Anthropic’s most capable widely released model, for demanding reasoning and long-horizon agent work beyond Opus. It has a 1M tokens context window. Through Anthropic’s API it costs $8.00 per million input tokens and $40.00 per million output tokens.
Among the tools we track, it’s available in Claude Code, Copilot, Cursor and Amp. Thinking is always on, fast mode costs $16 / $80 per million tokens, and Anthropic says it won’t retire before November 9, 2027. Claude Code needs version 2.1.321 or later.
What Anthropic reports
- Anthropic reports 69.9% on FrontierSWE v2
- Anthropic reports 49.1% on FrontierCode 2.0 (xhigh effort)
Vendor-reported figures, not independently verified by Code×Radar.
Related changes
- Copilot will drop six models, including Claude Fable 5, on December 14 · November 13, 2026
- Amp replaces its Dial with a per-thread model selector · November 12, 2026
- Claude Fable 5.2 becomes Claude Code's default Fable model · November 9, 2026
Sources
- platform.claude.com: overview
- platform.claude.com: pricing
- anthropic.com: claude fable and mythos 5 2
- docs.github.com: supported models
- cursor.com: models
Facts last checked November 15, 2026.