Claude Fable 5.1
Point upgrade to Claude Fable 5 from Anthropic, aimed at agentic coding, long-running agentic workflows, and knowledge work. Same 1M context and rack rate as Fable 5.
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Context
1M
Weights
Closed
API only
Input
$10
/1M tok
Output
$50
/1M tok
Blended
$20
#455/ 464/1M · 3:1
Cache read
$0.25
0.03x input
Cache write
$12.50
1.25x input
Pricing via OpenRouter
Reported on 9 evals across 6 domains - best 100.0% on ProofBench · #1 of 57