Anthropic News

The Verge
1 min read

Anthropic releases its first Mythos-class model Claude Fable

Anthropic just announced Claude Fable 5, a new AI model it said is the most powerful model it has ever made widely available. According to the company, Fable 5 "shows exceptional performance in software engineering, knowledge work, and vision," with its lead over other models growing as tasks...

Simon Willison
1 min read

Uber Caps Usage of AI Tools Like Claude Code to Manage Costs

Uber Caps Usage of AI Tools Like Claude Code to Manage Costs I wrote the other day about Uber blowing its 2026 AI budget in four months, and how that wasn't particularly surprising given they would have set that budget in 2025, before anyone could have predicted how popular token-burning coding...

Simon Willison
1 min read

Pasted File Editor

Tool: Pasted File Editor I really like how you can paste a large volume of text into claude.ai (or the Claude desktop/mobile apps) and it will detect it as a large paste and turn it into a file attachment instead. I decided to have Codex desktop build me a version of that as a prototype. You can...

Simon Willison
1 min read

May 2026 newsletter

I just sent out the May edition of my sponsors-only monthly newsletter. If you are a sponsor (or if you start a sponsorship now) you can access it here. This month: Al got expensive, and Anthropic had a really good month The model releases were a little disappointing Conferences and podcasts I...

Simon Willison
1 min read

The solution might be cancelling my AI subscription

The solution might be cancelling my AI subscription I find this post by David Wilson very relatable. David lists 16+ projects he's spun up with AI tooling, and concludes: I didn't mean to build most of these things. Usually the Claude session started with something like "write a quick script for...

Simon Willison
1 min read

Quoting Karen Kwok for Reuters Breakingviews

Anthropic defines “run-rate revenue” in two parts. Use the last 28 days of sales ⁠from customers charged on a consumption basis and multiply it by 13. Then, multiply the monthly subscription take by 12, ​and add the two together. — Karen Kwok for Reuters Breakingviews, citing "a person...

Simon Willison
1 min read

How we contain Claude across products

How we contain Claude across products A complaint I often have about sandboxing products is that they are rarely thoroughly documented, and in the absence of detailed documentation it's hard to know how much I can trust them. Anthropic just published a fantastic overview of how their various...

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