Leaks point to unannounced Claude Fable 5.5 and GPT-6.2 Astra
Users on X claim Anthropic is quietly testing Fable 5.5 and OpenAI is preparing GPT-6.2 Astra, but nothing has been confirmed.
By GennnAi··1 min read
AnthropicClaude Fable 5.5Claude Opus 5.5MythosOpenAIGPT-6.2 AstraCodexLiteLLMModèlesEntreprisesFlash
Some Opus 5.5 requests are reportedly routed to an unidentified model. A “Mythos 5.5” label appeared on November 1 in the code of Anthropic’s Mythos page, and a “claude-fable-5-5” entry in the LiteLLM catalog on October 13; both were removed. “gpt-6.2-astra” shows up in Codex usage data for some accounts. Anthropic, which filed for an IPO on October 26, cannot start its roadshow before November 10.
Source: Decrypt, published on November 2, 2026.