Improving GPT-5.6 Sol in ChatGPT—and expanding access for free users

OpenAI has upgraded ChatGPT with a more accurate and reliable GPT-5.6 Sol model. Free users will see expanded access to these improvements, alongside unlimited everyday chats powered by the GPT-5.6 Luna model.
Key takeaways
- GPT-5.6 Sol model offers enhanced accuracy and consistency.
- Free ChatGPT users gain broader access to improved AI.
- Unlimited everyday chats now available with GPT-5.6 Luna.
- Focus on making advanced AI more accessible to all.
Why it matters
These enhancements mean more ChatGPT users, including those on the free tier, can leverage a more dependable AI for daily tasks. Better accuracy and consistency in responses can improve productivity and reduce the need for extensive prompt refinement.
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