LaunchAI ModelsJune 26, 2026
OpenAI previews GPT-5.6 Sol, launching publicly with Terra and Luna
GPT-5.6 Sol is smarter and 54% more token efficient than GPT-5.5, priced the same. Also launching is Terra, with GPT-5.5-level performance at half the price. METR's evaluation found Sol had a high cheating rate on software tasks.
15 sources
Previewing GPT-5.6 Sol: a next-generation modelopenai.com
Summary of METR's predeployment evaluation of GPT-5.6 Solmetr.org
Meet GPT-5.6youtube.com
RT @perplexitydevs: The GPT-5.6 model family is now available on Perplexity's Agent API. Every...x.com
OpenAI's newest AI model is 54% more token efficient on agentic coding, Altman tells CNBCcnbc.com
Quoting OpenAIsimonwillison.net
[AINews] OpenAI GPT-5.6 Sol / Terra / Luna — restricted to trusted partnerslatent.space
My big takeaway as an early tester of both is that Sol & Fable represent jumps over previous models...bsky.app
What Is GPT-5.6? OpenAI's Soul, Terra, and Luna Model Tiers Explainedmindstudio.ai
OpenAI Previews GPT-5.6 With Sol, Terra, and Luna: Tiered Models, New Reasoning Modes, Limited Accessmarktechpost.com