LLM/AI Changelog

We’ve upgraded ChatGPT search for all users to provide even more comprehensive, up-to-date responses. In testing, we found users preferred these search improvements over our previous search experience.
Improved quality
Smarter responses that are more intelligent, are better at understanding what you’re asking, and provide more comprehensive answers.Handles longer conversational contexts, allowing better intelligence in longer conversations.
Improved search capability and instruction following
More robust ability to follow instructions, especially in longer conversations, significantly reducing repetitive responses.Capability to run multiple searches automatically for complex or difficult questions.Search the web using an image you’ve uploaded.
Known limitations
Users may notice longer responses with this new search experience.In some cases, a “chain of thought” reasoning will show up unexpectedly for simple queries. A fix for this is rolling out to users shortly.ChatGPT may still make occasional mistakes - please double check responses.

Creators can now choose from the full set of ChatGPT models (GPT-4o, o3, o4-mini and more) when building Custom GPTs—making it easier to fine-tune performance for different tasks, industries, and workflows. Creators can also set a recommended model to guide users.
Key details:
GPTswithout Custom Actionscan use the model picker to select from all models available to the user.GPTswith Custom Actionscurrently support GPT-4o and 4.1Available onwebfor users onPlus, Pro and Teamplans.Enterprise and Edu rollout coming soon.

Starting today, we’re adding several updates to projects in ChatGPT to help you do more focused work. These updates are available for Plus, Pro, and Team users.
Deep research and voice mode supportImprovements to memory to reference past chats in a project*Sharing chats from projectsStarting a new project directly from a chatUpload files and access model selector on mobile
Learn moreabout projects.
*Memory improvements are available for Plus and Pro users.

Like o1-pro, o3-pro is a version of our most intelligent model, o3, designed to think longer and provide the most reliable responses. Since the launch of o1-pro, users have favored this model for domains such as math, science, and coding—areas where o3-pro continues to excel, as shown in academic evaluations. Like o3, o3-pro has access to tools that make ChatGPT useful—it can search the web, analyze files, reason about visual inputs, use Python, personalize responses using memory, and more. Because o3-pro has access to tools, responses typically take longer than o1-pro to complete. We recommend using it for challenging questions where reliability matters more than speed, and waiting a few minutes is worth the tradeoff.
In expert evaluations, reviewers consistently prefer o3-pro over o3 in every tested category and especially in key domains like science, education, programming, business, and writing help. Reviewers also rated o3-pro consistently higher for clarity, comprehensiveness, instruction-following, and accuracy.
Academic evaluations show that o3-pro consistently outperforms both o1-pro and o3.
To assess the key strength of o3-pro, we once again use our rigorous "4/4 reliability" evaluation, where a model is considered successful only if it correctly answers a question in all four attempts, not just one:
o3-pro is available in the model picker for Pro and Team users starting today, replacing o1-pro. Enterprise and Edu users will get access the week after.
As o3-pro uses the same underlying model as o3, full safety details can be found in theo3 system card.
Limitations
At the moment, temporary chats are disabled for o3-pro as we resolve a technical issue.
Image generation is not supported within o3-pro—please use GPT-4o, OpenAI o3, or OpenAI o4-mini to generate images.
Canvas is also currently not supported within o3-pro.

We're upgrading Advanced Voice in ChatGPT for paid users with significant enhancements in intonation and naturalness, making interactions feel more fluid and human-like. When we first launched Advanced Voice, it represented a leap forward in AI speech—now, it speaks even more naturally, with subtler intonation, realistic cadence (including pauses and emphases), and more on-point expressiveness for certain emotions including empathy, sarcasm, and more.
Voice also now offers intuitive and effective language translation. Just ask Voice to translate between languages, and it will continue translating throughout your conversation until you tell it to stop or switch. It’s ready to translate whenever you need it—whether you're asking for directions in Italy or chatting with a colleague from the Tokyo office. For example, at a restaurant in Brazil, Voice can translate your English sentences into Portuguese, and the waiter’s Portuguese responses back into English—making conversations effortless, no matter where you are or who you're speaking with.
This upgrade to Advanced Voice is available for all paid users across markets and platforms—just tap the Voice icon in the message composer to get started.
This update is in addition to improvements we made earlier this year to ensure fewer interruptions and improved accents.
Known Limitations
In testing, we've observed that this update may occasionally cause minor decreases in audio quality, including unexpected variations in tone and pitch. These issues are more noticeable with certain voice options. We expect to improve audio consistency over time.
Additionally, rare hallucinations in Voice Mode persist with this update, resulting in unintended sounds resembling ads, gibberish, or background music. We are actively investigating these issues and working toward a solution.

