We've retired the Claude Sonnet 4 model (claude-sonnet-4-20250514) and the Claude Opus 4 model (claude-opus-4-20250514). All requests to these models will now return an error. We recommend upgrading to Claude Sonnet 4.6 and Claude Opus 4.8 respectively. Researchers can request ongoing access through the External Researcher Access Program.
Fetched June 17, 2026
In compliance with the US Government's directive, access to Claude Fable 5 is now suspended on AI Gateway for all users. We do not know if…
VercelAs of June 12, 2026, GPT-5.2 models (Instant, Thinking, and Pro) are no longer available in ChatGPT. Existing conversations that used GPT-5…
OpenAI · ChatGPTClaude Opus 4.1 model ( ) is being deprecated with retirement scheduled for August 5, 2026. Users are recommended to migrate to Claude Opus…
Anthropic · Claude PlatformAn upgrade to our Opus class of models, with stronger performance across coding, agentic tasks, and professional work, and the consistency…
Anthropic · Anthropic News
