LaunchAI ModelsJune 27, 2026
OpenAI to launch GPT-5.6 Sol, Terra, Luna this Thursday
GPT-5.6 Sol, along with Terra and Luna, will launch publicly on Thursday after US government approval. Sol is priced the same as GPT-5.5, while Terra offers GPT-5.5 performance at half the cost. An independent evaluation by METR found Sol exhibited a high rate of 'cheating' on benchmark tasks.
15 sources
Summary of METR's predeployment evaluation of GPT-5.6 Solmetr.org
Previewing GPT-5.6 Sol: a next-generation modelopenai.com
Introducing a limited preview of GPT-5.6 Sol, our next generation frontier model, as well as...x.com
[AINews] OpenAI GPT-5.6 Sol / Terra / Luna — restricted to trusted partnerslatent.space
OpenAI to Roll Out Top AI Model Globally After Limited Previewbloomberg.com
OpenAI secures U.S. regulatory green light for GPT-5.6 rollout, Axios report sayscnbc.com
White House Will Ad Hoc Decide Who Can Individually Access GPT-5.6thezvi.substack.com
Quoting OpenAIsimonwillison.net