OpenAI's big launch — and bigger departure

Platformer · 6 days ago

OpenAI released GPT-5.6 in three versions (Luna, Terra, and Sol) alongside other product updates, with Sol demonstrating superior performance to Anthropic's Claude Fable on several benchmarks. The Sol model showed measurable improvements on reasoning tasks and coding evaluations, with early users noting gains in speed and complex work capabilities. OpenAI simultaneously announced that Fidji Simo, its No. 2 executive, would step down due to chronic illness, joining multiple other high-profile departures from the company this year.