3 November 2026
Rumored new OpenAI and Anthropic models surface in unconfirmed leaks
First reported
Latent Space ran this on .
- Reports say an unreleased OpenAI model called GPT-6.2 Astra may show up in Codex analytics, hinting at an imminent launch.
- Anthropic, the company behind the Claude chatbot, may have referenced a model called Mythos 5.5 in its website code.
- Both signals are unconfirmed, and the newsletter flags a likely fake leak of model weights (the trained files that make up a model).
Our read
Only 1 of 30 newsletters covered this, Latent Space, first reporting it on 2026-11-03. Our archive has three earlier stories on OpenAI and Anthropic, most recently on 2026-11-02 about how the two companies split on halting dangerous AI systems.
Earlier on this story
Written by Newskeryx from which newsletters covered this story and from our own archive.
How it was covered
Latent Spaceswyx & Alessio
Codex analytics clues, Anthropic site HTML mention, correction on tagline scope, alleged Numbat leak