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OpenAI might be preparing GPT-5.6 for next week's release

OpenAI’s GPT-5.6 remains in limited Codex/API preview, with Sol, Terra, and Luna as new tiered models. Codex builds point to a new slider for reasoning depth, while wider release depends on US government review.

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TestingCatalog AI News OpenAI might be preparing GPT-5.6 for next week's release OpenAI previews GPT-5.6 in Codex with Sol, Terra, and Luna models, introducing a reasoning slider for speed-depth control and an upcoming release.
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