OpenAI Removes Text Chat Limits for Free ChatGPT Users, Upgrades Models Across Tiers

Aug 6, 2026

OpenAI announced major upgrades to ChatGPT on August 6, 2026, removing daily text chat limits for Free and Go tier users starting next week. The company is deploying GPT-5.6 Luna as the new default model for free tiers this week, alongside a new Think button for complex queries. Meanwhile, Plus and Pro subscribers receive an upgraded GPT-5.6 Sol model and a thinking slider for granular reasoning control. OpenAI claims internal tests show factual errors are 62% less common in Luna and 68% less common in Sol compared to GPT-5.5 Instant.

Free tier text limits removed

▪The removal of ChatGPT text chat limits is scheduled to roll out to Free and Go tier users next week.
▪OpenAI announced on August 6, 2026, that it is removing daily text-based chat rate limits for ChatGPT users on its Free and Go tiers.
▪Separate usage limits will continue to apply to ChatGPT features including file uploads, images, voice chats, and image generation for Free and Go tiers.

GPT-5.6 Luna default model

▪GPT-5.6 Luna is a lightweight model featuring a context window of 1,050,000 tokens and a knowledge base cutoff of February 16, 2026.
▪OpenAI is making GPT-5.6 Luna the new default model for Free and Go ChatGPT users, replacing the previous GPT-5.5 Instant model.
▪The rollout of the GPT-5.6 Luna model as the default experience for Free and Go ChatGPT users is scheduled to occur this week.

GPT-5.6 Sol paid upgrade

▪The GPT-5.6 Sol model variants used for Codex and ChatGPT Work remain unchanged by the August 6, 2026 consumer update.
▪OpenAI is upgrading the GPT-5.6 Sol model for ChatGPT Plus and Pro subscribers to deliver more focused, direct answers with tighter formatting.
▪The upgraded GPT-5.6 Sol model and a new thinking slider are available to Plus and Pro subscribers starting August 6, 2026.

Think button reasoning feature

▪ChatGPT Plus and Pro subscribers are receiving a new thinking slider to adjust the amount of reasoning the model applies to each response.
▪OpenAI is introducing a new Think button for Free and Go ChatGPT users to allow the AI more processing time for complex questions.
▪The new thinking slider for Plus and Pro users unifies the previously separate Instant and Thinking experiences into a single adjustable interface.

Factual error reduction rates

▪OpenAI internal tests reported that factual errors in the upgraded GPT-5.6 Sol model were 68% less common than in GPT-5.5 Instant.
▪OpenAI internal evaluations reported that factual errors were 62% less common with GPT-5.6 Luna compared to GPT-5.5 Instant.
▪OpenAI has not published the evaluation dataset or had outside laboratories reproduce its reported 62% and 68% factual error reduction rates.