Anthropic reportedly tests Fable 5.5 as OpenAI reportedly eyes GPT-6.2 Astra

Removed catalog entries and stray usage data point to new models from both labs, but neither company has confirmed anything Two of the biggest names in AI may be preparing their next models at the same time. Leaks suggest Anthropic could be testing something called Fable 5.5, while OpenAI may have a model labeled GPT-6.2 Astra in the works. Neither company has confirmed either model. The evidence so far is a few deleted listings and some odd labels in usage logs, which is roughly how most AI launches get spoiled these days. The timing is what makes this interesting. Anthropic is in the middle of an IPO process, and its roadshow cannot begin before November 10. What the leaks actually show On Anthropic’s side, a catalog entry for “Fable 5.5” surfaced on October 13, 2026. It was gone by the next day. On OpenAI’s side, the trail runs through Codex, the company’s coding product. A reference to “2-astra” showed up in Codex usage data for some accounts on November 1, 2026. That string lines up neatly with the naming of OpenAI’s current flagship, GPT-6 Astra. No independent benchmarks exist for Fable 5.5 or GPT-6.2 Astra. Nobody outside the two companies has published performance numbers,...