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AnthropicLLM matchup

Claude Haiku 5.5vs.Claude Opus 4.5

Is the higher price worth it?

Claude Haiku 5.5 performs better than Claude Opus 4.5 and is cheaper: Claude Opus 4.5 costs 50 times as much.

Haiku 5.5 ahead
IntelligenceOverall index, 100 points = average
103.4

Claude Haiku 5.5

Rank 20

73.3

Claude Opus 4.5

Rank 59

Haiku 5.5 faster
SpeedTokens per second
236

Claude Haiku 5.5

64

Claude Opus 4.5

Haiku 5.5 cheaper
Price$ per 1M tokens
$0.20

Claude Haiku 5.5

$10

Claude Opus 4.5

Haiku 5.5 more popular
Popularity0 to 100
77

Claude Haiku 5.5

Rank 3 of 875

26

Claude Opus 4.5

Rank 516 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

AgentsCodingReasoningHealthProductivityFinanceMathematicsLegal

Choose Claude Opus 4.5 for

No clear advantage

Where is the difference?

Strengths at a glance

Haiku 5.5Opus 4.5

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 5.5AgentsHaiku 5.5FinanceHaiku 5.5LegalHaiku 5.5HealthHaiku 5.5
CodingHaiku 5.5 ahead
Haiku 5.5106.2Rank 18
Opus 4.570.5no rank
Median of ranked models83.7

95 % range: Haiku 5.5 102.5 to 109.9, Opus 4.5 62.2 to 78.8.

AreaHaiku 5.5Opus 4.5

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: Knowledge, General, Multimodal.

Haiku 5.5 is ahead in 7 of 10 areas, Opus 4.5 in none.

Haiku 5.5 ahead: 7too little data: 3

Areas in the overall index
AgentsHaiku 5.5 +36106.1 to 70.0
CodingHaiku 5.5 +36106.2 to 70.5
ReasoningHaiku 5.5 +35105.2 to 70.5
MathematicsHaiku 5.5 +27107.1 to 80.5
Knowledgetoo little data85.5 to 74.5
Generalonly Haiku 5.5 has a score
Multimodalonly Opus 4.5 has a score
Specialist fields
HealthHaiku 5.5 +32108.9 to 77.3
FinanceHaiku 5.5 +27104.7 to 77.7
LegalHaiku 5.5 +2094.4 to 74.6

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
ProductivityHaiku 5.5 +28101.8 to 73.5
Cybersecurityonly Haiku 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 70.5
Maths and data analysisHaiku 5.5Mathematics 107.1 to 80.5, Reasoning 105.2 to 70.5
Facts and researchopenKnowledge 85.5 to 74.5 (too little data)
Agents and workflowsHaiku 5.5Agents 106.1 to 70.0
Fast chat repliesHaiku 5.5236 to 64 tokens per second
Security analysisopenCybersecurity without a score for Opus 4.5
Many requests on a small budgetHaiku 5.5$0.20 to $10 per 1M tokens
Finance, legal and medical textsHaiku 5.5Finance 104.7 to 77.7, Legal 94.4 to 74.6, Health 108.9 to 77.3
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 4.5

Claude Opus 4.5: Pelican on a bicycle
A community classic for free-form SVG drawing.

Oct 1, 2026 · 22 s · $0.05

Test details
Run date
Oct 1, 2026
API provider
openrouter
Requested API model
anthropic/claude-opus-4.5
Reasoning setting
high
Token limit including reasoning
8,192 tokens
Output tokens
1,810 tokens
Cost of the attempt
$0.0455
Response time
21.6 s
API model reported in response
anthropic/claude-opus-4.5
Pinned endpoint
Anthropic | anthropic/claude-4.5-opus-20251124
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 4.5

Unavailable in this round

Claude Haiku 5.5 and Claude Opus 4.5 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 Opus 4.573.3

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 4.5: 77 to 26 out of 100.

Over time

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

Claude Haiku 5.5Claude Opus 4.5

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 4.5
Intelligence
Overall indexpoints, 100 = reference group average, higher is better103.473.3
RankRank 20 of 91Rank 59 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 second23664
Popularity
Popularitysearch, usage and mentions, 0 to 10077Rank 3 of 87526Rank 516 of 875
Technical
Context windowhow much text the model reads at once1 M tokens≈ 1,500 A4 pages200,000 tokens≈ 300 A4 pages
Knowledge cutoffJune 2026May 2025
ReleasedOct 7, 2026November 2025
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 4.5Claude Opus 4.6

Overall index 81.9, rank 52. $5 input and $25 output per 1M tokens.

Haiku 5.5 vs. Claude Opus 4.6
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 Opus 4.5

MedCodeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 51.5%Claude Opus 4.5: 45.2%Vals AIAs of 10/29/2026
MedScribeOverall · higher is betterTest setup not documented as identicalClaude Haiku 5.5: 89.5%Claude Opus 4.5: 83.2%Vals AIAs of 10/29/2026

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