Boris Cherny

Claude @anthropicai

[Boris Cherny @bcherny]

@rileybrown Woah

[Boris Cherny @bcherny]

@kevin_t_ngo Woah

[Boris Cherny @bcherny]

Pro users get one reset, and Max, Ultra, and Team Premium get up to three, depending on how long you've subscribed:
https://t.co/JkknwZZGyh

[Boris Cherny @bcherny]

We wanted to do more for the people who’ve been with us the longest. So with Fable 5.2, the longer you’ve been subscribed, the more Fable resets you get.

[Claude @claudeai]

Introducing Claude Fable 5.2 and Claude Mythos 5.2, designed to tackle the most daunting technical challenges.

They’re capable collaborators on ambitious projects in many fields, and show improvements in areas like coding, reasoning, and vision.

[ClaudeDevs @ClaudeDevs]

Background subagents in Claude Code now use less of your usage limit.

A running subagent updates its status line every 30 seconds, and each update used to re-read its whole conversation. Now Haiku 5.5 writes it from short notes instead, so each update costs about 99% less.

[Boris Cherny @bcherny]

Signing in to your company's plugins one by one is annoying, so we let Claude auto-connect to them now.

Team and Enterprise admins can set them up, and teammates are connected automatically the first time they use the plugins.

[ClaudeDevs @ClaudeDevs]

Users can now auto-connect plugins when they log in to Claude, with MCP servers that accept Claude as a trusted issuer.

If you’re building plugins for Claude, add support so users get started faster and stay connected without re-authorizing.

[Boris Cherny @bcherny]

@PlasmaAI @IdaeanDaktyl Wow, neat!

[Boris Cherny @bcherny]

We're removing the 5-hour limit for verified Ultra accounts.

[Claude @claudeai]

We’re renaming our Max plans:

Max 5x → Max
Max 20x → Ultra

Max is still $100/month, and Ultra is still $200. If you’re a subscriber, there’s nothing you need to do.

We’re also removing the 5-hour limit for verified Ultra accounts, starting today with most existing subscribers. Newer accounts keep a temporary limit until they’re verified, which helps us prevent fraud and abuse. You'll get an email when it's removed.

Weekly limits remain unchanged. View our plans here: https://t.co/niRpyGF5Me

[Boris Cherny @bcherny]

@sam_commonly @CampbellKaleb23 Just landed CLAUDE_CODE_SUBAGENT_EFFORT

CLAUDE_CODE_SUBAGENT_EFFORT=low claude

Or, customize it in your custom agent config

[Boris Cherny @bcherny]

@azlenelza Seems reasonable yeah

[Simon Willison @simonw]

I think October represents another inflection point in capabilities for coding agents and the models that drive them: Claude Opus 5.5 can now build video games that are actually fun https://t.co/aPsJ14RHR0

[Boris Cherny @bcherny]

Thanks to everyone who shared session IDs. We went through all of them. We found a few smaller things along the way that made some sessions burn through tokens faster than they should have, and we're rolling out fixes to those right now.

We didn't find a single root cause or any regression in Claude Code. In most cases, users who saw faster usage against limits were traced back to one or two heavy sessions (xhigh effort, /goal, Workflows, Agent Teams, long SDK jobs). These are all good ways to use Claude Code, and it's on us to make it clearer when to use them and how much these features cost.

It's good idea to keep an eye on the effort level you're on. Subagents inherit it by default and it can add up fast. /usage also shows where a session's tokens went.

If something still looks off, we'd love your /feedback. We'll also follow up directly with everyone who shared an ID.

[Boris Cherny @bcherny]

@CampbellKaleb23 We’re digging into this and will report back very soon

[Boris Cherny @bcherny]

Utah gave Claude Code to 34 developers across 10 state agencies. 80% had a working environment within 30 minutes, 71% reported saving 20+ hours by the end of the four-week pilot.

[Anthropic @AnthropicAI]

We're expanding our partnership with @USGSA. Under a new OneGov agreement, we are bringing Claude to federal, state, local, tribal, and territorial governments at 40% off.
https://t.co/p0lA6cP2y1

[Boris Cherny @bcherny]

@btn_hikky @CampbellKaleb23 Still digging

[Boris Cherny @bcherny]

@cagrimbakirci @CampbellKaleb23 Hi mind running this?

find ~/.claude/projects -type f -mtime -3 -regextype posix-extended -regex '.*/[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\.jsonl' -printf '%f\n' | sed 's/\.jsonl$//' | sort -u

[Boris Cherny @bcherny]

@SebastianKits @CampbellKaleb23 Hi mind running this?

find ~/.claude/projects -type f -mtime -3 -regextype posix-extended -regex '.*/[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\.jsonl' -printf '%f\n' | sed 's/\.jsonl$//' | sort -u

[Boris Cherny @bcherny]

@codemeoww @CampbellKaleb23 Mind running this? Team is digging in

find ~/.claude/projects -type f -mtime -3 -regextype posix-extended -regex '.*/[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\.jsonl' -printf '%f\n' | sed 's/\.jsonl$//' | sort -u

[ClaudeDevs @ClaudeDevs]

We’re adding support for MCP Tasks and Elicitations in Claude.

Tasks let Claude give plugins long-running jobs such as deep research and report back when they’re done.

[Boris Cherny @bcherny]

@GlitchyMagic_ @CampbellKaleb23 DM’d for more info to help debug