Expired50% confidenceEventExact time
At the GPT-5.6 launch event, OpenAI stated that its flagship model Sol personally completed the post-training of the smaller model Luna.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/12/2026
First Seen
Valid until: 10/10/2026(expired)
Sources
Related Claims
UnverifiedGPT-5.6 Sol is capable of autonomously conducting post-training on Luna, with researchers needing only a brief Codex prompt to have the model configure the environment, select GPUs, and launch scripts on its own82% similarVerifiedGPT-5.6 Sol has autonomously completed post-training for Luna.81% similarUnverifiedIn the release livestream, OpenAI had GPT-5.6 Sol perform post-training optimization on the smaller GPT-5.6 Luna model, allowing it to autonomously search, run, and optimize within a given compute budget.78% similarUnverifiedGPT-5.6 Sol能够自主完成对Luna的后训练，既能扮演策略模型执行训练，也能扮演奖励模型提供反馈信号75% similarUnverifiedThe GPT-5.6 flagship model SO autonomously completed the post-training of the smallest model LUNA end-to-end.74% similar
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