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AnthropicLLM matchup

Claude Haiku 5.5vs.Claude Opus 5

Is the higher price worth it?

Claude Opus 5 performs better than Claude Haiku 5.5, but costs 50 times as much.

Opus 5 ahead
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

117.2

Claude Opus 5

Rank 9

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

66

Claude Opus 5

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$10

Claude Opus 5

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

62

Claude Opus 5

Rank 29 of 875

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

Choose Claude Haiku 5.5 for

No clear advantage

Choose Claude Opus 5 for

KnowledgeProductivityLegalHealthFinanceCodingGeneralMathematicsAgentsReasoning (not certain)

Where is the difference?

Strengths at a glance

Haiku 5.5Opus 5

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

110120130100CodingOpus 5Reasoningslightly Opus 5MathematicsOpus 5KnowledgeOpus 5AgentsOpus 5GeneralOpus 5FinanceOpus 5LegalOpus 5HealthOpus 5
CodingOpus 5 ahead
Haiku 5.5106.2Rank 18
Opus 5118.0Rank 8
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, Opus 5 114.3 to 121.6.

AreaHaiku 5.5Opus 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.

Opus 5 is ahead in 8 of 10 areas, Haiku 5.5 in none.

too little data: 1Opus 5 slightly ahead: 1Opus 5 ahead: 8

Areas in the overall index
KnowledgeOpus 5 +3485.5 to 119.7
CodingOpus 5 +12106.2 to 118.0
GeneralOpus 5 +11106.4 to 117.0
MathematicsOpus 5 +7107.1 to 114.1
AgentsOpus 5 +6106.1 to 112.6
Reasoningleaning Opus 5not certain · 4 and 5 tests
Multimodalonly Opus 5 has a score
Specialist fields
LegalOpus 5 +2194.4 to 115.9
HealthOpus 5 +17108.9 to 126.0
FinanceOpus 5 +13104.7 to 118.0

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
ProductivityOpus 5 +26101.8 to 127.5
Cybersecuritytoo little data108.6 to 115.8
Searchonly Opus 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.

Claude Haiku 5.5 vs. Claude Opus 5 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.

maxOpus 5 ahead
Haiku 5.5 103.4 vs. Opus 5 117.2 · Gap 9.2 · Test series 11
Overall index (max vs. max)Opus 5 ahead
Haiku 5.5 103.4 vs. Opus 5 117.2

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.

Writing and debugging codeOpus 5Coding 106.2 to 118.0
Maths and data analysisOpus 5Mathematics 107.1 to 114.1, Reasoning 105.2 to 108.5
Facts and researchOpus 5Knowledge 85.5 to 119.7, Search without a score for Haiku 5.5
Agents and workflowsOpus 5Agents 106.1 to 112.6
Fast chat repliesHaiku 5.5236 to 66 tokens per second
Security analysisopenCybersecurity 108.6 to 115.8 (too little data)
Many requests on a small budgetHaiku 5.5$0.20 to $10 per 1M tokens
Finance, legal and medical textsOpus 5Finance 104.7 to 118.0, Legal 94.4 to 115.9, Health 108.9 to 126.0
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

Claude Opus 5

Claude Opus 5: Pelican on a bicycle
A community classic for free-form SVG drawing.

Oct 1, 2026 · 63 s · $0.14

Test details
Run date
Oct 1, 2026
API provider
openrouter
Requested API model
anthropic/claude-opus-5
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
5,423 tokens
Cost of the attempt
$0.1357
Response time
63 s
API model reported in response
anthropic/claude-opus-5
Pinned endpoint
Anthropic | anthropic/claude-opus-5-20260723
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

Claude Opus 5

Unavailable in this round

Claude Haiku 5.5 and Claude Opus 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

4 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
GPT-6.1 Terramax105.2
Claude Haiku 5.5max103.4

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 Claude Opus 5: 77 to 62 out of 100.

Over time

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

Claude Haiku 5.5Claude Opus 5

All data side by side

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

MetricClaude Haiku 5.5Claude Opus 5
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.4117.2
RankRank 20 of 91Rank 9 of 91
Price per 1M tokens
Inputwhat you send$0.10above 100,000 tokens: $0.50$5
Outputwhat the model writes$0.50above 100,000 tokens: $2.50$25
Speed
Tokens per second23666
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87562Rank 29 of 875
Technical
Context windowhow much text the model reads at once1 M tokens≈ 1,500 A4 pages1 M tokens≈ 1,500 A4 pages
Knowledge cutoffJune 2026May 2026
ReleasedOct 7, 2026Jul 24, 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 Opus 5Claude 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: Claude Opus 5

