Claude

Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released. Claude Haiku 5.5 is designed for high-volume, cost-sensitive tasks. It reliably handles quick and repetitive workloads (like summaries, compactions, database queries, and classification requests). It … Read more

Claude Haiku 5.5 is built for high-volume, latency-sensitive work such as classification, routing, extraction, and subagent tasks. It supports adaptive thinking with the effort parameter, a 1M token context window, and up to 128k output tokens. It uses the same … Read more

Opus 5.5 works well with the way you already use Claude. A few things behave differently, though: it works for longer on its own, it tells you plainly what it did, and it thinks before every reply. This guide covers … Read more

Subscribe to updates for Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API via email and/or text message. You’ll receive email notifications when incidents are updated, and text message notifications whenever Claude creates or resolves an incident. … Read more

Introducing Claude Sonnet 5.5, the second model in the Claude 5.5 family. It’s a clear upgrade over Claude Sonnet 5, runs 30%+ faster, and costs up to 30% less for most work. Sonnet 5.5 is a faster, lower-cost complement to … Read more

drawgent connects your own Claude Code, Codex or opencode (your install, login, config and repo) to an Excalidraw whiteboard. Ask for a diagram in the chat panel, or write AGENT: … next to the part of a drawing you want … Read more

Claude Code skills that turn one of your chess games into a post-mortem you can actually read: plain-language explanations of your mistakes, checked against Stockfish, and a narrated video of the whole game. out-010.mp4 If the player above does not … Read more

We’re introducing a new life sciences research group and laboratory at Anthropic. Our focus is on fundamental biology research using Claude: exploring datasets of DNA to identify uncharacterized protein families, generating hypotheses at scale, and testing them through experiments in … Read more