Model comparison
Claude Fable 5 vs Claude Fable 5.1
Compare published model capabilities and API prices.
Anthropic
Claude Fable 5
Claude Fable 5 is a Mythos-class model from Anthropic, built for autonomous knowledge work and coding. It supports text, image, and file inputs with text output, with reasoning sup
Anthropic
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, fro
| Metric | Claude Fable 5 | Claude Fable 5.1 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context window | 1,000,000 | 1,000,000 |
| Input $/Mtok | $10.00 | $10.00 |
| Output $/Mtok | $50.00 | $50.00 |
| Modalities | text, vision | text, vision |
| License | closed | unknown |
Quick take
On input price, Claude Fable 5 is cheaper at $10.00/Mtok. For context window, Claude Fable 5 leads with 1,000,000 tokens.
Pick based on your workload: high-volume cheap inference vs long-document / agent loops. Enterprise DNA can wire either model into Omni with evals, secrets, and job orchestration.