GPT-5.6 Sol Ultra will be in Codex
THE SO WHAT
If a top-tier model like GPT-5.6 Sol Ultra lands inside Codex, the constraint on AI-assisted development shifts further from ‘can it code this?’ to ‘can your org safely review and integrate what it produces?’. Teams relying on AI for core systems should be investing as much in test harnesses, code review policy, and observability as in model access.
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