OpenAI Releases GPT-5.6 in Three Variants, Launches ChatGPT Work for Nearly One Billion Users
Summary
OpenAI releases GPT-5.6 in three variants — Sol, Terra, and Luna — beating rival benchmarks at lower prices, while launching ChatGPT Work to nearly one billion users, bringing AI agents mainstream for the first time, as the US government delays broader rollout over software vulnerability concerns.
Key Points
- OpenAI releases GPT-5.6 in three variants — Sol, Terra, and Luna — outperforming Anthropic's Mythos and Fable on benchmarks while offering significantly lower pricing at $5 input / $30 output per 1M tokens.
- OpenAI launches ChatGPT Work, integrating Codex's agentic capabilities directly into the ChatGPT app across web and mobile, exposing nearly one billion users to AI agents for the first time alongside new features like ChatGPT Sites and an Ultra mode for power users.
- The US government delayed GPT-5.6's broader release to allow agencies and corporations to prepare for the model's ability to uncover software vulnerabilities, while OpenAI simultaneously deprecates its Atlas browser in favor of a Chrome extension.