Claude Fable 5.1: release date and what it's for
Released , according to Anthropic's release notes. Anthropic's top of the range, and priced like it. If Opus 5.5 already passes your evals you're paying more than double for nothing.
- Status
- Live
- Released
- Lab
- Anthropic
- Input
- $10per million tokens
- Output
- $50per million tokens
- Context window
- 1Mtokens
- Max output
- 128Ktokens
API model ID: claude-fable-5-1
What is Claude Fable 5.1 capable of?
33 posts from people showing what they made with Claude Fable 5.1, newest and most-reacted first. People are posting code, video, image and game made with it.
Each card is the original post, shown the way X or Reddit embeds it, with a link to where it came from. We picked the ones that show something being made and skipped the benchmark screenshots. We can't vouch for any of them being unedited.
What we've written about Claude Fable 5.1
Anthropic says new defenses cut the data distillers take from Claude by 90 to 99%
The company names Zhipu and Moonshot, and says honest developers are paying part of the cost.
Meta releases Muse Wonder, the models Zuckerberg says bring it to the frontier
Meta built them to remember you between chats and push through hard tasks, but its full safety report isn't out yet.
Gemini 4 Argon is out to cyber defenders only, with paid API and Ultra next
Google's own benchmark table has it leading most rows, but it also prints the ones Argon loses.
Remote Labor Index: GPT-6 Astra now passes on 20.83% of real freelance projects
Eleven months ago the best agent managed 2.5% of the same jobs.
Claude models explained: Opus 5.5, Fable 5.1, Mythos and why there's no Opus 5.1
The newest Opus beats the flagship on Anthropic's own benchmark table, but the flagship is still the one Anthropic tells you to move up to.
Grok 4.7, Grok 4.8 and Grok Build: which Grok is out and what each one is for
Grok 4.7 shipped ten days after Musk said it needed a few more days, and the next one has a size but no date.
Opus 5.5 sends most cybersecurity tasks to Opus 4.8, and costs 20% less per token
Anthropic's first model since the pacing essay ships with Fable 5.1's biology and cyber safeguards, and it says the model often suspects it's being tested.
xAI's own table puts Grok 4.7 ahead of Fable 5.1 on three of seven benchmarks
Input tokens cost $2 a million against Fable 5.1 Max's $10, and output $6 against $50, on a table xAI drew itself.
How Claude Fable 5.1 compares on price and context
inputoutput
- Claude Fable 5.1$10 / $50
- Claude Mythos 5.1$10 / $50
- GPT-6 Astra$10 / $50
- Claude Opus 5$5 / $25
- Claude Opus 5.5$4 / $20
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
how much it reads at once
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Claude Fable 5.11M
- Claude Opus 5.51M
- Claude Mythos 5.11M
- Claude Opus 51M
Next to the newest Anthropic models and the current model from other labs. Prices are in US dollars per million tokens.
What is Claude Fable 5.1?
Claude Fable 5.1 is a model from Anthropic, built in the US. It's out, and you can use it today.
When did Claude Fable 5.1 come out?
Anthropic released it on September 1, 2026. That date comes from Anthropic's release notes.
More from Anthropic
Claude Opus 5.5
- in /1M
- $4
- out /1M
- $20
- context
- 1M
Claude Mythos 5.1
- in /1M
- $10
- out /1M
- $50
- context
- 1M
Claude Opus 5
- in /1M
- $5
- out /1M
- $25
- context
- 1M
Claude Sonnet 5
- in /1M
- $2
- out /1M
- $10
- context
- 1M
Claude Fable 5
- in /1M
- $10
- out /1M
- $50
- context
- 1M
Claude Haiku 4.5
- in /1M
- $1
- out /1M
- $5
- context
- 200K
Claude Sonnet 4.5
- in /1M
- $3
- out /1M
- $15
- context
- 200K
More news: Anthropic news and Claude updates
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