GPT-5.6 Sol

by OpenAI model

OpenAI's current frontier model, described in its own documentation as the "Frontier model for complex professional work" and the recommended starting point "for complex reasoning and coding". Context window is 1.05M tokens. Two siblings share the generation: GPT-5.6 Terra balances intelligence against cost, and GPT-5.6 Luna targets cost-sensitive, high-volume workloads — so Sol is the one to reach for when the task is hard, not when it is merely large.

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