Claude Fable 5
By Anthropic
Released: 2026-07-01
Anthropic's flagship frontier model and the first of its Mythos-class tier. Suspended by a US government directive on 12 June 2026, it returned globally on 1 July after export controls were lifted. Artificial Analysis scores it 60 on the Intelligence Index — the highest in the current field — and 77 on the Coding Agent Index, at the highest cost per task in the set ($2.75).
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Leverages advanced AI technology to deliver cutting-edge capabilities and results.
Fast & Efficient
Optimized performance ensures quick results without compromising on quality.
Purpose-Built
Specifically designed for llms tasks and workflows.
Anthropic Model Timeline
1M tokens context
1M tokens context
Long-context context
200k tokens context
200k tokens context
1,000k tokens context
200k tokens context
200k tokens context
1,000k tokens context
200k tokens context
200k tokens context
200k tokens context
200k tokens context
200k tokens context
Specifications
AI Evaluation
The most capable generally available model on independent benchmarks, with a turbulent regulatory history and a premium cost per task.
Pros
- Highest Artificial Analysis Intelligence Index (60)
- Strong agentic coding (77 Coding Agent Index)
- 1M-token context window
Cons
- Highest cost per task in the frontier set
- Was suspended for most of June 2026 — regulatory risk
- No published per-token pricing at relaunch
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