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AnthropicLLM matchup

Claude Haiku 5.5vs.Claude Opus 4.8

Is the higher price worth it?

Claude Haiku 5.5 and Claude Opus 4.8 perform about equally well, but Claude Opus 4.8 costs 50 times as much.

level
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

99.0

Claude Opus 4.8

Rank 30

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

82

Claude Opus 4.8

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$10

Claude Opus 4.8

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

37

Claude Opus 4.8

Rank 325 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

GeneralCodingReasoning (not certain)Health (not certain)Agents (not certain)

Choose Claude Opus 4.8 for

Legal (not certain)

Where is the difference?

Strengths at a glance

Haiku 5.5Opus 4.8

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 5.5Agentsslightly Haiku 5.5GeneralHaiku 5.5FinancelevelLegalslightly Opus 4.8Healthslightly Haiku 5.5
CodingHaiku 5.5 ahead
Haiku 5.5106.2Rank 18
Opus 4.8100.8Rank 24
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, Opus 4.8 97.3 to 104.2.

AreaHaiku 5.5Opus 4.8

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: Mathematics, Knowledge, Multimodal.

Haiku 5.5 is ahead in 2 of 10 areas, Opus 4.8 in none.

Haiku 5.5 ahead: 2Haiku 5.5 slightly ahead: 3level: 1too little data: 3Opus 4.8 slightly ahead: 1

Areas in the overall index
GeneralHaiku 5.5 +15106.4 to 91.0
CodingHaiku 5.5 +5106.2 to 100.8
Reasoningleaning Haiku 5.5not certain · 4 and 2 tests
Agentsleaning Haiku 5.5not certain · 4 and 3 tests
Knowledgetoo little data85.5 to 100.0
Mathematicsonly Haiku 5.5 has a score
Multimodalonly Opus 4.8 has a score
Specialist fields
Legalleaning Opus 4.8not certain · 3 and 2 tests
Healthleaning Haiku 5.5not certain · 2 tests each
Financelevel104.7 to 103.2

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
Productivitytoo little data101.8 to 104.1
Cybersecurityonly Haiku 5.5 has a score
Searchonly Opus 4.8 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 100.8
Maths and data analysisleaning Haiku 5.5Mathematics without a score for Opus 4.8, Reasoning 105.2 to 89.8
Facts and researchopenKnowledge 85.5 to 100.0 (too little data), Search without a score for Haiku 5.5
Agents and workflowsleaning Haiku 5.5Agents 106.1 to 102.9
Fast chat repliesHaiku 5.5236 to 82 tokens per second
Security analysisopenCybersecurity without a score for Opus 4.8
Many requests on a small budgetHaiku 5.5$0.20 to $10 per 1M tokens
Finance, legal and medical textsdepends on the partFinance 104.7 to 103.2, Legal 94.4 to 100.0, Health 108.9 to 104.0
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 4.8

Claude Opus 4.8: Pelican on a bicycle
A community classic for free-form SVG drawing.

Oct 1, 2026 · 18 s · $0.04

Test details
Run date
Oct 1, 2026
API provider
openrouter
Requested API model
anthropic/claude-opus-4.8
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
1,659 tokens
Cost of the attempt
$0.0416
Response time
18 s
API model reported in response
anthropic/claude-opus-4.8
Pinned endpoint
Anthropic | anthropic/claude-4.8-opus-20260528
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.

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 4.8

Unavailable in this round

Claude Haiku 5.5 and Claude Opus 4.8 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
Claude Haiku 5.5max103.4
Claude Opus 4.8max99.0

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 4.8: 77 to 37 out of 100.

Over time

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

Claude Haiku 5.5Claude Opus 4.8

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 4.8
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.499.0
RankRank 20 of 91Rank 30 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 second23682
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87537Rank 325 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 2026January 2026
ReleasedOct 7, 2026May 2026
AvailabilityActiveLegacy
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 4.8Claude Opus 5

Overall index 117.2, rank 9. $5 input and $25 output per 1M tokens.

