When Did ChatGPT Come Out? Release Date and Full Timeline
By the Chatgbot Team · Published July 22, 2026
ChatGPT came out on November 30, 2022. OpenAI released it that day as a free research preview, open to anyone with an email address, and it passed one million users within about five days.
If you only needed the date, that is the answer. But the launch itself is a genuinely interesting story, and the years since then have moved fast. This guide covers when ChatGPT was released, who built it, how the models evolved from GPT-3.5 to GPT-5.6, and where things stand in 2026.
The launch: November 30, 2022
ChatGPT went live on November 30, 2022, at chat.openai.com. It ran on a model called GPT-3.5, a tuned version of technology OpenAI had already been offering to developers for more than a year. The chat interface was the new part. For the first time, anyone could talk to a large language model in plain English, with no coding required.
Growth was unlike anything the industry had seen. ChatGPT reached one million users in roughly five days. By January 2023, analysts estimated it had around 100 million monthly users, which made it the fastest growing consumer app in history at that point. For comparison, TikTok needed about nine months to reach 100 million users, and Instagram needed roughly two and a half years.
The irony is that OpenAI expected a quiet release. The team reportedly treated it as a low key research preview and was surprised by the response. Servers strained under demand, and the 'ChatGPT is at capacity right now' error page became an early meme.
Who created ChatGPT?
ChatGPT was created by OpenAI, an AI research company based in San Francisco. OpenAI was founded in 2015 by a group that included Sam Altman, Greg Brockman, and Ilya Sutskever, along with Elon Musk, who left the board in 2018, years before ChatGPT existed.
Microsoft became OpenAI's most important partner, investing billions of dollars and providing the cloud computing that trains and runs the models. If you want the full picture of the company's unusual structure and investors, see our breakdown of who owns ChatGPT.
The name, by the way, is short for Chat Generative Pre-trained Transformer. We unpack that mouthful in what GPT stands for.
The model timeline in plain terms
ChatGPT the product has stayed recognizable since 2022: a chat box you type into. The models behind it are what changed. Here is the short version.
| Period | Model era | What it meant |
|---|---|---|
| November 2022 | GPT-3.5 | The launch model. Fluent and fast, but it made frequent factual mistakes. |
| March 2023 | GPT-4 | A big jump in reasoning. It could pass professional exams and understand images. |
| 2024 | GPT-4o era | Speed and multimodality. Natural voice conversations became normal. |
| 2025 | GPT-5 era | Reasoning and everyday chat folded into one system, with more agent-like behavior. |
| Today (2026) | GPT-5.6 | The current generation, offered in Sol, Terra, and Luna tiers. |
A few dates in that table are worth anchoring. GPT-4 arrived on March 14, 2023, about three and a half months after launch, shortly after the paid ChatGPT Plus subscription appeared in February 2023. From 2024 onward the pace blurred, since updates rolled out continuously rather than as single big events, so exact dates matter less in that stretch. The line leads to today's GPT-5.6, which we cover in detail in our GPT-5.6 guide.
How ChatGPT changed everything around it
The launch triggered the biggest product race in modern tech. Google reportedly declared an internal 'code red' within weeks and shipped Bard in early 2023, which later became Gemini. Anthropic brought Claude to the public in 2023. Elon Musk's xAI launched Grok later that year, and China's DeepSeek shook the market with strong models of its own. If you want to keep the players straight, see AI models explained.
The effects went well beyond chatbots. Search engines added AI answers, office suites gained writing copilots, phones shipped with built-in assistants, and 'prompt' entered everyday vocabulary. Whole product categories exist today because a research preview went viral in late 2022.
Fun facts about the launch
- ChatGPT was reportedly assembled in about two weeks, built on models OpenAI already had sitting in the lab.
- It launched with no ads, no press event, and little more than a tweet from Sam Altman.
- OpenAI insiders later said the name was nearly something clunkier, along the lines of 'Chat with GPT-3.5', before being shortened just ahead of release.
- Demand crashed the service so often in the early months that checking whether ChatGPT is down became a daily habit for users.
- The launch is often called AI's 'iPhone moment', the point where a technology decades in the making suddenly felt obvious to everyone.
Where things stand in 2026
More than three years after launch, ChatGPT remains one of the most used apps on the planet, but it no longer stands alone. Claude, Gemini, Grok, DeepSeek, and Perplexity all have serious followings, and each leads in different kinds of tasks.
The question has shifted as a result. In 2022 people asked what ChatGPT was. In 2026 they ask which model to use for which job, and increasingly the honest answer is more than one.
Frequently asked questions
When did ChatGPT come out?
ChatGPT came out on November 30, 2022. OpenAI released it as a free research preview, and it reached one million users within about five days.
When was ChatGPT released to the public?
ChatGPT was public from day one. The November 30, 2022 release was open to everyone, not a closed beta. The paid ChatGPT Plus tier followed in February 2023.
What is the ChatGPT release date for GPT-4?
GPT-4 was released inside ChatGPT on March 14, 2023, about three and a half months after the original launch. At first it was available to ChatGPT Plus subscribers.
Who created ChatGPT?
OpenAI created ChatGPT. The company was founded in 2015 by a group that included Sam Altman, and Microsoft is its biggest backer.
Use every generation's successors in one app
The race that started with the 2022 launch produced today's lineup: GPT-5.6 from OpenAI, Claude from Anthropic, Gemini from Google, Grok from xAI, DeepSeek, and more. Chatgbot puts all of them in one app under a single subscription, so you can ask the same question to several models, compare the answers, and switch mid-conversation. Try it at chatgbot.ai and use the descendants of the whole timeline in one place.