GPT‑5.6 is available starting today across ChatGPT, Codex, and the OpenAI API. The rollout is starting globally now and will continue gradually toward full availability over the next 24 hours.
In ChatGPT, Plus, Pro, Business, and Enterprise users access GPT-5.6 Sol through
GPT‑5.6 improves artifact quality across presentations, documents, and spreadsheets, and works better with your templates.
These editable artifacts can be exported to the tools professionals already use and refined as part of real enterprise workflows. https://t.co/dfA4KBmrGu
GPT‑5.6 delivers a step change in design judgment.
Its stronger computer-use capabilities let it inspect and refine the rendered result—not just generate the underlying code or content—so it can catch visual and functional issues and apply finishing touches before handing the ht…
GPT-5.6 launches with ultra mode, our highest-performance setting to accelerate your most ambitious work by coordinating multiple agents to work in parallel.
It trades higher token use for stronger and faster results on demanding tasks. https://t.co/UojPDNOfSH
On the Artificial Analysis Coding Agent Index, GPT‑5.6 Sol sets a new state of the art at 80.0—2.8 points above Claude Fable 5—while using less than half the output tokens, taking less than half the time, and costing about one-third less. https://t.co/H5o0qJKUOL
GPT-5.6 Sol sets a new standard for intelligence and efficiency, delivering state-of-the-art performance across coding, knowledge work, cybersecurity, and science with fewer tokens and lower cost.
https://t.co/7uR7WdyOQz
On Agents' Last Exam, GPT‑5.6 Sol sets a new high of 53.6, eclipsing Claude Fable 5 (adaptive) by 13.1 points.
At medium reasoning, it beats Fable 5 by 11.4 points at roughly one-quarter the estimated cost. GPT‑5.6 Terra and Luna also outperforms Fable 5 at around one-sixteenth …
X — OpenAI Developers
TIER_1English(EN)·OpenAIDevs·
GPT-5.6 is rolling out in the API.
Sol is our flagship model, leading in coding, knowledge work, cybersecurity, and science.
Terra delivers performance competitive with GPT-5.5 at lower cost. Luna is our fastest, most affordable model for high-volume tasks. https://t.co/bHeEdIL…
Bluesky Jetstream — AI desk
TIER_1English(EN)·simonwillison.net·
Notes on GPT-5.6, which includes some interesting new additions to the API (programmatic tool calling and multi-agent in particular) - plus 18 pelicans for the 6 reasoning levels and 3 new models: simonwillison.net/2026/Jul/9/g...