AA-AnalystAgentOverall · higher is betterClaude Haiku 5.5: 53.8%Claude Opus 5: 53.8%Artificial AnalysisAs of 11/06/2026
AA-BriefcaseOverall · higher is betterClaude Haiku 5.5: 1,574.12 eloClaude Opus 5: 1,654.66 eloArtificial AnalysisAs of 11/06/2026
AA-OmniscienceOverall · higher is betterClaude Haiku 5.5: 12.3 pointsClaude Opus 5: 37.633 pointsArtificial AnalysisAs of 11/06/2026
AA-Omniscience AccuracyOverall · higher is betterClaude Haiku 5.5: 34.7%Claude Opus 5: 60.9%Artificial AnalysisAs of 11/06/2026
AA-Omniscience Hallucination RateOverall · lower is betterClaude Haiku 5.5: 34.2%Claude Opus 5: 59.4%Artificial AnalysisAs of 11/06/2026
AutomationBench-AAOverall · higher is betterClaude Haiku 5.5: 35.4%Claude Opus 5: 56.6%Artificial AnalysisAs of 11/06/2026
BioMysteryBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70.4%Claude Opus 5: 79.3%Vals AIAs of 11/05/2026
Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%Claude Opus 5: 57.5%Vals AIAs of 10/29/2026
CritPt v2 (Hard Subset)Overall · higher is betterClaude Haiku 5.5: 43.5%Claude Opus 5: 50.0%Artificial AnalysisAs of 11/06/2026
CyberBench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 75.5%Claude Opus 5: 65.4%Vals AIAs of 11/05/2026
Show 54 more benchmarks
EMBOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59%Claude Opus 5: 73.6%Vals AIAs of 10/20/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%Claude Opus 5: 58.6%Vals AIAs of 10/29/2026
FrontierCodeOverall · higher is betterClaude Haiku 5.5: 34.9%Claude Opus 5: 31.2%Artificial AnalysisAs of 11/06/2026
GDP.pdfOverall · higher is betterClaude Haiku 5.5: 20.8%Claude Opus 5: 21.6%Artificial AnalysisAs of 11/06/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,424.29 eloClaude Opus 5: 1,603.96 eloArtificial AnalysisAs of 11/06/2026
HLE-DiamondOverall · higher is betterClaude Haiku 5.5: 29.6%Claude Opus 5: 44.8%Artificial AnalysisAs of 11/06/2026
IOIOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 47.3%Claude Opus 5: 84.3%Vals AIAs of 10/29/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 43.8%Claude Opus 5: 55.3%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterClaude Haiku 5.5: 1,589Claude Opus 5: 1,658LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterClaude Haiku 5.5: 1,425Claude Opus 5: 1,492LMArenaAs of 10/28/2026
MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%Claude Opus 5: 63.6%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%Claude Opus 5: 91%Vals AIAs of 10/29/2026
MysteryMechanismOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 35.1%Claude Opus 5: 37.4%Vals AIAs of 10/29/2026
ProgramBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Opus 5: 3%Vals AIAs of 11/05/2026
ProofBench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89%Claude Opus 5: 99%Vals AIAs of 10/29/2026
Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.2%Claude Opus 5: 76.9%Vals AIAs of 10/12/2026
SRE BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%Claude Opus 5: 12.2%Vals AIAs of 11/05/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.9%Claude Opus 5: 45.5%Vals AIAs of 11/05/2026
Terminal-BenchOverall · higher is betterClaude Haiku 5.5: 32.8%Claude Opus 5: 49.0%Artificial AnalysisAs of 11/06/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.4%Claude Opus 5: 53.5%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 10%Claude Opus 5: 27.1%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceOverall · higher is betterClaude Haiku 5.5: 20.0%Claude Opus 5: 28.6%Artificial AnalysisAs of 11/06/2026
Vals Science IndexOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 38.5%Claude Opus 5: 47.9%Vals AIAs of 10/25/2026
Vibe Code Bench 1-100Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20.4%Claude Opus 5: 28.5%Vals AIAs of 10/29/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 90.4%Claude Opus 5: 88.4%Vals AIAs of 11/05/2026
BioMysteryBenchHard · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.4%Claude Opus 5: 43.1%Vals AIAs of 11/05/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%Claude Opus 5: 53.3%Vals AIAs of 10/29/2026
CyberBench v1.1Patch · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.3%Claude Opus 5: 85.7%Vals AIAs of 11/05/2026
EMBComps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.9%Claude Opus 5: 75.2%Vals AIAs of 10/20/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 49.6%Claude Opus 5: 54.6%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,521.54 eloClaude Opus 5: 1,695.66 eloArtificial AnalysisAs of 11/06/2026
IOIIOI 2024 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 67.7%Claude Opus 5: 100%Vals AIAs of 10/29/2026
Legal Research BenchAdministrative / Regulatory · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 50%Claude Opus 5: 65.2%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,589Claude Opus 5: 1,691LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,425Claude Opus 5: 1,491LMArenaAs of 10/28/2026
ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.5%Claude Opus 5: 41.5%Vals AIAs of 11/05/2026
SRE BenchCapability Score · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 18.1%Claude Opus 5: 31.1%Vals AIAs of 11/05/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 6.7%Claude Opus 5: 23.3%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20%Claude Opus 5: 33.3%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceEarth Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 0%Claude Opus 5: 12.5%Vals AIAs of 11/05/2026
Vals Science IndexBioMysteryBench · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70.4%Claude Opus 5: 79.3%Vals AIAs of 10/25/2026
BioMysteryBenchHuman-solvable · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 79.9%Claude Opus 5: 87.7%Vals AIAs of 11/05/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%Claude Opus 5: 70%Vals AIAs of 10/29/2026
CyberBench v1.1PoC · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 61.7%Claude Opus 5: 45%Vals AIAs of 11/05/2026
EMBDataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.5%Claude Opus 5: 87.7%Vals AIAs of 10/20/2026
Finance Agent (v2)All-Pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.9%Claude Opus 5: 47.7%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,130.36 eloClaude Opus 5: 1,310.56 eloArtificial AnalysisAs of 11/06/2026
IOIIOI 2025 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.3%Claude Opus 5: 87.2%Vals AIAs of 10/29/2026
Legal Research BenchAdministrative / Regulatory · Weighted partial credit · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 88.7%Claude Opus 5: 92.7%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevHTML development · higher is betterClaude Haiku 5.5: 1,568Claude Opus 5: 1,649LMArenaAs of 10/28/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterClaude Haiku 5.5: 1,435Claude Opus 5: 1,486LMArenaAs of 10/28/2026
ProgramBenchFully Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Opus 5: 3%Vals AIAs of 11/05/2026
SRE BenchFully Solved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%Claude Opus 5: 12.2%Vals AIAs of 11/05/2026
Tax Agent BenchControversy & Precedence Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%Claude Opus 5: 70%Vals AIAs of 11/05/2026

