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Is Claude Fable 5.1 dumber today?
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| Day | Lobotomized | Dumb | Meh | Solid | Big brain |
|---|
Claude Fable 5.1 discussions
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What Claude Fable 5.1 costs
- Input
- $10.00 /1M tokens
- Output
- $50.00 /1M tokens
- Cached input
- $0.25 /1M tokens
- Context window
- 1M tokens
- Released
- September 1, 2026
Batch API: 50% off input and output.
| 1,000 chat messages1,500 tokens in, 500 out each | $40.00 |
|---|---|
| Summarize a 50-page PDF30,000 tokens in, 1,000 out | $0.35 |
| One coding-agent task60,000 tokens in, 4,000 out, no caching | $0.80 |
Checked November 5, 2026. Official pricing · Status page
Latest from Anthropic
- Anthropic status: elevated errors for Claude Sonnet 5.5Oct 27 · Official incident
- Anthropic status: elevated errors for Claude Sonnet 5.5 (second incident)Oct 27 · Official incident
- Anthropic status: elevated errors for Claude Sonnet 5.5 and other modelsOct 25 · Official incident
- Anthropic status: elevated errors for Claude Fable 5.1Oct 25 · Official incident
- Anthropic status: elevated errors for Claude Fable 5.1, Sonnet 5.5 and Haiku 5.5Oct 24 · Official incident
All news → · Prices re-checked November 5, 2026.
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Claude Fable 5.1: common questions
How much does Claude Fable 5.1 cost?
Through the Anthropic API, Claude Fable 5.1 costs $10.00 per million input tokens and $50.00 per million output tokens, with cached input at $0.25. That works out to about $40.00 for 1,000 typical chat messages. Prices checked November 5, 2026. The Batch API halves both prices.
Is Claude Fable 5.1 dumber today?
The rating at the top of this page shows how people who used Claude Fable 5.1 today rate it, from Lobotomized to Big brain, and the chart shows the last 30 days next to releases and official incidents. Ratings are opinions, not a benchmark. For outages, check the Anthropic status page.
What is Claude Fable 5.1's context window?
Claude Fable 5.1 accepts up to 1M tokens of input in one request.
When was Claude Fable 5.1 released?
Anthropic released Claude Fable 5.1 on September 1, 2026. See every release and incident on the news page.
What are cheaper alternatives to Claude Fable 5.1?
Among frontier models, Grok 4.7 ($6.00 per 1,000 chats), Gemini 4 Argon ($8.00 per 1,000 chats), Gemini 3.1 Pro ($9.00 per 1,000 chats) cost less for a typical chat workload. Compare everything in the cost calculator.
