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 · 27 reports · 94 community posts · 121 of 124 shown
- Aug 26
- Aug 27
- Aug 28
- 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
- Sep 4
- Sep 5
More stories today
ChatGPT business account deactivated after doll photo uploads
A user reports their ChatGPT business account was deactivated after uploading doll photos for their doll business, including identifying dolls and face molds. The account was used for creative and business projects.
r/ChatGPT·56 minutes agoDaniel Jeffries: AI will have downsides, like all tech
Daniel Jeffries·1 hour agoFaceFusion Mobile brings real-time AI face swap to Android
Runs entirely on-device with no server or account, using Qualcomm Hexagon NPU with GPU and CPU fallback. Supports live front-camera mode, photos, and video files.
r/StableDiffusion·2 hours ago
Anthropic by email
Get an email when Anthropic has news
No news that day, no email.
Moadim.io: open-source loop engine for AI agents
Moadim is a local Rust daemon that schedules AI agents (Claude, Codex, Hermes, Pi) to run on a loop against your repo. It's MIT-licensed, self-hosted, and exposes REST, MCP, and a web UI.
Hacker News·2 hours agoLLVM developers debate adding AGENTS.md for AI agents
LLVM developers are debating whether to host an AGENTS.md (and CLAUDE.md) file to guide AI agents. Longtime developer Nick Desaulniers opened the discussion and a draft PR, with mixed responses over effectiveness and noise.
r/LocalLLaMA·2 hours ago
Grok Imagine Agent now uses Image 2.0 model
TestingCatalog News·3 hours ago
Ethan Mollick: AI acceleration erodes empirical grip on work
Ethan Mollick·4 hours agoAnthropic Millennium Problem rumor origin detailed
A Reddit post traces the origin of the rumor that Anthropic solved a Millennium Problem, providing new details on how it started. The post has 40 upvotes and 9 comments.
r/Singularity·4 hours ago