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AnthropicLLM matchup

Claude Haiku 5.5vs.Claude Sonnet 5

Is the higher price worth it?

Claude Haiku 5.5 performs better than Claude Sonnet 5 and is cheaper: Claude Sonnet 5 costs 20 times as much.

Haiku 5.5 ahead
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

92.1

Claude Sonnet 5

Rank 40

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

103

Claude Sonnet 5

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$4

Claude Sonnet 5

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

63

Claude Sonnet 5

Rank 24 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

HealthGeneralCybersecurityReasoningMathematicsCodingAgentsFinance (not certain)

Choose Claude Sonnet 5 for

No clear advantage

Where is the difference?

Strengths at a glance

Haiku 5.5Sonnet 5

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

105110100CodingHaiku 5.5ReasoningHaiku 5.5MathematicsHaiku 5.5KnowledgelevelAgentsHaiku 5.5GeneralHaiku 5.5Financeslightly Haiku 5.5LegallevelHealthHaiku 5.5
CodingHaiku 5.5 ahead
Haiku 5.5106.2Rank 18
Sonnet 593.6Rank 44
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, Sonnet 5 89.7 to 97.6.

AreaHaiku 5.5Sonnet 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 6 of 10 areas, Sonnet 5 in none.

Haiku 5.5 ahead: 6Haiku 5.5 slightly ahead: 1level: 2too little data: 1

Areas in the overall index
GeneralHaiku 5.5 +18106.4 to 88.4
ReasoningHaiku 5.5 +15105.2 to 90.4
MathematicsHaiku 5.5 +14107.1 to 93.0
CodingHaiku 5.5 +13106.2 to 93.6
AgentsHaiku 5.5 +12106.1 to 94.5
Knowledgelevel85.5 to 86.0
Multimodalonly Sonnet 5 has a score
Specialist fields
HealthHaiku 5.5 +18108.9 to 90.7
Financeleaning Haiku 5.5not certain · 5 and 6 tests
Legallevel94.4 to 95.9

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 3 more areas that do not count toward the overall index
CybersecurityHaiku 5.5 +17108.6 to 92.1
Productivitytoo little data101.8 to 97.0
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 93.6
Maths and data analysisHaiku 5.5Mathematics 107.1 to 93.0, Reasoning 105.2 to 90.4
Facts and researchlevelKnowledge 85.5 to 86.0
Agents and workflowsHaiku 5.5Agents 106.1 to 94.5
Fast chat repliesHaiku 5.5236 to 103 tokens per second
Security analysisHaiku 5.5Cybersecurity 108.6 to 92.1
Many requests on a small budgetHaiku 5.5$0.20 to $4 per 1M tokens
Finance, legal and medical textsHaiku 5.5Finance 104.7 to 100.5, Legal 94.4 to 95.9, Health 108.9 to 90.7
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

Claude Sonnet 5

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

Sep 7, 2026 · 48 s · $0.03

Test details
Run date
Sep 7, 2026
API provider
openrouter
Requested API model
anthropic/claude-sonnet-5
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
3,394 tokens
Cost of the attempt
$0.0340
Response time
47.9 s
API model reported in response
anthropic/claude-sonnet-5
Pinned endpoint
Anthropic | anthropic/claude-sonnet-5-20260630
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 Sonnet 5

Unavailable in this round

Claude Haiku 5.5 and Claude Sonnet 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
Claude Haiku 5.5max103.4
Claude Sonnet 5max92.1

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 Sonnet 5: 77 to 63 out of 100.

Over time

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

Claude Haiku 5.5Claude Sonnet 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 Sonnet 5
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.492.1
RankRank 20 of 91Rank 40 of 91
Price per 1M tokens
Inputwhat you send$0.10above 100,000 tokens: $0.50$2
Outputwhat the model writes$0.50above 100,000 tokens: $2.50$10
Speed
Tokens per second236103
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87563Rank 24 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, 2026Jun 30, 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 Sonnet 5Claude Sonnet 5.5

Overall index 122.8, rank 4. $2 input and $10 output per 1M tokens.

Haiku 5.5 vs. Claude Sonnet 5.5
Cheaper than Haiku 5.5MiMo V2.6 Flash

Overall index 98.3, rank 31. $0.14 input and $0.28 output per 1M tokens.

