Anthropic › Claude Fable 5.1 › Pricing
Claude Fable 5.1 pricing
API list price by Anthropic · same on Amazon Bedrock, Azure, Google · checked Oct 23, 2026
$10 / $50per 1M tokens in / out
$0.25cache read · −97%
$5 / $25batch · −50%
$2.98per task at medium?
#57on OpenRouter by tokens · 291.8B / week
Price sheetper 1M tokens
| Input | $10 | list |
| Output | $50 | |
| Cache read | $0.25 | −97% vs input |
| Cache write · 5 min | $12.50 | +25% vs input |
| Cache write · 1 h | $20 | +100% vs input |
| Batch input | $5 | −50% |
| Batch output | $25 | −50% |
| Context · max output | 1M · 128K | tokens |
Cost per task by effort?
low$2.3748.9
mediumAPI default$2.9853.8
high$3.9155.9
xhigh$5.9858.7
max$7.6359.1
per taskHumanity's Last Exam
Same price per token at every effort; the bill grows with reasoning tokens. max costs 2.6× medium for +5.3 points.
Where to buy4 providers · per 1M tokens
| Provider | Input | Output | Context |
|---|---|---|---|
| Amazon Bedrock | $10 | $50 | 1M |
| Anthropiclab | $10 | $50 | 1M |
| Azure | $10 | $50 | 1M |
| $10 | $50 | 1M |
In Anthropic's line-upper 1M in / out
| Claude Haiku 5.5 | $0.10 / $0.50 | −99% |
| Claude Sonnet 5.5 | $2 / $10 | −80% |
| Claude Opus 5.5 | $4 / $20 | −60% |
| Claude Fable 5.1 | $10 / $50 | this model |
| Claude Mythos 5 | $10 / $50 | 0% |
| Claude Mythos 5.1 | $10 / $50 | 0% |
Cheaper for the same workvs Fable 5.1 at medium
| Claude Opus 5.5 high | -39% | score +10% | $1.82 |
| Gemini 4 Argon high | -33% | score +7% | $1.99 |
| GPT-6 Astra xhigh | -23% | score +7% | $2.31 |
| Claude Sonnet 5.5 xhigh | -33% | score +6% | $2.01 |
| GPT-6.1 Sol max | -76% | score +6% | $0.72 |
Pricing questions
How much does Claude Fable 5.1 cost?›
$10 per 1M input tokens and $50 per 1M output tokens on Anthropic's API and Amazon Bedrock, Azure, Google. Cached input is $0.25. Batch requests cost $5 / $25. One Intelligence Index task costs about $2.98 at the default effort.
Is Claude Fable 5.1 free to use?›
There is no free API tier.
How much does prompt caching save?›
Cache reads cost $0.25 per 1M, 97% below the input price. Writing to the cache costs $12.50 per 1M (5m TTL).
Is Claude Fable 5.1 cheaper than Claude Fable 5?›
It costs the same per token: $10 / $50.
How does effort change the price?›
The price per token is the same at every effort. Higher effort spends more reasoning tokens: a task costs $2.37 at low, $2.98 at medium, $3.91 at high, $5.98 at xhigh, $7.63 at max.
What is a cheaper alternative to Claude Fable 5.1?›
Claude Opus 5.5 at high effort costs -39% per task with a score +10% on Humanity's Last Exam.