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- Claude Sonnet 5.5 vs. Claude Haiku 5.5
AnthropicLLM matchup
Claude Sonnet 5.5vs.Claude Haiku 5.5
Is the higher price worth it?
Claude Sonnet 5.5 performs better than Claude Haiku 5.5, but costs 20 times as much.
Claude Sonnet 5.5
Rank 4
Claude Haiku 5.5
Rank 20
Claude Sonnet 5.5
Claude Haiku 5.5
Claude Sonnet 5.5
Claude Haiku 5.5
Claude Sonnet 5.5
Rank 33 of 875
Claude Haiku 5.5
Rank 3 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 Sonnet 5.5 for
Choose Claude Haiku 5.5 for
No clear advantage
On this page
Where is the difference?
Strengths at a glance
Sonnet 5.5Haiku 5.5
The median of all ranked models is below 100 in every area, so it sits in the centre of the net.
95 % range: Sonnet 5.5 119.6 to 130.9, Haiku 5.5 102.5 to 109.9.
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.
Sonnet 5.5 is ahead in 9 of 10 areas, Haiku 5.5 in none.
Sonnet 5.5 ahead: 9too little data: 1
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
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 Sonnet 5.5 vs. Claude Haiku 5.5 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.
| Effort | Sonnet 5.5 | Haiku 5.5 | Gap | Verdict | Test series |
|---|---|---|---|---|---|
| low | 95.1 | 80.8 | 10.8 | Sonnet 5.5 ahead | 11 |
| medium | 101.0 | 90.4 | 7.2 | Sonnet 5.5 ahead | 11 |
| high | 111.9 | 96.6 | 11.9 | Sonnet 5.5 ahead | 11 |
| xhigh | 118.1 | 101.3 | 13.4 | Sonnet 5.5 ahead | 11 |
| max | 122.8 | 103.4 | 15.0 | Sonnet 5.5 ahead | 12 |
| Overall index (max vs. max) | 122.8 | 103.4 | 19.5 | Sonnet 5.5 ahead |
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.
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.
Claude Sonnet 5.5

Oct 1, 2026 · 28 s · $0.04
Test details
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- anthropic/claude-sonnet-5.5
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 3,886 tokens
- Cost of the attempt
- $0.0389
- Response time
- 28.2 s
- API model reported in response
- anthropic/claude-sonnet-5.5
- Pinned endpoint
- Anthropic | anthropic/claude-sonnet-5.5-20260928
- 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.
Claude Haiku 5.5
Not tested yet
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 Sonnet 5.5
Unavailable in this round
Claude Haiku 5.5
Unavailable in this round
Claude Sonnet 5.5 and Claude Haiku 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
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.
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 5.5: 77 to 61 out of 100.
Over time
Weekly values from October 18, 2026 to November 5, 2026
Claude Sonnet 5.5Claude Haiku 5.5
All data side by side
The better value is bold. For the overall index only when the gap is clear.
| Metric | Claude Sonnet 5.5 | Claude Haiku 5.5 |
|---|---|---|
| Intelligence | ||
| Overall indexpoints, 100 = reference group average, higher is better | 122.8 | 103.4 |
| Rank | Rank 4 of 91 | Rank 20 of 91 |
| Price per 1M tokens | ||
| Inputwhat you send | $2 | $0.10above 100,000 tokens: $0.50 |
| Outputwhat the model writes | $10 | $0.50above 100,000 tokens: $2.50 |
| Speed | ||
| Tokens per second | 151 | 236 |
| Popularity | ||
| Popularitysearch, usage and mentions, 0 to 100 | 61Rank 33 of 875 | 77Rank 3 of 875 |
| Technical | ||
| Context windowhow much text the model reads at once | 1 M tokens≈ 1,500 A4 pages | 1 M tokens≈ 1,500 A4 pages |
| Knowledge cutoff | June 2026 | June 2026 |
| Released | Sep 28, 2026 | Oct 7, 2026 |
| Availability | Active | Active |
| Open weights | no | no |
Prices without caching or batch discounts · Page count as a rule of thumb from Artificial Analysis
Is there a better choice?
Overall index 126.1, rank 1. $4 input and $20 output per 1M tokens.
Sonnet 5.5 vs. Claude Opus 5.5Shared 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 Sonnet 5.5B: Claude Haiku 5.5
Show 54 more benchmarks
More comparisons
Compare Claude Sonnet 5.5 and Claude Haiku 5.5 with the models people compare them with most often.
