Quanta AI Labs

OpenAI · Reasoning

GPT-5.6 Sol

Next-gen model family previewed June 26 in three variants — Sol (flagship), Terra (balanced), Luna (affordable) — with a new max reasoning effort and a subagent-driven Ultra mode; Sol scores 88.8% (Ultra 91.9%) on TerminalBench 2.1 and ~9 points above GPT-5.5 on biology evals, priced $5/$30 per 1M tokens, initially limited to ~20 orgs.

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