OpenAI has introduced GPT-5.6, a new model family available in ChatGPT, Codex, and the OpenAI API. The release adds named model variants, new Codex access tiers, and a beta multi-agent capability for API users, according to OpenAI and corroborating technology press reports.
OpenAI launched GPT-5.6, making the new model family available across ChatGPT, Codex, and the OpenAI API, according to the company’s announcement and reporting from TechCrunch.
OpenAI says GPT-5.6 is its latest frontier model family and is now available in ChatGPT, Codex, and the API. TechCrunch reported that the launch took place on July 9 and described the release as a new family of models from OpenAI.
The company’s own product page says GPT-5.6 is intended to scale across different usage needs, with availability spanning consumer chat, software development workflows, and developer integrations. OpenAI also says the release includes model options named Sol, Terra, and Luna, a naming structure also reported by Notebookcheck in its coverage of the launch.
OpenAI’s Help Center article for “GPT-5.6 in ChatGPT” provides additional product details, including access requirements for Codex and the minimum Codex versions needed to use GPT-5.6. The Help Center also says Codex offers Terra to Free and Go users, while paid tiers can access Sol, Terra, and Luna.
A notable part of the release is GPT-5.6 support in Codex, OpenAI’s coding product. OpenAI says GPT-5.6 is available in Codex, and Notebookcheck reports that GPT-5.6 became generally available in Codex on July 9.
OpenAI’s announcement says Codex includes an “ultra mode” for Plus and higher plans. Notebookcheck separately corroborates that Codex Plus users can access ultra mode. OpenAI has not, in the provided source excerpts, fully detailed the technical implementation of ultra mode, so it is best understood as a product access mode rather than a separately specified model architecture.
The Help Center article also describes how GPT-5.6 access differs by plan. According to OpenAI, Free and Go users can use Terra in Codex, while paid tiers can use Sol, Terra, and Luna. That tiering suggests OpenAI is positioning GPT-5.6 not as a single uniform experience, but as a family with different model options mapped to account types and product contexts.
OpenAI’s GPT-5.6 announcement also says the model is available through the API and includes beta support for multi-agent use. The company’s source material does not provide extensive detail in the supplied excerpt about how the beta works, what orchestration patterns are supported, or what limits apply.
For developers, the practical significance is that GPT-5.6 is not limited to ChatGPT or Codex. TechCrunch reports that OpenAI made the release available across ChatGPT, Codex, and the OpenAI API, which means developers can begin evaluating the model family in their own applications subject to OpenAI’s access rules and documentation.
The strongest confirmed points come directly from OpenAI: GPT-5.6 is available in ChatGPT, Codex, and the API; Codex has an ultra mode for Plus and higher; API users have access to multi-agent beta support; and model options include Sol, Terra, and Luna. OpenAI’s Help Center confirms plan-based Codex access details and minimum Codex version requirements.
Notebookcheck corroborates the July 9 general availability of GPT-5.6 in Codex and the availability of ultra mode for Codex Plus users. TechCrunch corroborates the broader launch across ChatGPT, Codex, and the API.
Claims circulating on social media about long-running GPT-5.6 coding sessions, major refactors, or security audits should be treated as individual user anecdotes unless backed by reproducible benchmarks or official documentation. The source-backed news is narrower but still significant: OpenAI has formally expanded its model lineup with GPT-5.6 and is distributing it across its consumer, coding, and developer platforms.
OpenAI launched GPT 5.6, making the new model family available across ChatGPT, Codex, and the OpenAI API, according to the company’s announcement and reporting from TechCrunch.
GPT 5.6 arrives in OpenAI’s main products OpenAI says GPT 5.6 is its latest frontier model family and is now available in ChatGPT, Codex, and the API.
TechCrunch reported that the launch took place on July 9 and described the release as a new family of models from OpenAI.
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