Haiku 5.5 vs. Claude Opus 5
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: Claude Opus 4.8

AA-AnalystAgentOverall · higher is betterClaude Haiku 5.5: 53.8%Claude Opus 4.8: 45.0%Artificial AnalysisAs of 11/06/2026
Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%Claude Opus 4.8: 47.3%Vals AIAs of 10/29/2026
EMBOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59%Claude Opus 4.8: 69.4%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 4.8: 53.9%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,630.83 eloClaude Opus 4.8: 1,461.75 eloArtificial AnalysisAs of 11/06/2026
Legal Research BenchOverall · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 43.8%Claude Opus 4.8: 43.8%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,589Claude Opus 4.8: 1,536LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,425Claude Opus 4.8: 1,474LMArenaAs of 10/28/2026
MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%Claude Opus 4.8: 53.2%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%Claude Opus 4.8: 85.8%Vals AIAs of 10/29/2026
Show 54 more benchmarks
ProgramBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Opus 4.8: 1%Vals AIAs of 11/05/2026
Public Benefits Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.2%Claude Opus 4.8: 68.1%Vals AIAs of 10/12/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.9%Claude Opus 4.8: 30%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.4%Claude Opus 4.8: 23.2%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 10%Claude Opus 4.8: 4.3%Vals AIAs of 11/05/2026
Vibe Code Bench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 90.4%Claude Opus 4.8: 82.7%Vals AIAs of 11/05/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%Claude Opus 4.8: 40.1%Vals AIAs of 10/29/2026
EMBComps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.9%Claude Opus 4.8: 72.8%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 4.8: 48.4%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 4.8: 43.9%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterClaude Haiku 5.5: 1,589Claude Opus 4.8: 1,556LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterClaude Haiku 5.5: 1,425Claude Opus 4.8: 1,482LMArenaAs of 10/28/2026
ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.5%Claude Opus 4.8: 15.5%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 4.8: 13.1%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20%Claude Opus 4.8: 26.7%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceEarth Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 0%Claude Opus 4.8: 0%Vals AIAs of 11/05/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%Claude Opus 4.8: 68.6%Vals AIAs of 10/29/2026
EMBDataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.5%Claude Opus 4.8: 85.9%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 4.8: 43.5%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 4.8: 87.4%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevHTML development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,568Claude Opus 4.8: 1,524LMArenaAs of 10/28/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,435Claude Opus 4.8: 1,486LMArenaAs of 10/28/2026
ProgramBenchFully Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Opus 4.8: 1%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 4.8: 58.7%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 25%Claude Opus 4.8: 0%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceEngineering Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 0%Claude Opus 4.8: 0%Vals AIAs of 11/05/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.825 / 5Claude Opus 4.8: 4.7 / 5Vals AIAs of 10/29/2026
EMBDCF · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 55.1%Claude Opus 4.8: 66.3%Vals AIAs of 10/20/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 45.3%Claude Opus 4.8: 44.9%Vals AIAs of 10/29/2026
Legal Research BenchBusiness & Commercial · All-pass · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.2%Claude Opus 4.8: 41.9%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevHTML development · higher is betterClaude Haiku 5.5: 1,568Claude Opus 4.8: 1,543LMArenaAs of 10/28/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterClaude Haiku 5.5: 1,435Claude Opus 4.8: 1,489LMArenaAs of 10/28/2026
ProgramBenchRaw Pass Rate · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 78.7%Claude Opus 4.8: 71.9%Vals AIAs of 11/05/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.7%Claude Opus 4.8: 46.5%Vals AIAs of 11/05/2026
Terminal-Bench 4.0ML · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.6%Claude Opus 4.8: 27.3%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceLife Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 15.8%Claude Opus 4.8: 0%Vals AIAs of 11/05/2026
EMBLBO · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.2%Claude Opus 4.8: 54.4%Vals AIAs of 10/20/2026
Finance Agent (v2)Disclosure Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 64.3%Claude Opus 4.8: 65.7%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%Claude Opus 4.8: 86.1%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevReact development · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,608Claude Opus 4.8: 1,537LMArenaAs of 10/28/2026
LMArena Text, Style ControlChinese · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 1,468Claude Opus 4.8: 1,525LMArenaAs of 10/28/2026
Tax Agent BenchCurrent & Temporal Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 56.2%Claude Opus 4.8: 76%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Operations · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 18.5%Claude Opus 4.8: 11.1%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceMathematical Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 11.8%Claude Opus 4.8: 5.9%Vals AIAs of 11/05/2026
EMBM&A · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 57.8%Claude Opus 4.8: 80.1%Vals AIAs of 10/20/2026
Finance Agent (v2)Earnings Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 73.5%Claude Opus 4.8: 72.1%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%Claude Opus 4.8: 51.9%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevReact development · higher is betterClaude Haiku 5.5: 1,608Claude Opus 4.8: 1,557LMArenaAs of 10/28/2026
LMArena Text, Style ControlChinese · higher is betterClaude Haiku 5.5: 1,468Claude Opus 4.8: 1,526LMArenaAs of 10/28/2026
Tax Agent BenchFact-Pattern Analysis · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 30.2%Claude Opus 4.8: 25.6%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Science · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 21.4%Claude Opus 4.8: 38.1%Vals AIAs of 11/05/2026
Terminal-Bench-SciencePhysical Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 11.8%Claude Opus 4.8: 11.8%Vals AIAs of 11/05/2026
EMBMisc · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 52.3%Claude Opus 4.8: 59.4%Vals AIAs of 10/20/2026
Finance Agent (v2)Financial Modeling · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.3%Claude Opus 4.8: 23.3%Vals AIAs of 10/29/2026

