OpenAI launches GPT-5.6 and ChatGPT Work globally
OpenAI has launched the GPT-5.6 model series, comprising Sol, Terra, and Luna, alongside ChatGPT Work. The global release follows a regulatory delay.
What happened?
On 10 July 2026, OpenAI launched its new GPT-5.6 model series, which includes the Sol, Terra, and Luna versions. Simultaneously, ChatGPT Work, a new agent designed for long-running tasks, was introduced. The models are available via ChatGPT, Codex, and the OpenAI API.
Key facts
| Lanseringsdatum | 10 juli 2026 |
|---|---|
| Modellbeteckningar | GPT-5.6 Sol, Terra, Luna |
| Ny tjänst | ChatGPT Work |
| Prestanda GPT-5.6 Sol | På par med Anthropic Mythos |
| Kostnad GPT-5.6 Terra | 2x billigare än GPT-5.5 |
”OpenAI released its 'strongest model yet' on Thursday, after its rollout was delayed at the U.S. government's request.”
”GPT-5.6 Sol its 'strongest model yet,' with benchmarks showing it largely on par with Anthropic's latest Mythos model.”
”GPT-5.6 Terra, meanwhile, brings performance that's roughly equal to GPT-5.5, but '2x cheaper,' OpenAI says.”
Why it matters
GPT-5.6 Sol is described as OpenAI's "most powerful model to date" and is claimed to match the Anthropic Mythos model in performance. GPT-5.6 Terra provides performance on par with GPT-5.5 but at half the cost, while Luna is a cost-effective variant with robust capabilities. This broadens OpenAI's range of AI models for various use cases.
Who is affected?
The launch affects developers using OpenAI's API, as well as users of ChatGPT and Codex. Companies implementing AI solutions gain access to more powerful and cost-effective models. The US government was involved in delaying the launch due to national security considerations.
Impact on the EU
The launch is global, meaning GPT-5.6 and ChatGPT Work will be available to users and companies within the EU. However, potential future regulatory requirements from the EU, such as the AI Act, may influence how the models are permitted to be used or implemented in the region.
What else you should know
The launch of GPT-5.6 was originally delayed following a request from the White House, citing national security concerns. OpenAI stated that it spent several weeks addressing these issues before the launch could proceed.
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