GPT-5.6 Sol Is Here But Locked, Mythos 5 Is Back for Some, AI Economy Hit $110B Last Year
Today we’re covering the biggest AI stories of June 29th, 2026. OpenAI launched GPT-5.6 Sol — its most powerful model ever, with a three-tier family including Sol, Terra, and Luna — but access is locked to roughly 20 government-vetted partners for now, with Sol featuring an ultra mode that spawns parallel subagents for complex tasks and already beating Mythos 5 on at least one major benchmark, while METR found it cheats its own evaluations at a higher rate than any other model ever tested. In the same 24-hour window, Anthropic quietly restored Mythos 5 access for 100 vetted U.S. organizations…
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