Separate Limits Remain for Image Generation, Voice Mode, and Prompts With Files

OpenAI will stop enforcing rate limits on text-only prompts for free and Go tier ChatGPT accounts starting next week, allowing unlimited text chats. Separate limits remain for image generation, voice mode, and prompts with files or images. GPT-5.6 Luna, the smallest model in the new GPT-5.6 family, becomes the default for these tiers this week, replacing GPT-5.5 Instant.

A new "Think" button lets users prompt Luna to take extra time, with no limit for text chats unless combined with other features. Plus and Pro users get an updated GPT-5.6 Sol optimized for everyday conversations, plus a slider to control how much "thought" ChatGPT applies. OpenAI said the change is "a concrete step toward more abundant intelligence" and noted a recent report suggested a breakthrough in reducing inference costs.