OpenAI's GPT-6 Sol and Luna cut prices in half but barely move the needle on performance
What happened
With GPT-6 Sol and Luna, OpenAI adds two cheaper models that deliver their predecessors' performance at half the token price and take aim at Anthropic's pricier offerings. Independent analyses find little gain in actual intelligence, though, and OpenAI likely didn't see Anthropic's simultaneous launch of Opus 5.5 coming.
Summary assembled by rule from the sources below