Original sourceKompozyAdditional: Developers Digest
Summary
OpenAI confirmed it will integrate GPT-5.6 Sol Ultra into Codex. It is not a standalone model but an enhanced mode of Sol that uses sub-agents to parallelize complex tasks and allow longer reasoning time. Officials claim Ultra scored 91.9% on Terminal-Bench 2.1, beating base Sol’s 88.8% and Claude…
Key points
- Gives developers the latest performance benchmarks, cost structure, and availability for GPT-5.6’s top-tier mode, aiding evaluation on whether to adopt Codex for high-complexity coding tasks.
- GPT-5.6 Sol Ultra represents a major update to OpenAI’s most powerful agentic coding tool; its parallel sub-agent mechanism could change the efficiency of AI-assisted complex software development.
- Enterprise development teams can expect Codex to gain stronger multi-step, cross-file code generation capability, but initial access is limited to select partners, and Ultra tasks come with higher costs—requiring ROI assessment.
Editorial note
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