Intelligence index
Outperforms 99% of compared models
Claude Fable 5.1
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.
- Input / output price
- $10/$50per 1M tokens
- Context
- 1.0M
- Released
- 2026-09-01
Pricing
Artificial Analysis
Explore rankingsCoding index
Outperforms 100% of compared models
Agentic index
Outperforms 100% of compared models
Design Arena
Elo scores and win rates across design and agent tasks.
Category performance
1,000-1,500 EloModel Arena
Asciiart
1321Elo
Win rate 65%
Data Visualization
1344Elo
Win rate 61.8%
Game Development
1381Elo
Win rate 65.6%
3D
1390Elo
Win rate 67.7%
Code Categories
1335Elo
Win rate 59.3%
SVG
1296Elo
Win rate 56.4%
Website
1312Elo
Win rate 56.3%
UI Component
1333Elo
Win rate 59.6%
Agent Arena
Fullstack
1326Elo
Win rate 57.2%
Godotgamedev
1327Elo
Win rate 60.7%
Htmlslides
1394Elo
Win rate 56.5%
Python-pptxslides
1318Elo
Win rate 60.8%
Spreadsheet
1416Elo
Win rate 70.4%
Webapps
1318Elo
Win rate 56.1%
Mobile Apps
1265Elo
Win rate 56.3%
Related Models
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- Context
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- Max output
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- Input
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- Output
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- Context
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- Max output
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- Input
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- Context
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- Max output
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- Released
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- Input
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- Output
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- Cache read
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