🔬 research2026-06-29T00:00:00.000Z
OpenAI GPT-5.6: Sol, Terra, Luna — The Subagent Era, Government-Gated Release, and the New Frontier Pricing
OpenAI launched the GPT-5.6 family on June 26, 2026: Sol (flagship), Terra (balanced), and Luna (fast/affordable). Sol achieves 91.9% on Terminal-Bench 2.1 with Ultra mode's subagent orchestration, competes with Mythos Preview on ExploitBench² using 1/3 the tokens, and introduces the most robust safety stack to date. The launch is government-gated in limited preview, pricing starts at $1/$6 for Luna, and Cerebras integration promises 750 tokens/second in July.
#OpenAI#GPT-5.6#Sol#Terra#Luna#Subagents#Cybersecurity#Cerebras