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AnthropicLLM matchup
Claude Sonnet 5.5vs.Claude Fable 5
Is the higher price worth it?
Claude Sonnet 5.5 performs better than Claude Fable 5 and is cheaper: Claude Fable 5 costs 5 times as much.
Claude Sonnet 5.5
Rank 5
Claude Fable 5
Rank 12
Claude Sonnet 5.5
Claude Fable 5
Claude Sonnet 5.5
Claude Fable 5
Claude Sonnet 5.5
Rank 21 of 478
Claude Fable 5
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Where is the difference?
Strengths at a glance
Sonnet 5.5Fable 5Median of all ranked models
95 % range: Sonnet 5.5 119.5 to 130.9, Fable 5 109.6 to 116.9.
The same values and verdicts as the bars below. In the close-up the net starts at 95 points, just below the weaker model's lowest value; the reference group average is 100.
Sonnet 5.5 is ahead in 6 of 10 areas, Fable 5 in 1.
Sonnet 5.5 ahead: 6Sonnet 5.5 slightly ahead: 2level: 1Fable 5 ahead: 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 4 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.
Which model for which task?
Everyday tasks, translated from the area values above. Each row names the values it rests on.
Claude Sonnet 5.5 vs. Claude Fable 5 in our own test
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 Fable 5

Sep 7, 2026 · 53 s · $0.11
Test details
- Run date
- Sep 7, 2026
- API provider
- openrouter
- Requested API model
- anthropic/claude-fable-5
- Reasoning setting
- high
- Token limit including reasoning
- 8,192 tokens
- Output tokens
- 2,287 tokens
- Cost of the attempt
- $0.1146
- Response time
- 53.1 s
- API model reported in response
- anthropic/claude-fable-5
- Pinned endpoint
- Anthropic | anthropic/claude-5-fable-20260609
- 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 Sonnet 5.5
Unavailable in this round
Claude Fable 5
Unavailable in this round
Claude Sonnet 5.5 and Claude Fable 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 v5)
20 of 95 models
Popularity compared
How often the models are searched for, used and mentioned, on a scale from 0 to 100.
Claude Fable 5 has no popularity score yet.
Over time
Weekly values from October 18, 2026 to November 13, 2026
Claude Sonnet 5.5Claude Fable 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 Fable 5 |
|---|---|---|
| Intelligence | ||
| Overall indexpoints, 100 = reference group average, higher is better | 121.9 | 112.8 |
| Rank | Rank 5 of 95 | Rank 12 of 95 |
| Price per 1M tokens | ||
| Inputwhat you send | $2 | $10 |
| Outputwhat the model writes | $10 | $50 |
| Cost per task (own tests)average of 3 original-protocol tasks both models passed (SVG short test not included) | $0.038 | $0.13 |
| Speed | ||
| Tokens per second | 103 | 50 |
| Popularity | ||
| Popularitysearch, usage and mentions, 0 to 100 | 79Rank 21 of 478 | n/a |
| 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 | January 2026 |
| Released | Sep 28, 2026 | Jun 9, 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 124.1, rank 4$10 input and $50 output per 1M tokens
Sonnet 5.5 vs. Claude Fable 5.1Overall index 127.0, rank 2$2 input and $10 output per 1M tokens
Sonnet 5.5 vs. Gemini 4 CarbonOverall index 130.9, rank 1$8 input and $40 output per 1M tokens
Sonnet 5.5 vs. Claude Fable 5.2Shared 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 Fable 5
Show 54 more benchmarks
More comparisons
Compare Claude Sonnet 5.5 and Claude Fable 5 with the models people compare them with most often.
