Anthropic
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Listed June 2026
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Multimodal Foundation
Claude Fable 5
Arena #4 • score 1504 ±4
Proprietary model from Anthropic, listed June 2026. Arena text score 1504 (#4 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: 1504 (#4 of 414 on arena.ai · ±4 · 40,026 votes · variant: claude-fable-5-high)
- OSWorld-Verified: 86.0% (Success rate · 100 steps · tested 2026-08-01)
- AA Intelligence Index: 49.6 (Artificial Analysis v4.3 · best setting: Claude Fable 5 (Max, Opus 4.8 Fallback) · checked 2026-10-11)
- AA Coding Index: 76.5 (Artificial Analysis v4.3 · best setting: Claude Fable 5 (Max, Opus 4.8 Fallback) · checked 2026-10-11)
- AA Agentic Index: 50.7 (Artificial Analysis v4.3 · best setting: Claude Fable 5 (Max, Opus 4.8 Fallback) · checked 2026-10-11)