8%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,424.29 eloGPT-5.5: 1,335.86 eloArtificial AnalysisAs of 11/06/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 43.8%GPT-5.5: 40.4%Vals AIAs of 11/05/2026
LMArena Text, Style ControlOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,425GPT-5.5: 1,477LMArenaAs of 10/28/2026
MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%GPT-5.5: 49.1%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%GPT-5.5: 86.9%Vals AIAs of 10/29/2026
ProgramBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%GPT-5.5: 0.5%Vals AIAs of 11/05/2026
Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.2%GPT-5.5: 60.9%Vals AIAs of 10/12/2026
Show 54 more benchmarks
SRE BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%GPT-5.5: 3.8%Vals AIAs of 11/05/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.9%GPT-5.5: 21.8%Vals AIAs of 11/05/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 90.4%GPT-5.5: 69.8%Vals AIAs of 11/05/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%GPT-5.5: 36.9%Vals AIAs of 10/29/2026
EMBComps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.9%GPT-5.5: 64.7%Vals AIAs of 10/20/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 49.6%GPT-5.5: 45.7%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,521.54 eloGPT-5.5: 1,359.24 eloArtificial AnalysisAs of 11/06/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 50%GPT-5.5: 53%Vals AIAs of 11/05/2026
LMArena Text, Style ControlOverall · higher is betterClaude Haiku 5.5: 1,425GPT-5.5: 1,482LMArenaAs of 10/28/2026
ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.5%GPT-5.5: 9.5%Vals AIAs of 11/05/2026
SRE BenchCapability Score · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 18.1%GPT-5.5: 17%Vals AIAs of 11/05/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 6.7%GPT-5.5: 10%Vals AIAs of 11/05/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%GPT-5.5: 70%Vals AIAs of 10/29/2026
EMBDataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.5%GPT-5.5: 81.2%Vals AIAs of 10/20/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.9%GPT-5.5: 39.6%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,130.36 eloGPT-5.5: 1,053.07 eloArtificial AnalysisAs of 11/06/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 88.7%GPT-5.5: 86.7%Vals AIAs of 11/05/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,435GPT-5.5: 1,485LMArenaAs of 10/28/2026
ProgramBenchFully Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%GPT-5.5: 0.5%Vals AIAs of 11/05/2026
SRE BenchFully Solved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%GPT-5.5: 3.8%Vals AIAs of 11/05/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%GPT-5.5: 54.9%Vals AIAs of 11/05/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.825 / 5GPT-5.5: 3.498 / 5Vals AIAs of 10/29/2026
EMBDCF · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 55.1%GPT-5.5: 56.7%Vals AIAs of 10/20/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 45.3%GPT-5.5: 43.7%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,282.5 eloGPT-5.5: 1,242.99 eloArtificial AnalysisAs of 11/06/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.2%GPT-5.5: 37.2%Vals AIAs of 11/05/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterClaude Haiku 5.5: 1,435GPT-5.5: 1,490LMArenaAs of 10/28/2026
ProgramBenchRaw Pass Rate · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 78.7%GPT-5.5: 70.8%Vals AIAs of 11/05/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.7%GPT-5.5: 26.7%Vals AIAs of 11/05/2026
EMBLBO · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.2%GPT-5.5: 53.2%Vals AIAs of 10/20/2026
Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 64.3%GPT-5.5: 58.9%Vals AIAs of 10/29/2026
Legal Research BenchBusiness & Commercial · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 87%GPT-5.5: 86.8%Vals AIAs of 11/05/2026
LMArena Text, Style ControlChinese · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,468GPT-5.5: 1,526LMArenaAs of 10/28/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 56.2%GPT-5.5: 68.2%Vals AIAs of 11/05/2026
EMBM&A · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 57.8%GPT-5.5: 66.8%Vals AIAs of 10/20/2026
Finance Agent (v2)Earnings Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 73.5%GPT-5.5: 73.2%Vals AIAs of 10/29/2026
Legal Research BenchCivil Litigation · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 40.7%GPT-5.5: 44.4%Vals AIAs of 11/05/2026
LMArena Text, Style ControlChinese · higher is betterClaude Haiku 5.5: 1,468GPT-5.5: 1,517LMArenaAs of 10/28/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 30.2%GPT-5.5: 27.9%Vals AIAs of 11/05/2026
EMBMisc · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 52.3%GPT-5.5: 64.6%Vals AIAs of 10/20/2026
Finance Agent (v2)Financial Modeling · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.3%GPT-5.5: 22.9%Vals AIAs of 10/29/2026
Legal Research BenchCivil Litigation · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 83%GPT-5.5: 87.6%Vals AIAs of 11/05/2026
LMArena Text, Style ControlCoding · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,489GPT-5.5: 1,510LMArenaAs of 10/28/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59.2%GPT-5.5: 59.2%Vals AIAs of 11/05/2026
EMBOperating · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 56.4%GPT-5.5: 64.5%Vals AIAs of 10/20/2026
Finance Agent (v2)General Qualitative Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 61.9%GPT-5.5: 65.6%Vals AIAs of 10/29/2026
Legal Research BenchConstitutional / Civil Rights · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.7%GPT-5.5: 28.9%Vals AIAs of 11/05/2026
LMArena Text, Style ControlCoding · higher is betterClaude Haiku 5.5: 1,489GPT-5.5: 1,519LMArenaAs of 10/28/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20%GPT-5.5: 10%Vals AIAs of 11/05/2026
EMBScratch · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 53.5%GPT-5.5: 66.8%Vals AIAs of 10/20/2026
Finance Agent (v2)General Quantitative Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 74.4%GPT-5.5: 73.7%Vals AIAs of 10/29/2026
Legal Research BenchConstitutional / Civil Rights · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 82.3%GPT-5.5: 83.7%Vals AIAs of 11/05/2026
LMArena Text, Style ControlCreative writing · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,361GPT-5.5: 1,448LMArenaAs of 10/28/2026
Tax Agent BenchForms & Filings · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 61.8%GPT-5.5: 59.9%Vals AIAs of 11/05/2026

