ChatGPT
OpenAI’s flagship AI assistant for writing, coding, research, and everyday tasks — now running on the GPT-5.5 generation.
What is ChatGPT?
ChatGPT is OpenAI’s conversational AI assistant, used by hundreds of millions of people to write, code, analyse, brainstorm, and research. You chat in plain language and it responds with text, images, voice, or live web results. In 2026 it has grown from a single chatbot into a full workspace — with persistent memory, project folders, document tools, and specialised modes for deep reasoning and scientific writing.
Latest in 2026
As of May 2026, GPT-5.5 Instant replaced the older default for all users — sharper accuracy, fewer hallucinations in sensitive areas like law, medicine and finance, and stronger STEM and web-search help.
GPT-5.5 Thinking and GPT-5.4 Pro handle complex, multi-step problems with deeper internal reasoning — built for research-grade and high-stakes work.
Upgraded memory keeps your context fresh automatically and carries it across chats, with roughly double the memory capacity for Plus and Pro users.
Projects now support up to 40 uploaded files with shared instructions and history, plus a persistent File Library to reuse documents across conversations.
Key Features
Pricing Tiers (2026)
Pricing changes often — check openai.com for current rates.
Best For
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