Anthropic: Claude Fable 5
Analysis Summary
Claude Fable 5 is Anthropic’s flagship model in the Fable family, with excellent reasoning and coding measurements and strong agentic results. It supports image and file input, tool use, and function calling, with a one-million-token context window. The supplied results also show strong performance on tool-oriented tasks and long-context evaluation, making it capable across complex workflows.
For businesses, it is a fit for software engineering, agentic task execution, analysis of large document sets, and high-stakes client-facing content. Vision and file input allow teams to work across more than plain text, while tool interfaces support integration into structured workflows. Its main limitation is cost, with high listed input and output prices.
Adopt Fable 5 where reasoning depth, coding ability, or long-context work justifies premium usage. Pair it with a lower-cost model for routine requests and bulk processing.
Assessed September 23, 2026
Editorial notes
Claude Fable 5 combines excellent reasoning and coding measurements with strong agentic results, vision, file input, tool use, and a one-million-token context; premium pricing favors high-value work.
The DFO score ranks models on the Artificial Analysis Intelligence Index and is refreshed as new models launch. The write-up and verdict are our own. Feedback?
DFO Verdict
Claude Fable 5 combines excellent reasoning and coding measurements with strong agentic results, vision, file input, tool use, and a one-million-token context; premium pricing favors high-value work.
Benchmarks
Artificial Analysis data refreshed Oct 23, 2026. Arena ratings from the Oct 20, 2026 text leaderboard, with style control. Bars: magenta = reasoning, ink = coding and agents, cyan = instructions and long context.
How Anthropic: Claude Fable 5 compares
Anthropic: Claude Fable 5 ranks #10 of 443 AI models we track for overall intelligence, #7 of 198 for coding, #12 of 181 for agentic tasks. Its 1M-token context window is larger than 85% of the models we list. At $10.00 per million input tokens it is cheaper than 3% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $10.00 | $0.010000 |
| Output | $50.00 | $0.050000 |
What would Anthropic: Claude Fable 5 cost your business?
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A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 718 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save Anthropic: Claude Fable 5 for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout 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 support and..
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Frequently asked questions about Anthropic: Claude Fable 5
How much does Anthropic: Claude Fable 5 cost?
Anthropic: Claude Fable 5 costs $10.00 per million input tokens and $50.00 per million output tokens.
What is the context window of Anthropic: Claude Fable 5?
Anthropic: Claude Fable 5 has a context window of 1,000,000 tokens (1M).
Is Anthropic: Claude Fable 5 good for coding?
On our coding benchmark index, Anthropic: Claude Fable 5 ranks #7 of 198 models, placing it in the top quartile of the field for code generation and debugging.
What can Anthropic: Claude Fable 5 do?
Anthropic: Claude Fable 5 supports image/vision input, tool use, and function calling.
Who created Anthropic: Claude Fable 5?
Anthropic: Claude Fable 5 is developed by Anthropic and was released on June 9, 2026.