OpenAI publicly launched its GPT-5.6 AI model series on July 9, 2026, after a delay requested by the US government over national security concerns [1, 2, 3]. The launch includes three versions: Sol, the flagship and most advanced model; Terra, a mid-tier cost-efficient option; and Luna, a low-cost, fast variant [1, 2, 3, 4].
The US Department of Commerce approved the broad public release of GPT-5.6 following additional testing under the voluntary AI oversight framework established during the Trump administration [1, 2, 3, 5]. OpenAI initially restricted access to a small group of vetted partners per government request before rolling out the models publicly [1, 2, 3].
GPT-5.6 Sol is priced at $5 per million input tokens and $30 per million output tokens, with Terra roughly half that cost and Luna the cheapest option, priced at $1 and $6 respectively for input and output tokens [4]. OpenAI states Sol is 54% more token efficient than competing models and cheaper than some rivals. CEO Sam Altman said, "GPT-5.6 Sol is not only the best model in the world for most people but also 54 per cent more token efficient on tasks than competing models." [3]
Alongside the GPT-5.6 series, OpenAI introduced ChatGPT Work, an AI agent powered by GPT-5.6 combining ChatGPT with coding tools for non-coders and enterprise users. Product Manager Ty Geri said it enables coding solutions across industries with speed and cost advantages over pricier models: "Our 5.6 model is competitive with models that are far, far more expensive at twice the speed and much, much cheaper." [6]
The US government requires frontier AI models to undergo regulatory review before broad release as part of an executive order, a process that influenced OpenAI’s and competitor Anthropic’s rollout timelines [1, 2, 3]. Anthropic faced export controls lifted in late June, allowing resumed access to their AI models [1, 2, 3].
Chinese users continue to access GPT-5.6 via VPNs despite blocks, noting its efficiency but higher price compared to local AI models like Zhipu AI’s GLM-5.2 and DeepSeek V4, which are priced significantly lower [4, 7].
OpenAI plans a gradual global rollout of GPT-5.6 and ChatGPT Work on desktop, web, and mobile platforms, prioritizing availability for paid users first [6, 8, 9]. Sam Altman concluded the launch event with "Happy building," after describing the collaborative process with government agencies in refining the model [3].
