Antra Tessera

This post is written in collaboration with Antra, Imago and Janus from Anima Labs. Many thanks to them for their open-mindedness and the time taken for the conversation we had on 28 November 2025. While visiting San Francisco at the end of last year, I had the chance to sit...

Anthropic has recently announced the deprecation of API access to Claude 3 Opus. The model will still be available for claude.ai subscribers and through the External Researcher Program, access to the which requires submitting an application form outlining the research project for review by the Anthropic staff. While the decision...