More comparisons

Compare Claude Haiku 5.5 and Claude Opus 5 with the models people compare them with most often.

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  6. 6Claude Opus 5.5 vs. Claude Haiku 5.5
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  4. 13Claude Opus 5 vs. DeepSeek-V4-Pro
  5. 14Claude Opus 5 vs. GLM-5.3-Flash
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  9. 18Claude Haiku 5.5 vs. GPT-6 Astra
  10. 19Claude Haiku 5.5 vs. Gemini 3.5 Flash
  11. 20Claude Opus 5 vs. Kimi K3
  12. 21Claude Haiku 5.5 vs. Claude Opus 4.8
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  14. 23Claude Haiku 5.5 vs. Grok 4.7
  15. 24Claude Haiku 5.5 vs. GPT-5.6 Luna
  16. 25Claude Haiku 5.5 vs. Qwen 3.8 Max 0902
  17. 26Claude Opus 5 vs. Grok 4.6
  18. 27Claude Haiku 5.5 vs. Muse Spark 1.3
  19. 28Claude Haiku 5.5 vs. Claude Sonnet 4.6
  20. 29Claude Haiku 5.5 vs. Gemini 3.7 Flash
  21. 30Claude Haiku 5.5 vs. Mistral Large 4
  22. 31Claude Opus 5 vs. Muse Spark 1.3
  23. 32Claude Haiku 5.5 vs. GPT-6.1 Sol
  24. 33Claude Opus 5 vs. GLM-5.3
  25. 34Claude Haiku 5.5 vs. Gemini 3.1 Pro Preview
  26. 35Claude Haiku 5.5 vs. GLM-5.3-Flash
  27. 36Claude Haiku 5.5 vs. DeepSeek-V4-Pro
  28. 37Claude Opus 5 vs. Mistral Large 4
  29. 38Claude Opus 5 vs. GPT-6 Sol
  30. 39Claude Haiku 5.5 vs. GPT-5.6 Sol
  31. 40Claude Haiku 5.5 vs. Gemini 3.6 Flash
  32. 41Claude Opus 5 vs. Grok 4.7
  33. 42Claude Opus 5 vs. GPT-5.6 Terra
  34. 43Claude Haiku 5.5 vs. Claude Opus 4.6
  35. 44Claude Haiku 5.5 vs. Kimi K2.6
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  37. 46Claude Opus 5 vs. GPT-6.1 Sol
  38. 47Claude Opus 5 vs. Claude Sonnet 4.5
  39. 48Claude Haiku 5.5 vs. Claude Opus 4.7
  40. 49Claude Haiku 5.5 vs. Mistral Large 3
  41. 50Claude Haiku 5.5 vs. GPT-5.5
  42. 51Claude Opus 5 vs. Muse Wonder Full
  43. 52Claude Haiku 5.5 vs. GPT-6.1 Terra
  44. 53Claude Opus 5 vs. Gemini 4 Carbon
  45. 54Claude Opus 5 vs. Kimi K3.1 Pro