Claude Fable 5.1 API Pricing
Anthropic · released Sep 1, 2026 · 1M context · API model ID claude-fable-5-1
Claude Fable 5.1 by Anthropic API pricing: $10.00 per 1M input tokens and $50.00 per 1M output tokens (verified against the official pricing page, Oct 9, 2026).
Prices
| Price | USD per 1M tokens |
|---|---|
| Input | $10.00 |
| Output | $50.00 |
| Cache read | $0.25 |
| Cache write | $12.50 |
| Batch input | $5.00 |
| Batch output | $25.00 |
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Estimated monthly cost
$10,500
per month
- per day
- $350.00
- per request
- $0.035
Cannot estimate: a needed price is not published.
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Monthly cost by workload
| Workload | Per month |
|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $10,500/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $15,750/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $6,300/mo |
Context and capabilities
- Context
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input
- text, image, pdf
- Output
- text
- Knowledge cutoff
- June 2026
- Open weights
- No
- Tool calling
- Yes
- Reasoning
- Yes
- Structured outputs
- Yes
Capabilities and limits as listed by models.dev.
Similarly priced models
- GPT-6 Astra · $10.00 in / $50.00 out
- Claude Opus 5.5 · $4.00 in / $20.00 out
- Kimi K3 · $3.00 in / $15.00 out
- Gemini 3.1 Pro Preview · $2.00 in / $12.00 out
Price history
No price changes since we started tracking on Oct 8, 2026.
Questions
- How much does Claude Fable 5.1 cost per month?
- For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Claude Fable 5.1 costs about $10,500 per month at the provider's official prices (verified) ($10.00 per 1M input tokens, $50.00 per 1M output tokens).
- Does Claude Fable 5.1 support prompt caching?
- Yes. Cached input costs $0.25 per 1M tokens, compared with $10.00 for regular input. Writing to the cache costs $12.50 per 1M tokens.
- How long is Claude Fable 5.1's context window?
- Claude Fable 5.1 accepts up to 1,000,000 tokens (1M) of context and returns up to 128,000 tokens per response.
- Does Claude Fable 5.1 have a batch price?
- Yes. Asynchronous batch requests cost $5.00 per 1M input tokens and $25.00 per 1M output tokens.