OpenAI · AI assistant
ChatGPT
ChatGPT is OpenAI's AI assistant, released in November 2022, that answers questions, writes and analyses text, code, images and files, searches the web and carries out multi-step tasks on the web, iOS, Android, macOS and Windows.
- Made by
- OpenAI
- Type
- AI assistant
- Launched
- November 2022
Facts checked
What is ChatGPT?
ChatGPT combines conversation with built-in tools: web search, file and image analysis, image generation, voice conversations and agent features that can complete tasks in a browser on the user's behalf.
OpenAI's current models are the GPT-5.6 family, released in July 2026, and GPT-6 Astra, which OpenAI introduced in September 2026 and is rolling out to paid plans first. Which model answers a request depends on the plan and the task.
ChatGPT has a free tier, paid individual plans and Business and Enterprise plans for organisations. In the US, Go costs $8 a month, Plus $20 and Pro $100 or $200. Free and Go use GPT-5.6 Luna; Plus adds GPT-5.6 Sol with adjustable thinking, and Pro adds GPT-6 Pro.
ChatGPT key facts
| Developer | OpenAI |
|---|---|
| Type | AI assistant with tools and agents |
| First released | November 30, 2022 |
| Current models | GPT-5.6 family; GPT-6 Astra (rolling out to paid plans, September 2026) |
| Platforms | Web, iOS, Android, macOS, Windows |
| Free tier | Yes, with usage limits |
| Paid plans (US) | Go $8/month, Plus $20/month, Pro $100 or $200/month; Business, Enterprise |
| Voice conversations | Yes |
ChatGPT compared
Guides that cover ChatGPT
ChatGPT FAQ
Is ChatGPT free?
Yes. ChatGPT has a free tier with usage limits. Paid plans — Go, Plus and Pro for individuals, Business and Enterprise for organisations — raise those limits and unlock newer models and features. Plus costs $20 a month in the US.
Which model does ChatGPT use?
It depends on your plan. As of September 2026, Free and Go use GPT-5.6 Luna, Plus uses GPT-5.6 Sol with Medium and High thinking levels, and Pro adds GPT-6 Pro, powered by GPT-6 Astra, OpenAI's most capable model.
What is the difference between ChatGPT Go and Plus?
Go costs $8 a month in the US and gives you more messages, uploads, image creation and memory than the free plan, using GPT-5.6 Luna. Plus costs $20 and adds GPT-5.6 Sol with adjustable thinking, expanded deep research and Codex, legacy models and no ads.
Who makes ChatGPT?
ChatGPT is made by OpenAI, which released it to the public on November 30, 2022.
Sources
Every fact on this page is checked against a vendor announcement, documentation or a named news report.
- GPT-6 Astra: A new generation of intelligence — OpenAIhttps://openai.com/index/gpt-6-astra/
- GPT-5.6: Frontier intelligence that scales with your ambition — OpenAIhttps://openai.com/index/gpt-5-6/
- ChatGPT pricing — OpenAIhttps://openai.com/chatgpt/pricing/
- GPT-5.6 and GPT-6 Pro in ChatGPT — OpenAIhttps://help.openai.com/en/articles/20001354-gpt-56-in-chatgpt
- What is ChatGPT Go? — OpenAIhttps://help.openai.com/en/articles/11989085-what-is-chatgpt-go
- Introducing ChatGPT — OpenAIhttps://openai.com/index/chatgpt/