GPT-5.6OpenAIAI ModelReviewCodingGPT-5.5
GPT-5.6 Review: OpenAI's New Flagship Beats Fable 5 by 13 Points, Costs Less Per Token
GPT-5.6 launches 3 models: Sol beats Fable 5 by 13 points on benchmarks, Terra matches GPT-5.5 at half the cost, Luna outperforms Opus 4.8 for less.