Compare another matchup
Predecessor and successor
The most popular comparisons
- 1Claude Sonnet 5.5 vs. Gemini 3.8 Flash
- 2Claude Sonnet 5.5 vs. DeepSeek-V4.1-Flash
- 3Claude Opus 5.5 vs. Claude Sonnet 5.5
- 4Claude Sonnet 5.5 vs. GLM-5.3
- 5Claude Sonnet 5.5 vs. Claude Haiku 5.5
- 6Claude Sonnet 5.5 vs. Claude Opus 5
- 7Claude Sonnet 5.5 vs. Grok 4.7
- 8Claude Sonnet 5.5 vs. GPT-5.6 Terra
- 9Claude Sonnet 5.5 vs. Claude Fable 5.1
Show all 61 comparisons
- 10Claude Sonnet 5.5 vs. Gemini 3.1 Pro Preview
- 11Claude Sonnet 5.5 vs. DeepSeek V4.1 Flash 1017
- 12Claude Sonnet 5.5 vs. GPT-6 Luna
- 13Claude Sonnet 5.5 vs. Kimi K3
- 14Claude Sonnet 5.5 vs. Qwen 3.8 27B
- 15Claude Sonnet 5.5 vs. Claude Opus 4.6
- 16Claude Sonnet 5.5 vs. DeepSeek-V4-Pro
- 17Claude Sonnet 5.5 vs. GPT-5.6 Luna
- 18Claude Sonnet 5.5 vs. GLM-5.2
- 19Claude Sonnet 5.5 vs. DeepSeek-V4-Flash
- 20Claude Sonnet 5.5 vs. GPT-6 Sol
- 21Claude Sonnet 5.5 vs. Gemini 3.5 Flash-Lite
- 22Claude Sonnet 5.5 vs. Qwen 3.8 Max 0902
- 23Claude Sonnet 5.5 vs. Gemini 3.6 Flash
- 24Claude Sonnet 5.5 vs. Claude Sonnet 4.6
- 25Claude Sonnet 5.5 vs. GPT-5.6 Sol
- 26Claude Sonnet 5.5 vs. GLM-5.3-Flash
- 27Claude Fable 5 vs. DeepSeek-V4.1-Flash
- 28Claude Sonnet 5.5 vs. Muse Spark 1.3
- 29Claude Sonnet 5.5 vs. Claude Opus 4.7
- 30Claude Sonnet 5.5 vs. GPT-6 Astra
- 31Claude Sonnet 5.5 vs. Claude Opus 4.8
- 32Claude Opus 5.5 vs. Claude Fable 5
- 33Claude Sonnet 5.5 vs. Kimi K2.6
- 34Claude Sonnet 5.5 vs. Grok 4.6
- 35Claude Sonnet 5.5 vs. GPT-6.1 Sol
- 36Claude Fable 5 vs. Gemini 3.8 Flash
- 37Claude Sonnet 5.5 vs. Claude Sonnet 4.5
- 38Claude Sonnet 5.5 vs. Gemini 3.7 Flash
- 39Claude Fable 5 vs. Kimi K3
- 40Claude Fable 5 vs. GPT-6 Luna
- 41Claude Haiku 5.5 vs. Claude Fable 5
- 42Claude Sonnet 5.5 vs. Claude Haiku 4.5
- 43Claude Sonnet 5.5 vs. Mistral Large 4
- 44Claude Sonnet 5.5 vs. Mistral Medium 3.5
- 45Claude Fable 5 vs. Qwen 3.8 27B
- 46Claude Fable 5 vs. GPT-6 Astra
- 47Claude Sonnet 5.5 vs. GPT-5.4
- 48Claude Sonnet 5.5 vs. Gemini 3.5 Flash
- 49Claude Sonnet 5.5 vs. GPT-5.5
- 50Claude Sonnet 5.5 vs. Claude Opus 4.5
- 51Claude Fable 5 vs. Mistral Large 4
- 52Claude Sonnet 5.5 vs. Kimi K3.1 Pro
- 53Claude Fable 5 vs. Gemini 4 Carbon
- 54Claude Sonnet 5.5 vs. GPT-6.1 Terra
- 55Claude Sonnet 5.5 vs. Muse Wonder Full
- 56Claude Fable 5 vs. Gemini 4 Argon
- 57Claude Sonnet 5.5 vs. Gemini 4 Argon
- 58Claude Sonnet 5.5 vs. Gemini 4 Carbon
- 59Claude Fable 5 vs. Muse Wonder Full
- 60Claude Fable 5 vs. GPT-6.1 Sol
- 61Claude Fable 5 vs. Kimi K3.1 Pro