Anthropic launches Claude Fable 5.1
Claude Fable 5.1 is now live in Claude Code and the Claude Platform, priced the same as Fable 5 with 75% cheaper API cache reads ($0.25/MTok, down from $1/MTok). It scores 55.8% on Terminal-Bench 4.0, ahead of Fable 5 (42%) and Opus 5 (52.3%).
How this story unfolded
10 days · 28 reports · 97 community posts · 125 of 128 shown
- Aug 26
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- Aug 31
- Sep 1
v2.1.257github.com
2.1.257code.claude.com
Introducing Claude Fable 5.1youtube.com
Anthropic Says New Fable 5.1 AI Model Is Cheaper, Better at Codingbloomberg.com
Anthropic's Claude Fable 5.1 and Mythos 5.1 arrive with a 75% cost reduction for Fable cache readsventurebeat.com
Claude Fable 5.1 now available on AI Gatewayvercel.com
Introducing Claude Fable 5.1 on AWSaws.amazon.com
Anthropic Ships Claude Fable 5.1, More Than Doubling Its Predecessor on Key Benchmarkdecrypt.co
Anthropic’s new Fable release is cheaper, less restrictivetechcrunch.com
Anthropic’s Fable 5.1 is a bit cheaper, a bit smarter, and refuses a lot lessthenewstack.io
Anthropic Releases Claude Fable 5.1 and Claude Mythos 5.1: 52.6% on Terminal-Bench-Science and 75% Cheaper Cache Readsmarktechpost.com
Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic worktheverge.com
- Sep 2
Claude Fable 5.1 made me a really nice animated pelicansimonwillison.net
[AINews] Claude Fable/Mythos 5.1: new SOTA model, 75% cache price cut but 70% more output tokenslatent.space
- Sep 3
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- Sep 6
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