Model tracker / Anthropic
Claude Fable 5.1
Claude Fable 5.1 is a frontier model from Anthropic, released 1 September 2026. At Anthropic it costs $10.00 per million input tokens and $50.00 per million output tokens, with a 1M-token context window. 2 providers serve it; the cheapest is AWS at $10.00 input and $50.00 output.
- Made by
- Anthropic
- Released
- 2026-09-01
- Status
- Generally available
- Tier
- Frontier
- Weights
- Closed
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input
- text, image, pdf
- API id
claude-fable-5-1
Claude Fable 5.1 price at 2 providers
US dollars per million tokens. Blended is 3 input tokens for every output token, one number to compare on. The cheapest blended price is highlighted.
| Provider | Input | Output | Cached input | Blended | Batch | Checked |
|---|---|---|---|---|---|---|
| AWS · us.anthropic.claude-fable-5-1 | $10.00 | $50.00 | $0.25 | $20.00 | – | 2026-10-14 |
| Anthropic · maker | $10.00 | $50.00 | $0.25 | $20.00 | 50% off | 2026-10-14 |
- AWS: Global cross-region inference. Geo and In-region cross-region inference cost 10% more: $11 / $55 / $0.275 cached. Cache writes $12.50 (5 min) or $20 (1 h). No batch price. The us. profile id shown is a Geo profile, billed at the Geo rate; use the global inference profile for the Global price.
- Anthropic: Cache writes 1.25x (5 min) or 2x (1 h) input. US-only inference (inference_geo: us) costs 1.1x. Full 1M context at standard price.
Claude Fable 5.1 benchmarks
| Benchmark | Score | What it measures | Reported by |
|---|---|---|---|
| LMArena text score | 1501 | Elo-style score from people voting between answers | Independent |
Scores reported by a model's maker aren't independently checked.
Claude Fable 5.1 price changes
- Until 2026-10-14 at AWS: $11.00 input, $55.00 output per million tokens.
Models like Claude Fable 5.1
Other frontier models closest in price, at each maker's own price or the cheapest provider.
| Model | Input | Output | Context | Weights |
|---|---|---|---|---|
| Claude Fable 5.1 | $10.00 | $50.00 | 1M | Closed |
| GPT-6 Astra OpenAI | $10.00 | $50.00 | 1.1M | Closed |
| Claude Opus 5.5 Anthropic | $4.00 | $20.00 | 1M | Closed |
| Muse Wonder Meta | $4.00 | $20.00 | 1M | Closed |
| Gemini 4 Argon Google | $2.00 | $10.00 | 1M | Closed |
| Mistral Large 4 Mistral AI | $0.68 | $2.09 | 1M | Open |
Compare them all in the model tracker →
Claude Fable 5.1 on dbggr
- Gemini 4 Argon is out for every developer at $2/$10, and doubles to Claude Opus 5.5's price on 1 December Daily, 2026-10-13
- Meta's Muse Wonder costs as much as Claude Opus 5.5: $4 in, $20 out per million tokens Daily, 2026-10-12
- How to write instructions for AI agents: what's tested and what's vibes Article, 2026-10-09
Claude Fable 5.1 FAQ
How much does Claude Fable 5.1 cost?
Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 per million output tokens at Anthropic, and $0.25 per million cached input tokens, with 50% off for batch requests. Prices are list prices in US dollars, last checked 14 October 2026.
What is Claude Fable 5.1's context window?
Claude Fable 5.1 takes up to 1,000,000 tokens in one request and writes up to 128,000 tokens in one response.
Is Claude Fable 5.1 open weight?
No. Claude Fable 5.1 is only available through its providers' APIs; Anthropic doesn't publish the weights.
Where can I use Claude Fable 5.1?
Claude Fable 5.1 is available from AWS and Anthropic. At Anthropic, call it as claude-fable-5-1.