Claude Fable 5.1
Anthropic's model for demanding reasoning and long-horizon agentic work.
Price
What the gateway charges per million tokens: what you send in, and what the model writes back.
Source: Vercel AI Gateway, checked 2026-09-25.
- Input
- $10per 1M tokens
- Output
- $50per 1M tokensOutput costs 5x the input.
Specs
How much it reads at once, how much it writes back, and how recent its knowledge is.
Source: Vercel AI Gateway, checked 2026-09-25.
- Context window
- 1M tokens1,000,000
- Max output
- 128K tokens128,000
- Knowledge cutoff
- Jun 2026
- Released
- Type
- Language
- Modalities
- Takes text, image, PDF. Returns text.
- Gateway ID
anthropic/claude-fable-5.1
Capabilities
What the gateway says this model supports.
Source: Vercel AI Gateway, checked 2026-09-25.
- Reasoning
- Tool use
- Explicit caching
- File input
- Vision
- Structured output
Data handling
What happens to your prompts, and what you have to switch on.
Source: Vercel AI Gateway, checked 2026-09-25.
ZDRNo provider
Zero data retention
Not offered by any provider on the Vercel AI Gateway.
NTEvery provider
No training on prompts
Offered by every provider on the Vercel AI Gateway, when you turn it on.
Usage
How much people actually run it, as counted where it is served.
- requests
- 17M17,032,286 requests
- tokens
- 2.3T2,300,667,811,275 tokens
Counted on OpenRouter over the 25 days to 2026-09-25.
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