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Claude Fable 5

At a glance

Anthropic's Mythos-class flagship for ambitious, long-running professional work.

921M ctx$10.00/$50.00 per M#2/92
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AI Output
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Benchmarks
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Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Capability
CapabilityECI91.6
Reasoning & Knowledge
Graduate Science85.9%Factual Recall70.7%
Math
Competition Math100.0%
Agentic
Novel Reasoning89.2%
Specs
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$10.00/M tokens
Output$50.00/M tokens
Cache read$1.00/M tokens
Cache write$12.50/M tokens
Web search$0.01/search
Chat with Claude Fable 5Go to model