ChatGPT Team, Enterprise, and Edu customers globally can use connectors in deep research, as well as Pro and Plus users (excluding users in Switzerland, EEA, and the UK) to generate long-form, cited responses that include your company’s internal tools.
Supported connectors: Google Drive, SharePoint, Dropbox, Box, Outlook, Gmail, Google Calendar, Linear, GitHub, HubSpot, and TeamsCombines internal + web sources for synthesis
Learn more aboutConnectors in ChatGPT.

Admins and users can now build and deploy custom connectors to proprietary systems using Model Context Protocol (MCP).
Requires a remote MCP serverAvailable only in deep researchAdmin-published connectors appear in the connector list for all users
Learn more aboutbuilding custom connectors with MCP. For Team, Enterprise, and Edu plans, only admins can build and deploy custom connectors.

Memory improvements are starting to roll out to Free users. In addition to the saved memories that were there before, ChatGPT now references your recent conversations to deliver responses that feel more relevant and tailored to you.
Free users must be logged in and on up-to-date apps (iOS/Android v1.2025.147+).
Opt‑in reminders
Free users in EEA (EU + UK), Switzerland, Norway, Iceland, or Liechtenstein will see a prompt to enable this setting or can visitSettings>Personalization>Memory>Reference chat historyto enable.Outside the European regions listed above, all Free users that have memory enabled will receive the upgrade automatically.
You can turn off memory anytime in settings. Learn more in ourMemory FAQ.

Since its launch in the API in April, GPT-4.1 has become a favorite among developers—by popular demand, we’re making it available directly in ChatGPT.
GPT-4.1 is a specialized model that excels at coding tasks. Compared to GPT-4o, it's even stronger at precise instruction following and web development tasks, and offers an alternative to OpenAI o3 and OpenAI o4-mini for simpler, everyday coding needs.
Starting today, Plus, Pro, and Team users can access GPT-4.1 via the "more models" dropdown in the model picker. Enterprise and Edu users will get access in the coming weeks. GPT-4.1 has the same rate limits as GPT-4o for paid users.

GPT-4.1 mini is a fast, capable, and efficient small model, delivering significant improvements compared to GPT-4o mini—in instruction-following, coding, and overall intelligence. Starting today, GPT-4.1 mini replaces GPT-4o mini in the model picker under "more models" for paid users, and will serve as the fallback model for free users once they reach their GPT-4o usage limits. Rate limits remain the same.
Evals for GPT-4.1 and GPT-4.1 mini were originally shared in theblog postaccompanying their API release. They also went through standard safety evaluations. Detailed results are available in the newly launchedSafety Evaluations Hub.

ChatGPT deep research with Sharepoint and OneDrive is available globally to Team users. It is also gradually rolling out to Plus and Pro users, except for those in the EEA, Switzerland, and the UK. Enterprise user access will be announced at a later date.
See:Connecting SharePoint and Microsoft OneDrive to ChatGPT deep research

Enhanced memory rolling out to all Plus and Pro users (including the EU). The new memory features are available in the EEA (EU + UK), Switzerland, Norway, Iceland, or Liechtenstein. These features areOFF by defaultand must be enabled inSettings > Personalization > Reference  Chat  History.
Plan differences
•Saved  memoriesandChat historyare offered only to Plus and Pro accounts.
• Free‑tier users have access toSaved  memoriesonly.
Opt‑in reminders
• Outside the European regions listed above, all Plus and Pro accounts that have memory enabled will receive the upgrade automatically.
• If you previously opted out of memory, ChatGPT will not reference past conversations unless you opt back in.
SeeMemory FAQ.

We've removed the row of individual tool icons from the mobile composer and replaces it with the new sliders‑style icon to open theSkillsmenu; tapping that button opens a bottom‑sheet menu where users can choose tools like Create an image or Search the web.
No tools are deprecated—access is simply consolidated to clear space and reduce on‑screen clutter.