More comparisons

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The most popular comparisons

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  4. 4Claude Haiku 5.5 vs. DeepSeek-V4-Flash
  5. 5Claude Haiku 5.5 vs. DeepSeek-V4.1-Flash
  6. 6Claude Opus 5.5 vs. Claude Haiku 5.5
  7. 7Claude Haiku 5.5 vs. GLM-5.3
  8. 8Claude Haiku 5.5 vs. Gemini 3.5 Flash-Lite
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  1. 10Claude Haiku 5.5 vs. Claude Sonnet 4.5
  2. 11Claude Opus 5.5 vs. GPT-5.5
  3. 12Claude Haiku 5.5 vs. Claude Sonnet 5
  4. 13Claude Haiku 5.5 vs. Claude Opus 5
  5. 14Claude Haiku 5.5 vs. GPT-6 Astra
  6. 15Claude Haiku 5.5 vs. Gemini 3.5 Flash
  7. 16Claude Haiku 5.5 vs. Claude Opus 4.8
  8. 17Claude Haiku 5.5 vs. Gemini 4 Argon
  9. 18Claude Haiku 5.5 vs. Grok 4.7
  10. 19Claude Haiku 5.5 vs. GPT-5.6 Luna
  11. 20Claude Haiku 5.5 vs. Qwen 3.8 Max 0902
  12. 21Claude Haiku 5.5 vs. Muse Spark 1.3
  13. 22Claude Haiku 5.5 vs. Claude Sonnet 4.6
  14. 23Claude Haiku 5.5 vs. Gemini 3.7 Flash
  15. 24Claude Haiku 5.5 vs. Mistral Large 4
  16. 25Claude Haiku 5.5 vs. GPT-6.1 Sol
  17. 26GPT-6 Luna vs. GPT-5.5
  18. 27Claude Haiku 5.5 vs. Gemini 3.1 Pro Preview
  19. 28Claude Haiku 5.5 vs. GLM-5.3-Flash
  20. 29Claude Haiku 5.5 vs. DeepSeek-V4-Pro
  21. 30Claude Haiku 5.5 vs. GPT-5.6 Sol
  22. 31Claude Haiku 5.5 vs. Gemini 3.6 Flash
  23. 32Claude Haiku 5.5 vs. Claude Opus 4.6
  24. 33Claude Haiku 5.5 vs. Kimi K2.6
  25. 34Claude Haiku 5.5 vs. Claude Opus 4.7
  26. 35Claude Haiku 5.5 vs. Mistral Large 3
  27. 36GPT-6 Sol vs. GPT-5.5
  28. 37GPT-5.5 vs. Gemini 3.8 Flash
  29. 38GPT-6.1 Sol vs. GPT-5.5
  30. 39GPT-5.6 Luna vs. GPT-5.5
  31. 40GPT-5.5 vs. GLM-5.3-Flash
  32. 41Claude Opus 4.8 vs. GPT-5.5
  33. 42GPT-5.5 vs. DeepSeek-V4.1-Flash
  34. 43Claude Haiku 5.5 vs. GPT-6.1 Terra