Compare another matchup
Predecessor and successor
The most popular comparisons
- 1Claude Haiku 5.5 vs. GPT-6 Luna
- 2Claude Opus 5.5 vs. Claude Sonnet 5.5
- 3Claude Sonnet 5.5 vs. Gemini 3.8 Flash
- 4Claude Haiku 5.5 vs. DeepSeek V4.1 Flash 1017
- 5Claude Haiku 5.5 vs. DeepSeek-V4-Flash
- 6Claude Haiku 5.5 vs. DeepSeek-V4.1-Flash
- 7Claude Sonnet 5.5 vs. DeepSeek-V4.1-Flash
- 8Claude Opus 5.5 vs. Claude Haiku 5.5
- 9Claude Sonnet 5.5 vs. Claude Opus 5
Show all 74 comparisons
- 10Claude Sonnet 5.5 vs. GPT-5.6 Terra
- 11Claude Sonnet 5.5 vs. Qwen 3.8 Max 0902
- 12Claude Haiku 5.5 vs. GLM-5.3
- 13Claude Haiku 5.5 vs. Gemini 3.5 Flash-Lite
- 14Claude Sonnet 5.5 vs. Claude Fable 5.1
- 15Claude Haiku 5.5 vs. Gemini 3.8 Flash
- 16Claude Sonnet 5.5 vs. GPT-6.1 Sol
- 17Claude Sonnet 5.5 vs. GLM-5.3
- 18Claude Sonnet 5.5 vs. Kimi K3
- 19Claude Sonnet 5.5 vs. DeepSeek-V4-Flash
- 20Claude Sonnet 5.5 vs. DeepSeek-V4-Pro
- 21Claude Haiku 5.5 vs. Claude Sonnet 4.5
- 22Claude Sonnet 5.5 vs. Gemini 3.1 Pro Preview
- 23Claude Sonnet 5.5 vs. Claude Fable 5
- 24Claude Sonnet 5.5 vs. Grok 4.7
- 25Claude Sonnet 5.5 vs. Gemini 3.6 Flash
- 26Claude Haiku 5.5 vs. Claude Sonnet 5
- 27Claude Sonnet 5.5 vs. Claude Sonnet 4.6
- 28Claude Haiku 5.5 vs. Claude Opus 5
- 29Claude Haiku 5.5 vs. GPT-6 Astra
- 30Claude Haiku 5.5 vs. Gemini 3.5 Flash
- 31Claude Haiku 5.5 vs. Claude Opus 4.8
- 32Claude Sonnet 5.5 vs. GPT-6 Luna
- 33Claude Sonnet 5.5 vs. GPT-6 Sol
- 34Claude Sonnet 5.5 vs. Claude Opus 4.6
- 35Claude Haiku 5.5 vs. Gemini 4 Argon
- 36Claude Haiku 5.5 vs. Grok 4.7
- 37Claude Sonnet 5.5 vs. DeepSeek V4.1 Flash 1017
- 38Claude Sonnet 5.5 vs. Muse Spark 1.3
- 39Claude Haiku 5.5 vs. GPT-5.6 Luna
- 40Claude Haiku 5.5 vs. Qwen 3.8 Max 0902
- 41Claude Sonnet 5.5 vs. GPT-5.6 Sol
- 42Claude Sonnet 5.5 vs. Gemini 4 Argon
- 43Claude Haiku 5.5 vs. Muse Spark 1.3
- 44Claude Haiku 5.5 vs. Claude Sonnet 4.6
- 45Claude Haiku 5.5 vs. Gemini 3.7 Flash
- 46Claude Sonnet 5.5 vs. Claude Opus 4.8
- 47Claude Haiku 5.5 vs. Mistral Large 4
- 48Claude Sonnet 5.5 vs. Claude Opus 4.7
- 49Claude Haiku 5.5 vs. GPT-6.1 Sol
- 50Claude Sonnet 5.5 vs. GLM-5.2
- 51Claude Sonnet 5.5 vs. GPT-6 Astra
- 52Claude Sonnet 5.5 vs. Gemini 3.5 Flash-Lite
- 53Claude Haiku 5.5 vs. Gemini 3.1 Pro Preview
- 54Claude Haiku 5.5 vs. GLM-5.3-Flash
- 55Claude Haiku 5.5 vs. DeepSeek-V4-Pro
- 56Claude Haiku 5.5 vs. GPT-5.6 Sol
- 57Claude Sonnet 5.5 vs. GPT-5.6 Luna
- 58Claude Haiku 5.5 vs. Gemini 3.6 Flash
- 59Claude Sonnet 5.5 vs. Qwen 3.8 27B
- 60Claude Sonnet 5.5 vs. Gemini 3.7 Flash
- 61Claude Sonnet 5.5 vs. GLM-5.3-Flash
- 62Claude Haiku 5.5 vs. Claude Opus 4.6
- 63Claude Sonnet 5.5 vs. Muse Wonder Full
- 64Claude Haiku 5.5 vs. Kimi K2.6
- 65Claude Sonnet 5.5 vs. Mistral Large 4
- 66Claude Sonnet 5.5 vs. Claude Sonnet 4.5
- 67Claude Haiku 5.5 vs. Claude Opus 4.7
- 68Claude Sonnet 5.5 vs. Gemini 3.5 Flash
- 69Claude Haiku 5.5 vs. Mistral Large 3
- 70Claude Haiku 5.5 vs. GPT-5.5
- 71Claude Sonnet 5.5 vs. Mistral Medium 3.5
- 72Claude Sonnet 5.5 vs. Claude Haiku 4.5
- 73Claude Haiku 5.5 vs. GPT-6.1 Terra
- 74Claude Sonnet 5.5 vs. Kimi K3.1 Pro