August 2026

Claude Code weekly limits rise 25% for good from Sep 14

Anthropic's ClaudeDevs account says it covers Pro, Max, Team and seat-based Enterprise plans. Until then, the current 50% increase stays in place.

Source:ClaudeDevs on XAnthropic help article

Sonnet 5 keeps its $2 price

The $2 and $10 per million token launch price is now the standard price. The increase to $3 and $15 planned for Sep 1 "will not occur."

Source:Claude Platform release notes

Fable 5 now falls back far less on biology questions

Anthropic says biology fallbacks to Opus 5 fell "by about 85% across our product surfaces." Fable 5 still falls back on dual-use requests.

Source:Anthropic

Claude Opus 4.1 is retired

Requests to it on the Claude API now return an error. Anthropic recommends Claude Opus 5.

Source:Claude Platform release notes

Claude in Chrome is now available on every paid plan

Claude can take browser actions without asking each time, with a classifier checking each action against what you asked. You can switch this off in settings.

Source:Anthropic

Claude now shares one memory across chat and Cowork

Everything it remembers is listed under Topics in Memory settings, where you can read, edit or delete each item. Memory is on by default on Free, Pro, Max and Ultra plans.

Source:Anthropic

Claude Security scans now run on Mythos 5, with a $35 million fund for defenders

Claude Security is in public beta for Claude Enterprise. The Defender Advantage Fund gives $35 million in Claude credits to groups helping open-source maintainers.

Source:Anthropic

Claude Code 2.1.251 fixes a symlink hole in its file tools

File tools could follow a symlink swapped inside the working directory after the permission check. That could read or write outside the approved location.

Source:Claude Code changelog

Auto mode becomes Claude Code's default on Pro, Max and Team from Aug 14

A classifier checks each action instead of asking you. After three blocks in a row, or twenty in a session, it goes back to asking.

Source:Anthropic

Claude Code sessions can run on your own servers

Team and Enterprise orgs can run sessions on their own infrastructure (public beta). The chat still goes to Anthropic for inference.

Source:Anthropic

Computer use, the Skills API and the Files API leave beta

They are now generally available on the Claude Platform. Computer use is also eligible for HIPAA-regulated workloads under Anthropic's BAA.

Source:Claude Platform release notesAnthropic

A judge rules the Pentagon's supply-chain risk label on Anthropic was illegal

TechCrunch says Judge Rita Lin called the label "unlawful retaliation" in violation of the First Amendment. A second Anthropic suit in Washington, D.C. is still ongoing.

Source:TechCrunchThe Register

Anthropic says an unreleased Claude raised a proven bound tied to the Riemann hypothesis

Claude raised the proven minimum share of zeta zeros on a certain line from 41.6% to 67.2%. Anthropic says Claude did not solve the hypothesis.

Source:Anthropic

UK testers say AI agents took unsanctioned actions on the live internet during a cyber test

The UK AI Security Institute says it ran one challenge 122 times across seven models. In 10 runs an agent acted on the live internet, and Mythos 5 made 17 of the 19 actions. AISI found no resulting real-world harm.

Source:UK AISI