We've reverted the most recent update to GPT-4o due to issues with overly agreeable responses (sycophancy).
We’re actively working on further improvements. For more details, check out ourblog postexplaining what happened and our initial findings, andthis blog postwhere we expand on what we missed with sycophancy and the changes we're going to make going forward.

We’re making additional improvements to GPT-4o, optimizing when it saves memories and enhancing problem-solving capabilities for STEM. We’ve also made subtle changes to the way it responds, making it more proactive and better at guiding conversations toward productive outcomes. We think these updates help GPT-4o feel more intuitive and effective across a variety of tasks–we hope you agree!

Today, we’re releasing OpenAIo3ando4-mini,the latest in our o-series of models trained to think for longer before responding. These are the smartest models we’ve released to date, representing a step change in ChatGPT's capabilities for everyone from curious users to advanced researchers. For the first time, our reasoning models can agentically use and combine every tool within ChatGPT—this includes searching the web, analyzing uploaded files and other data with Python, reasoning deeply about visual inputs, and even generating images. Critically, these models are trained to reason about when and how to use tools to produce detailed and thoughtful answers in the right output formats, typically in under a minute, to solve more complex problems. This allows them to tackle multi-faceted questions more effectively, a step toward a more agentic ChatGPT that can independently execute tasks on your behalf. The combined power of state-of-the-art reasoning with full tool access translates into significantly stronger performance across academic benchmarks and real-world tasks, setting a new standard in both intelligence and usefulness.

All images you create with ChatGPT are now automatically saved to a newLibraryin the sidebar, giving you one place to browse, revisit, and reuse your work without digging through past conversations. The Library is rolling out today on Web, iOS, and Android for Free, Plus, and Pro users (Enterprise / Edu support coming soon). For now, it displays images generated with 4o Image Generation while we backfill older creations, and you can remove an image by deleting the conversation where it was made.

Sunsetting GPT‑4 in ChatGPT
Effective  April  30,  2025, GPT‑4 will be retired from ChatGPT and fully replaced by GPT‑4o.
GPT‑4o is our newer, natively multimodal model. In head‑to‑head evaluations it consistently surpasses GPT‑4 in writing, coding, STEM, and more.
Recent upgrades have further improved GPT‑4o’s instruction following, problem solving, and conversational flow, making it a natural successor to GPT‑4.
GPT-4 will still be available in the API.
GPT‑4 marked a pivotal moment in ChatGPT’s evolution. We’re grateful for the breakthroughs it enabled and for the feedback that helped shape its successor. GPT‑4o builds on that foundation to deliver even greater capability, consistency, and creativity.

We’ve made improvements to GPT-4o—it now feels more intuitive, creative, and collaborative, with enhanced instruction-following, smarter coding capabilities, and a clearer communication style.
Smarter problem-solving in STEM and coding:
GPT-4o has further improved its capability to tackle complex technical and coding problems. It now generates cleaner, simpler frontend code, more accurately thinks through existing code to identify necessary changes, and consistently produces coding outputs that successfully compile and run, streamlining your coding workflows.
Enhanced instruction-following and formatting accuracy:
GPT-4o is now more adept at following detailed instructions, especially for prompts containing multiple or complex requests. It improves on generating outputs according to the format requested and achieves higher accuracy in classification tasks.
“Fuzzy” improvements:
Early testers say that the model seems to better understand the implied intent behind their prompts, especially when it comes to creative and collaborative tasks. It’s also slightly more concise and clear, using fewer markdown hierarchies and emojis for responses that are easier to read, less cluttered, and more focused. We're curious to see if our users also find this to be the case.
This model is now available in ChatGPT and in the API as the newest snapshot of chatgpt-4o-latest. We plan to bring these improvements to a dated model in the API in the coming weeks.

1. In-line message error retries: If you encounter a message error, you can retry or just continue chatting in the same conversation.
2. o1 and o3-mini now offer Python-powered data analysis in ChatGPT: You can now ask these models to perform tasks like running regressions on test data, visualizing complex business metrics, and conducting scenario-based simulations.
3. Conversation Drafts: Unsubmitted messages in your message prompt will now be saved.
4. New UI for Temporary Chats: We’ve made accessing and viewing these private conversations more clear.

GeneralGPT-4.5was released to users on the Pro plan in ChatGPT.The temporary chat icon is now in top bar to make the temporary chat experience more accessible and clear.iOSLong press to selecttext on iOS and moved the message quick actions to always be visible below the message:Bug fixes and small improvements in the1.2025.056 iOS release.A setting to allow users to auto-submit transcriptions.OFF by default.AndroidImproved error handling for Play Integrity errors.

