OpenAI Begins GPT-6 Sol and Luna Launch With New Safety

OpenAI began rolling out GPT-6 Sol and Luna Tuesday across ChatGPT, Codex and its developer API, its second double-model release of the year.

Key Takeaways

OpenAI began rolling out GPT-6 Sol and Luna Tuesday across ChatGPT, Codex and its developer API
AI tracking account testingcatalog confirmed access to GPT-6 Sol and Luna spread to users
OpenAI published a policy document on outside testing of its frontier systems hours before the rollout
The rollout did not specify regions, plans, pricing, rate limits or differences between Sol and Luna

AI tracking account testingcatalog confirmed the launch, posting “OpenAI is rolling out GPT-6 Sol and GPT-6 Luna on ChatGPT, Codex, and APIs” as access spread to users.

Independent AI commentator Andrew Curran corroborated the timing, saying it mirrored an earlier dual-model pattern in the company’s release calendar. Full specifications were not published when users first reported access.

Hours earlier, OpenAI published a policy document on outside testing of its frontier systems.

Its priorities describe independent researchers probing models and safeguards before and after release, aiming for evaluations that are “rigorous, secure, and independent.” Third-party assessment means testing by researchers outside the developer, intended to catch blind spots an internal team might miss or downplay.

GPT-6 Sol And Luna: What Ships, What Remains Unknown

The rollout confirms availability across ChatGPT, Codex and the developer API, but not what ordinary users can expect day to day. The reported rollout does not specify regions, plans, pricing, rate limits or which capabilities distinguish Sol from Luna.

OpenAI has also not confirmed a broader public announcement beyond the rollout itself.

The company increasingly ships codenamed variants such as Sol and Luna rather than simple version bumps, splitting releases by use case, cost tier or latency profile instead of issuing one flagship upgrade. That lets it push improvements to narrower audiences, including coding tools inside Codex, without a full-scale rollout to every product simultaneously, but makes it harder to track what changed and when.

Also Read: OpenAI’s Latest V7 Gives Agents a Memory Layer on GPT-5.6

Its advisory group on mathematics, announced Monday, and a recent Palo Alto Networks security tie-up point to added external checks around releases once handled entirely in-house.

The Sol and Luna launch followed the same day it published its assessments framework, suggesting an effort to pair shipping speed with visible guardrails.

The framework offers no fixed timeline for when outside groups get access to a model like Sol before launch versus after. Whether they get meaningful access before the next release remains the open question.