View profile
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 Sonnet 5

AA-AnalystAgentOverall · higher is betterClaude Haiku 5.5: 53.8%Claude Sonnet 5: 46.3%Artificial AnalysisAs of 11/06/2026
Code MigrationOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 44.6%Claude Sonnet 5: 44.4%Vals AIAs of 10/29/2026
CyberBench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 75.5%Claude Sonnet 5: 61.9%Vals AIAs of 11/05/2026
EMBOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 59%Claude Sonnet 5: 66.3%Vals AIAs of 10/20/2026
Finance Agent (v2)Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 54.1%Claude Sonnet 5: 53.9%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,424.29 eloClaude Sonnet 5: 1,262.64 eloArtificial AnalysisAs of 11/06/2026
IOIOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 47.3%Claude Sonnet 5: 45%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 Sonnet 5: 41.8%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevOverall · higher is betterClaude Haiku 5.5: 1,589Claude Sonnet 5: 1,540LMArenaAs of 10/28/2026
LMArena Text, Style ControlOverall · higher is betterClaude Haiku 5.5: 1,425Claude Sonnet 5: 1,462LMArenaAs of 10/28/2026
Show 54 more benchmarks
MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%Claude Sonnet 5: 47.5%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%Claude Sonnet 5: 76.1%Vals AIAs of 10/29/2026
ProgramBenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Sonnet 5: 0%Vals AIAs of 11/05/2026
ProofBench v1.1Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89%Claude Sonnet 5: 77%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 Sonnet 5: 66%Vals AIAs of 10/12/2026
SRE BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%Claude Sonnet 5: 0.4%Vals AIAs of 11/05/2026
Tax Agent BenchOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.9%Claude Sonnet 5: 29.4%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.4%Claude Sonnet 5: 10.6%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 10%Claude Sonnet 5: 5.7%Vals AIAs of 11/05/2026
Vibe Code Bench 1-100Overall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20.4%Claude Sonnet 5: 13.8%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 Sonnet 5: 81.3%Vals AIAs of 11/05/2026
Code MigrationCLI · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 36.1%Claude Sonnet 5: 36.3%Vals AIAs of 10/29/2026
CyberBench v1.1Patch · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.3%Claude Sonnet 5: 82.1%Vals AIAs of 11/05/2026
EMBComps · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 77.9%Claude Sonnet 5: 69.4%Vals AIAs of 10/20/2026
Finance Agent (v2)Adjustments · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 49.6%Claude Sonnet 5: 48.7%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,521.54 eloClaude Sonnet 5: 1,366.08 eloArtificial AnalysisAs of 11/06/2026
IOIIOI 2024 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 67.7%Claude Sonnet 5: 50.5%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 Sonnet 5: 54.5%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevHTML development · higher is betterClaude Haiku 5.5: 1,568Claude Sonnet 5: 1,527LMArenaAs of 10/28/2026
LMArena Text, Style ControlBusiness, management and finance · higher is betterClaude Haiku 5.5: 1,435Claude Sonnet 5: 1,466LMArenaAs of 10/28/2026
ProgramBenchAlmost Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 29.5%Claude Sonnet 5: 13.5%Vals AIAs of 11/05/2026
SRE BenchCapability Score · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 18.1%Claude Sonnet 5: 7.7%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 Sonnet 5: 10%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Hardware · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 20%Claude Sonnet 5: 0%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceEarth Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 0%Claude Sonnet 5: 0%Vals AIAs of 11/05/2026
Code MigrationCOBOL · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 70%Claude Sonnet 5: 68.6%Vals AIAs of 10/29/2026
CyberBench v1.1PoC · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 61.7%Claude Sonnet 5: 41.7%Vals AIAs of 11/05/2026
EMBDataroom · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 85.5%Claude Sonnet 5: 84.9%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 Sonnet 5: 42.1%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,130.36 eloClaude Sonnet 5: 1,075.82 eloArtificial AnalysisAs of 11/06/2026
IOIIOI 2025 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 31.3%Claude Sonnet 5: 42%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 Sonnet 5: 87.8%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevReact development · higher is betterClaude Haiku 5.5: 1,608Claude Sonnet 5: 1,540LMArenaAs of 10/28/2026
LMArena Text, Style ControlChinese · higher is betterClaude Haiku 5.5: 1,468Claude Sonnet 5: 1,498LMArenaAs of 10/28/2026
ProgramBenchFully Resolved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 2.5%Claude Sonnet 5: 0%Vals AIAs of 11/05/2026
SRE BenchFully Solved · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 5.7%Claude Sonnet 5: 0.4%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 Sonnet 5: 57.4%Vals AIAs of 11/05/2026
Terminal-Bench 4.0Media · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 25%Claude Sonnet 5: 8.3%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceEngineering Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 0%Claude Sonnet 5: 0%Vals AIAs of 11/05/2026
Code MigrationCode Quality · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 4.825 / 5Claude Sonnet 5: 4.898 / 5Vals AIAs of 10/29/2026
EMBDCF · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 55.1%Claude Sonnet 5: 56.4%Vals AIAs of 10/20/2026
Finance Agent (v2)Comparables · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 45.3%Claude Sonnet 5: 45.8%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,630.83 eloClaude Sonnet 5: 1,470.38 eloArtificial AnalysisAs of 11/06/2026
IOIIOI 2026 · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 42.8%Claude Sonnet 5: 42.5%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 Sonnet 5: 32.6%Vals AIAs of 11/05/2026
LMArena Code Arena WebDevWeb development · higher is betterClaude Haiku 5.5: 1,589Claude Sonnet 5: 1,540LMArenaAs of 10/28/2026
LMArena Text, Style ControlCoding · higher is betterClaude Haiku 5.5: 1,489Claude Sonnet 5: 1,520LMArenaAs of 10/28/2026
ProgramBenchRaw Pass Rate · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 78.7%Claude Sonnet 5: 72.1%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 Sonnet 5: 30%Vals AIAs of 11/05/2026
Terminal-Bench 4.0ML · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 63.6%Claude Sonnet 5: 18.2%Vals AIAs of 11/05/2026
Terminal-Bench-ScienceLife Sciences · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 15.8%Claude Sonnet 5: 10.5%Vals AIAs of 11/05/2026
EMBLBO · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 28.2%Claude Sonnet 5: 60%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 Sonnet 5: 62.1%Vals AIAs of 10/29/2026
GDPval-AAOverall · higher is betterClaude Haiku 5.5: 1,282.5 eloClaude Sonnet 5: 1,166.62 eloArtificial AnalysisAs of 11/06/2026

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