What the GPT‑5.6 Leak Reveals About Anthropic’s Upcoming Claude Sonnet 4.8

A developer’s log entry exposed an undocumented "gpt‑5.6" route at OpenAI, while Anthropic’s Claude Code source leak unveiled model names like Sonnet 4.8, Opus 4.7 and the new codename Jupiter, suggesting both companies are accelerating internal model iteration far beyond public release cycles and reshaping the competitive landscape for developers.

AI industryAnthropicClaude

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