OpenAI widens access to its cutting-edge GPT-5.6 models

OpenAI is publicly releasing its GPT-5.6 Sol, Terra and Luna models on Thursday. The AI firm announced the models last month and rolled them out first, in a limited way, to a handful of government-approved organizations. CEO Sam Altman said Thursday that GPT-5.6 Sol is "as good or better" than competitors' offerings, and that it's 54% more token efficient on agentic coding tasks. Rival Anthropic just restored access to its own latest models, Claude Fable 5 and Mythos 5, after a high-profile battle with the White House.

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OpenAI widens access to its cutting-edge GPT-5.6 models

OpenAI is publicly releasing its GPT-5.6 Sol, Terra, and Luna models on Thursday. The company had announced the models last month and initially provided limited access to a select group of government-approved organizations.

CEO Sam Altman highlighted the capabilities of the new models during the rollout. He stated that GPT-5.6 Sol performs as well as or better than offerings from competitors.

Altman also emphasized the efficiency gains of the new model. GPT-5.6 Sol is reportedly 54% more token efficient on agentic coding tasks compared to previous versions.

The release comes at a dynamic time in the AI industry. Rival Anthropic recently restored access to its latest models, Claude Fable 5 and Mythos 5, following negotiations with the White House.

OpenAI’s move to make these advanced models widely available marks another significant step in the rapidly evolving AI landscape. The company continues to push boundaries in both performance and accessibility.

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