GPT-6 Luna
OpenAI's closed GPT-6 Luna reasoning model is available in the API, ChatGPT Work and Codex, with desktop access for Free and Go users. It targets high-volume tasks while the company reports stronger coding and computer-use performance than its prior Luna tier at lower cost.
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Why this model scores 84.0
Officially released, inexpensive, widely accessible Luna has substantial coding and tool-use capability, but remains below Sol and Astra on breadth. Its scale of deployment increases exposure and misuse opportunity; stronger reported alignment moderates control difficulty. Benchmarks are mainly vendor-reported.
News tied to GPT-6 Luna
The model score of 84.0 rates this model's risk profile. The overall Doom Index of 67.9 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
OpenAI releases GPT-6 Sol and Luna for agentic work at lower cost
OpenAI released GPT-6 Sol and GPT-6 Luna in its API, ChatGPT Work and Codex. The company reports stronger long-horizon coding, professional-work and computer-use evaluations than their GPT-5.6 predecessors while halving listed API prices. The models extend GPT-6-class agent capability to more routine and high-volume workflows, though benchmark results do not establish real-world loss of control.
- Full item contribution
- +0.15
- GPT-6 Luna equal share
- +0.08
Model score history
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R1
Doom Score 84.0
New exact GPT-6 Luna version verified in OpenAI's dated release and API catalogue.
23 Sept 2026