--- title: OpenAI removes the daily limit on free ChatGPT chats and... description: OpenAI is removing daily text chat limits for free ChatGPT users and switching the default model from GPT-5.5 Instant to GPT-5.6 Luna, which produces 62% fewer... canonical: https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAI removes the daily limit on free ChatGPT chats and upgrades the default model to GPT-5.6 Luna | daily.dev og:description: OpenAI is removing daily text chat limits for free ChatGPT users and switching the default model from GPT-5.5 Instant to GPT-5.6 Luna, which produces 62% fewer... og:url: https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v og:image: https://api.daily.dev/og/posts/OiAtJz12v.png og:image:alt: OpenAI removes the daily limit on free ChatGPT chats and upgrades the default model to GPT-5.6 Luna og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenAI removes the daily limit on free ChatGPT chats and upgrades the default model to GPT-5.6 Luna **[The Next Web](https://daily.dev/sources/tnw)** · 3 min read · 1 upvotes · 0 comments ## Summary OpenAI is removing daily text chat limits for free ChatGPT users and switching the default model from GPT-5.5 Instant to GPT-5.6 Luna, which produces 62% fewer factual errors. Free users also gain a Think button for harder questions. Plus and Pro subscribers ($20 and $200/month) get a reasoning effort slider on GPT-5.6 Sol. The unlimited chats, Think button, and Sol slider roll out next week. ChatGPT surpassed one billion monthly users in May, and the move is seen as a strategy to retain free users against competitors like Claude and Gemini. OpenAI also notes new guardrails for users under 18, though removing usage limits raises broader safety questions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the default model for ChatGPT now that GPT-5.5 Instant has been replaced? GPT-5.6 Luna is now the default model for all ChatGPT users, replacing GPT-5.5 Instant. Luna is the lightweight member of the GPT-5.6 family that launched in July after government review, and OpenAI says it produces 62% fewer factual errors than Instant. The switch takes effect this week. _Developers building on top of ChatGPT should track model defaults like this on daily.dev before integrations break._ ### Are there still usage limits for free ChatGPT users? Free ChatGPT users no longer face a daily cap on text-only chats, though limits on image generation, file uploads, and voice tools still apply. Free users and $8/month Go subscribers also get a new Think button for deeper reasoning on harder questions. The unlimited chat rollout is scheduled for the week after Luna becomes default. _Anyone weighing free versus paid AI tools can follow changes like this on daily.dev._ ### What does the GPT-5.6 Sol reasoning slider do for Plus and Pro subscribers? The reasoning slider lets Plus ($20/month) and Pro ($200/month) subscribers dial GPT-5.6 Sol's reasoning effort from high to extra high to pro, depending on task difficulty. OpenAI also tuned Sol for everyday tasks like web research, writing, planning, and decision-making, aiming for more focused answers with less unnecessary formatting. _daily.dev helps developers evaluating AI model tiers keep up with changes like the Sol reasoning slider._ ## Similar posts on daily.dev - [OpenAI releases GPT-5.5 Instant, a new default model for ChatGPT](https://daily.dev/posts/openai-releases-gpt-5-5-instant-a-new-default-model-for-chatgpt-42iuszptn) · TechCrunch · 1 upvotes · 0 comments - [OpenAI rolls out GPT-5.5 Instant as default ChatGPT model, promises more accurate responses](https://daily.dev/posts/openai-rolls-out-gpt-5-5-instant-as-default-chatgpt-model-promises-more-accurate-responses-fwazgek3r) · The New Stack · 1 upvotes · 0 comments - [OpenAI gives 100,000 scientists free AI, and shows how](https://daily.dev/posts/openai-gives-100-000-scientists-free-ai-and-shows-how-pyma6bja0) · The Next Web · 0 upvotes · 0 comments --- Tags: [#llm](https://daily.dev/tags/llm), [#ai-agents](https://daily.dev/tags/ai-agents), [#openai](https://daily.dev/tags/openai), [#chatgpt](https://daily.dev/tags/chatgpt) [View this post on daily.dev](https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"OpenAI removes the daily limit on free ChatGPT chats and upgrades the default model to GPT-5.6 Luna","url":"https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v"},"datePublished":"2026-08-08T00:18:41.983Z","dateModified":"2026-09-14T07:04:38.008Z","description":"OpenAI is removing daily text chat limits for free ChatGPT users and switching the default model from GPT-5.5 Instant to GPT-5.6 Luna, which produces 62% fewer...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/91492593b638bb956f78eb3a06226d37?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/91492593b638bb956f78eb3a06226d37?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Next Web","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"The Next Web","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tnw","url":"https://daily.dev/sources/tnw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"llm,ai-agents,openai,chatgpt","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Next Web","item":"https://daily.dev/sources/tnw"},{"@type":"ListItem","position":3,"name":"OpenAI removes the daily limit on free ChatGPT chats and upgrades the default model to GPT-5.6 Luna"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/openai-removes-the-daily-limit-on-free-chatgpt-chats-and-upgrades-the-default-model-to-gpt-5-6-luna-oiatjz12v#faq","mainEntity":[{"@type":"Question","name":"What is the default model for ChatGPT now that GPT-5.5 Instant has been replaced?","acceptedAnswer":{"@type":"Answer","text":"GPT-5.6 Luna is now the default model for all ChatGPT users, replacing GPT-5.5 Instant. 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