Anthropic
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Listed September 2026
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Multimodal Foundation
Claude Fable 5.1
Arena #6 • score 1501 ±6
Proprietary model from Anthropic, listed September 2026. Arena text score 1501 (#6 of 414 entries). $10.00 input / $50.00 output per 1M tokens. 1M tokens context.
Parameters
Not disclosed
Context Window
1M tokens
Input / 1M tokens
$10.00
Output / 1M tokens
$50.00
Benchmark Results
- Arena Text Elo: 1501 (#6 of 414 on arena.ai · ±6 · 13,063 votes · variant: claude-fable-5.1-max)
- AA Intelligence Index: 53.4 (Artificial Analysis v4.3 · best setting: Claude Fable 5.1 (Max, Default Fallback) · checked 2026-10-11)
- AA Coding Index: 81.6 (Artificial Analysis v4.3 · best setting: Claude Fable 5.1 (Max, Default Fallback) · checked 2026-10-11)
- AA Agentic Index: 57.9 (Artificial Analysis v4.3 · best setting: Claude Fable 5.1 (Max, Default Fallback) · checked 2026-10-11)