Claude Fable 5.1
anthropic / claude-fable-5-1 / official pricing
Context 1000k · Max output 128k · Last verified 2026-09-15
Standard pricing (per 1M tokens)
| Tier | Input | Output |
|---|---|---|
| Standard | $10.00 | $50.00 |
Prompt caching
| Type | Price / 1M |
|---|---|
| Cache type | explicit |
| Cache read (hit) | $0.25 |
| Cache write (5-min TTL) | $12.50 |
| Cache write (1-hour TTL) | $20.00 |
| Minimum cacheable tokens | 1024 |
Want to model your real cache savings? Try the cache calculator with this model selected.
Batch API
- Input discount50%
- Output discount50%
- Stacks with cachingyes
See the batch decision tool for whether this fits your workload.
Capabilities
caching batch tool use vision reasoning extended thinking
Notes & extras
- Web search: $10.00 per 1,000 searches
- Reasoning tokens: billed as output
- Cache hits are priced at 0.025x base input on Fable 5.1, not the usual 0.1x. Adaptive thinking is always on. Uses the tokenizer introduced with Opus 4.7: the same text produces roughly 30% more tokens than Sonnet 4.6 and earlier, so per-token estimates based on older tokenizers undercount.
Sources
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