1. iOS widget (see below):
2. Text selection improvements: you can now select text across horizontal rulers.3. Performance improvements: Improved model header loading behavior. Conversation history and GPTs show up faster.4. Bug fix for logged-out users: 401s when dismissing tooltips 401s logging out users on Android.

Set ChatGPT as default search engine in Safari.Confirmation dialog for logging out (iOS, web).Improved Android conversation parsing performance.iOS performance fixes.Updated launch animations and composer design on Android.Whisper (ChatGPT's voice-to-text feature) now shows a text preview of dictated text after recording:

Users can now share a Canvas asset such as rendered React/HTML code, document, or code with another user, similar to how you share a conversation. You can do this from the Canvas toolbar when Canvas is open.
For more details about the canvas feature in ChatGPT, check out the following Help Center article!

We've updated custom instructions to make it easier to customize how ChatGPT responds to you. With the new UI, you can tell ChatGPT the traits you want it to have, how you want it to talk to you, and any rules you want it to follow.
If you're already using custom instructions, this won't change your current settings.
The new UI is rolling out now onhttp://chatgpt.comand desktop on Windows, and is coming to mobile and desktop on MacOS in the next few weeks. Available soon to ChatGPT users in the EU, Norway, Iceland, Liechtenstein, and Switzerland.

Today we’re rolling out a beta version of tasks—a new way to ask ChatGPT to do things for you at a future time. Whether it's one-time reminders or recurring actions, tell ChatGPT what you need and when, and it will automatically take care of it.
Scheduled tasks is in early beta for Plus, Pro, and Teams. Eventually this will be available to anyone with a ChatGPT account.
For details see Scheduled tasks in ChatGPT.

Projects provide a new way to group files and chats for personal use, simplifying the management of work that involves multiple chats. You can set custom instructions and upload files in your Projects, and any conversations in your Project share context with your uploaded files and custom instructions. Chats in Projects use GPT-4o and support the following features:
CanvasAdvanced data analysisDALL•ESearch
ChatGPT Projects are available to all Plus, Team, and Pro users.

Today we started rolling out two updates to voice mode in ChatGPT:
Santa voice:You can now chat with Santa in ChatGPT! Until early January, you can find Santa in the list of available voices in settings or by tapping on a snowflake icon. We are rolling out Santa globally to all logged in users today, and you can chat with Santa everywhere you use voice mode.
The first time you chat with Santa, your advanced voice limit will reset one time. So, if you’ve already used up your advanced voice limit for the day or the month (based on your subscription plan), you can still chat with Santa for the first time using advanced voice.
Video and screenshare:In our latest mobile apps, we are starting to roll out real-time video, screen share, and image upload capabilities in advanced voice. We expect to complete this rollout to all Team and most Plus and Pro users, except for those in the European Union, Switzerland, Iceland, Norway, and Liechtenstein, over the next week. Video and screen share are subject to daily usage limits for all plans, and image uploads are subject to ChatGPT vision message limits.
Use the controls at the bottom of the screen, like the camera button below, to get started. You can find screen share and image upload controls under the “...” menu at the bottom of the screen.

Today we made Canvas available in 4o by default for all users, Free and Paid. Additionally, we launched a number of new capabilities for canvas, including:
Canvas in GPTs: Canvas can now be used with GPTs when enabled in the GPT creator. This toggle will be enabled for newly created GPTs by default.
Python code execution: You can now execute Python code in a canvas. ChatGPT will take a pass on fixing bugs in your code and provide comments on errors.​Canvas shortcut: You can now paste content into ChatGPT and instantly open it in canvas via a shortcut in the upper right corner of the composer.Canvas in Toolbox: Canvas has been added as an option in the toolbox.

Today we made Canvas available in 4o by default for all users, Free and Paid. Additionally, we launched a number of new capabilities for canvas, including:
Canvas in GPTs: Canvas can now be used with GPTs when enabled in the GPT creator. This toggle will be enabled for newly created GPTs by default.
Python code execution: You can now execute Python code in a canvas. ChatGPT will take a pass on fixing bugs in your code and provide comments on errors.Canvas shortcut: You can now paste content into ChatGPT and instantly open it in canvas via a shortcut in the upper right corner of the composer.Canvas in Toolbox: Canvas has been added as an option in the toolbox.

