Model
Claude Fable 5.2.
Power
£££
API cost
by Anthropic · released 9 November 2026
In plain English
Anthropic's strongest model that most organisations can get, and its most expensive.
Good for
Long-running coding, research, and difficult agent work.
Things to be aware of
Prove it on your own work before making it the default. Sonnet costs a quarter as much and may well do the job.
What Anthropic says
““For demanding reasoning and long-horizon agentic work.””
What everyone else says
TechCrunch reported the engineering and science claims as Anthropic’s claims, which is how vendor benchmark results should be handled. TechCrunch, 9 November 2026
- Context window
- 1.0M tokens
- Knows up to
- June 2026
- Run it yourself
- No, online only
- API price
- $8 in / $40 out
- per million tokens