Release35d ago
Claude Code 2.1.284: defaults Sonnet to claude-sonnet-5-5 (1M ctx, $2/$10); /mcp reconnect all + spend limits in /usage
Anthropic shipped Claude Code v2.1.284 on 2026-09-28 (@anthropic-ai/[email protected]): claude-sonnet-5-5 is now the default Sonnet on the Anthropic API—1M context, $2/$10 per MTok, $0.20/MTok cache reads. Adds “Yes, but ask again next time” for auto-mode reads, /mcp reconnect all, dollar spend limits in /usage and the status line (used_usd/limit_usd/period), and rebindable effort-slider keybindings. Stability fixes: damaged streams writing undefined, overloaded errors after thinking blocks, and double-compact when Prompt-too-long persists.
Tooling4d ago
Anthropic adds two sentences to Claude Code's Opus 5.5 prompt to steer it away from recreating specific existing games; original and genre games still allowed
Around Oct 27, users noticed Claude Code receiving a new server-side rule (flag name tengu_heron_brook): build original games, games in a genre, and games from the user's own designs and assets, but do not build a recreation of a specific existing game, even if it is renamed or called original. The post that surfaced it drew about 8,700 likes and nearly 2 million views on Oct 30. The same day, Addy Osmani, who works on Claude Code at Anthropic, confirmed on X that the team added two sentences to Claude Code's prompt on Opus 5.5 because using Claude to infringe IP is against Anthropic's usage policy. He said original games, genre games, and games built from your own designs and assets should keep working, that the team will keep iterating, and that users can send him wrongly refused requests.
Tooling6d ago
Claude Code lead Boris Cherny on faster usage drain: every shared session reviewed, no regression found, fixes for a few smaller issues rolling out
Since Oct 21 many developers on X have complained that Claude Code was draining usage limits much faster. On Oct 28 (UTC) Boris Cherny, who leads Claude Code at Anthropic, replied on X that the team reviewed every session ID users shared, found no single root cause and no regression in Claude Code, and is rolling out fixes for a few smaller issues that made some sessions burn tokens faster. Most fast-drain cases traced back to one or two heavy sessions using xhigh effort, /goal, Workflows, Agent Teams or long SDK jobs.
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