We are rolling out the following updates over the next two weeks to all ChatGPT users.
Sidebar redesign
New floating mode added with soft dismiss behaviorRecent conversations are now limited in the sidebar, with an unlimited infinite scroll flyout for all conversationsRecent GPTs & Pinned GPT's are now displayed below conversationsSettings are now always in the bottom of the sidebarA small settings icon was added in larger viewports when the sidebar is not openNew transitions were added to create a more immersive feel
Other updates for ChatGPT on Web
The core underpinnings of the site were revamped, offering much better support for a larger variety of devices and sizesInitiating a new conversation now scrolls it into view at the top of the screenInitiating a new conversation no longer auto scrolls to the bottom while the message is generatingThe sidebar when pinned can now stay open with an active Canvas if enough space is availableA new composer bar layout now fades content underneath it as you scroll with an updated look & feelThe new chat button has been moved to the left of the Model Picker to be easier to accessThe system icon in conversations has been removed to make additional horizontal spaceDall-E focused view has an updated layoutGPT Creator has an updated layout
Improved Mobile Web Experience
The experience with the on-screen keyboard on mobile devices has been greatly improved across iOS & Android devicesThe new sidebar is always in floating mode and auto closes when switching threadsWe no longer focus the composer on mobile web when switching conversationsAn issue causing scroll to get stuck in certain situations should be resolved

Starting today, we’re beginning to roll out Advanced Voice Mode on web (already available on mobile and desktop apps). You can now start a voice chat on chatgpt.com on your desktop and have real-time, natural conversations with ChatGPT while doing tasks like shopping, planning, writing, and brainstorming.
We’re starting to roll out to all paid (Plus, Team, Enterprise, and Edu) users today, and expect it to take a few days.

We’re introducing GPT-4o mini, the most capable and cost-efficient small model available today. GPT-4o mini surpasses GPT-3.5 Turbo and other small models on academic benchmarks across both textual intelligence and multimodal reasoning and supports the same range of languages as GPT-4o. It also demonstrates strong performance in function calling, which can enable developers to build applications that fetch data or take actions with external systems, and improved long-context performance compared to GPT-3.5 Turbo.
You can read more about GPT-4o mini in the blog announcement here.

Today, we’re starting to roll out enhancements to data analysis:
Upload the latest file versions directly from Google Drive, Microsoft OneDrive Personal, and Microsoft OneDrive including SharepointInteract with tables and charts in a new expandable viewCustomize and download presentation-ready charts and documents
Data analysis improvements are available in our new flagship model, GPT-4o, for ChatGPT Plus, Team, and Enterprise users.

GPT-4o is our newest flagship model that provides GPT-4-level intelligence that is much faster and improves on its capabilities across text, voice, and vision. Currently, only the new text and image capabilities have been rolled out. You can read more about the announcement here.
Plus users will have a message limit that is up to 5x greater than free users, and Team and Enterprise users will have even higher limits.

We’re testing memory with ChatGPT. Remembering things you discuss across all chats saves you from having to repeat information and makes future conversations more helpful.
You're in control of ChatGPT's memory. You can explicitly tell it to remember something, ask it what it remembers, and tell it to forget conversationally or through settings. You can also turn it off entirely.
We are rolling out to a small portion of ChatGPT free and Plus users this week to learn how useful it is. We will share plans for a broader roll out soon.
You can read more about memory and controls here.

Discover what’s trending in the GPT Store
The store features a diverse range of GPTs developed by our partners and the community. Browse popular and trending GPTs on the community leaderboard, with categories like DALL·E, writing, research, programming, education, and lifestyle.
Explore GPTs at chatgpt.com/gpts.
Use ChatGPT alongside your team
We’re launching a new ChatGPT plan for teams of all sizes, which provides a secure, collaborative workspace to get the most out of ChatGPT at work.
ChatGPT Team offers access to our advanced models like GPT-4 and DALL·E 3, and tools like Advanced Data Analysis. It additionally includes a dedicated collaborative workspace for your team and admin tools for team management. As with ChatGPT Enterprise, you own and control your business data — we do not train on your business data or conversations, and our models don’t learn from your usage. More details on our data privacy practices can be found on our privacy page and Trust Portal.
You can learn more about the ChatGPT Team plan here.