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  1. 10Claude Haiku 5.5 vs. Claude Sonnet 4.5
  2. 11Claude Opus 5.5 vs. Claude Opus 4.8
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  4. 13Claude Opus 4.8 vs. GPT-6 Sol
  5. 14Claude Opus 4.8 vs. GPT-6 Luna
  6. 15Claude Haiku 5.5 vs. Claude Opus 5
  7. 16Claude Haiku 5.5 vs. GPT-6 Astra
  8. 17Claude Haiku 5.5 vs. Gemini 3.5 Flash
  9. 18Claude Opus 4.8 vs. GPT-6 Astra
  10. 19Claude Opus 4.8 vs. GPT-6.1 Sol
  11. 20Claude Haiku 5.5 vs. Gemini 4 Argon
  12. 21Claude Haiku 5.5 vs. Grok 4.7
  13. 22Claude Opus 4.8 vs. GLM-5.3-Flash
  14. 23Claude Haiku 5.5 vs. GPT-5.6 Luna
  15. 24Claude Haiku 5.5 vs. Qwen 3.8 Max 0902
  16. 25Claude Haiku 5.5 vs. Muse Spark 1.3
  17. 26Claude Haiku 5.5 vs. Claude Sonnet 4.6
  18. 27Claude Haiku 5.5 vs. Gemini 3.7 Flash
  19. 28Claude Sonnet 5.5 vs. Claude Opus 4.8
  20. 29Claude Haiku 5.5 vs. Mistral Large 4
  21. 30Claude Opus 4.8 vs. Grok 4.7
  22. 31Claude Haiku 5.5 vs. GPT-6.1 Sol
  23. 32Claude Haiku 5.5 vs. Gemini 3.1 Pro Preview
  24. 33Claude Opus 4.8 vs. Qwen 3.8 Max 0902
  25. 34Claude Haiku 5.5 vs. GLM-5.3-Flash
  26. 35Claude Opus 4.8 vs. DeepSeek-V4.1-Flash
  27. 36Claude Haiku 5.5 vs. DeepSeek-V4-Pro
  28. 37Claude Haiku 5.5 vs. GPT-5.6 Sol
  29. 38Claude Haiku 5.5 vs. Gemini 3.6 Flash
  30. 39Claude Haiku 5.5 vs. Claude Opus 4.6
  31. 40Claude Haiku 5.5 vs. Kimi K2.6
  32. 41Claude Opus 4.8 vs. GLM-5.3
  33. 42Claude Opus 4.8 vs. Kimi K3
  34. 43Claude Haiku 5.5 vs. Claude Opus 4.7
  35. 44Claude Haiku 5.5 vs. Mistral Large 3
  36. 45Claude Haiku 5.5 vs. GPT-5.5
  37. 46Claude Opus 4.8 vs. DeepSeek-V4-Flash
  38. 47Claude Fable 5.1 vs. Claude Opus 4.8
  39. 48Claude Opus 4.8 vs. Mistral Large 4
  40. 49Claude Opus 4.8 vs. Claude Opus 4.6
  41. 50Claude Opus 4.8 vs. GPT-5.5
  42. 51Claude Haiku 5.5 vs. GPT-6.1 Terra
  43. 52Claude Opus 4.8 vs. Muse Wonder Full