FRONTIER LABInvestigateNOW
Improving GPT‑5.6 Sol in ChatGPT—and expanding access to GPT-5.6 Luna for free users
OpenAI News
Factual evidence
What the source reports
OpenAI has updated ChatGPT with its improved GPT-5.6 Sol model and expanded free user access to GPT-5.6 Luna.
Open sourceOneBench interpretation
Institutional assessment
Hype caution
The announcement frames consumer tier access as a milestone without publishing standardized enterprise benchmarks or API availability details.