Simon Willison’s Weblog

Introducing Claude. Anthropic released the first two versions of Claude, "a next-generation AI assistant based on Anthropic’s research into training helpful, honest, and harmless AI systems". Claude and Claude Instant are both available via a web chat interface and through their API.

(I back-filled this link on Feb 25th 2026 to help fill out my llm-release tag.)

# 14th March 2023, 8:01 pm / ai, generative-ai, llms, anthropic, claude, llm-release