LaunchAI ModelsJune 26, 2026
OpenAI launches GPT-5.6 Sol, Terra, Luna in limited preview
OpenAI unveiled GPT-5.6 as a three-model family (Sol, Terra, Luna) in a limited preview restricted to about 20 trusted partners at the request of the U.S. government. Sol is the flagship model, competitive with Anthropic Mythos Preview on coding benchmarks while being more efficient.
15 sources
Previewing GPT-5.6 Sol: a next-generation modelopenai.com
GPT-5.6 sol launches thursday! happy buildingx.com
Meet a mathematician solving previously unsolvable math problems with GPT-5.6youtube.com
OpenAI Previews GPT-5.6 Sol With Restricted Access and Stronger Cyber Safeguardsthehackernews.com
[AINews] OpenAI GPT-5.6 Sol / Terra / Luna — restricted to trusted partnerslatent.space
OpenAI unveils GPT-5.6 Sol, Terra and Luna models — but only accessible to limited preview partners for now, per US Govventurebeat.com
OpenAI Unveils GPT-5.6 Sol as Its Most Advanced Cybersecurity AIsecurityweek.com
OpenAI Previews GPT-5.6 With Sol, Terra, and Luna: Tiered Models, New Reasoning Modes, Limited Accessmarktechpost.com
DeepSWE just added the gpt-5.6 models to their benchmark. I hope you guys don't get too used to Claude Code as your only coding agent. Chart is marked NSFW due to the grotesque violence.reddit.com
GPT-5.6 Sol, along with Terra and Luna, will launch publicly this Thursdaytwitter.com