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ChatGPT

ChatGPT is OpenAI's AI assistant and the product that brought large language models to a mainstream audience when it launched on November 30, 2022. It now spans free and paid plans, desktop and mobile apps, agent features and the Codex coding agent; this page tracks what it does, which models power it and what changes.

34 stories · updated Oct 9

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Key facts

Checked Oct 9

Launch: November 30, 2022
Maker: OpenAI (OpenAI Group PBC)
Models since Oct 7, 2026: GPT-6 Sol (Plus, Pro, Business, Enterprise); GPT-6 Luna (Free, Go)
Recent changes: Sep 29, 2026: new Pro 500 plan; Oct 6, 2026: audio file uploads
Coding agent: Codex is included in ChatGPT plans
ChatGPT agent: Retired; help center says it "is no longer available" and points to ChatGPT Work (no date given)

Latest on ChatGPT

Agents · ExplainerOpenAI Codex explained: where it runs, which models and limits you get, and how its sandbox worksWhat Codex is in October 2026, from OpenAI's docs and pricing pages: where it runs, which plans get which models, how far the allowance goes, and what its sandbox enforces.Oct 9·7 min read

Industry · ExplainerOpenAI explained: who controls it, what it sells, and how it makes moneyFrom a 2015 nonprofit to a public benefit corporation reportedly seeking a $1.4 trillion valuation: OpenAI's structure, Microsoft deal, products, prices and revenue.Oct 9·7 min read

Research · ExplainerContext windows vs memory vs RAG: what each one actually doesA 1M-token window, a chatbot that "remembers you" and a retrieval pipeline solve different problems. Here's how each works and when to use which.Oct 9·7 min read

Agents · ExplainerWhat is MCP? The Model Context Protocol explained (2026 edition)MCP is the open standard that lets AI apps plug into tools and data. Here's how it works, who governs it, what changed in the stateless 2026-07-28 spec, and where the risks are.Oct 9·9 min read

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