Tools & releases
Oleksandr Kuzmenko, EditorPublished 3 min readAI-assisted · editor-reviewed
TL;DR
- Unlimited text chats for free users.
- New 'Think' button for complex questions.
- Upgraded GPT-5.6 Sol model for Plus and Pro users.
Model Updates and Rollout
The new GPT-5.6 Luna model powers the free experience as the default engine, replacing older checkpoints. Free users will also receive a new 'Think' button to invoke higher reasoning power for complex logic problems, while distinct limits remain active for files, images, voice, and image generation.
Plus and Pro Upgrades
Paid subscribers gain access to an upgraded GPT-5.6 Sol model engineered for quick web research, planning, and decision-making. Internal evaluations released by OpenAI indicate factual errors were reduced by 62% for GPT-5.6 Luna and 68% for GPT-5.6 Sol compared to prior baseline configurations.
#ChatGPT#GPT-5.6 Luna#GPT-5.6 Sol