A leak inside OpenAI’s Codex platform briefly revealed a new GPT-5.5 family of models. Developers spotted the models in an internal selection menu and reported faster coding performance and improved token efficiency. Screenshots circulated online before the listing disappeared. OpenAI has not confirmed the models, but the leak suggests the company may be preparing a new update to its next-generation AI systems.
A leak inside OpenAI’s Codex platform briefly revealed a new GPT-5.5 family of models. Developers spotted the models in an internal selection menu and reported faster coding performance and improved token efficiency. Screenshots circulated online before the listing disappeared. OpenAI has not confirmed the models, but the leak suggests the company may be preparing a new update to its next-generation AI systems.