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OpenAI

OpenAI is the San Francisco company that makes ChatGPT, the GPT model family and the Codex coding agent. It began in 2015 as a nonprofit research lab and, after an October 2025 recapitalization, is now a public benefit corporation controlled by a nonprofit foundation, a structure that shapes debates about its mission and its investors.

83 stories · updated Oct 9
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Checked Oct 9
ChatGPT launch
November 30, 2022

Latest on OpenAI

Research · AnalysisOpenAI's Navier–Stokes claim, explained for builders: the verifier is the storyOpenAI says 10,000 AI agents found a blowup in the Navier–Stokes equations and proved it in Lean. What is checked, what isn't, and what it means for agent builders.·6 min readIndustry · AnalysisToken pricing isn't the story: what the official price pages actually tell youAnthropic and OpenAI now charge identical sticker prices at two tiers. Your bill is decided by tokenizers, thinking tokens, caching, long-context surcharges and tool fees.·8 min readHardware · AnalysisThe gigawatt datacenter race: what's announced, what's running, and what's holding it backAI labs and clouds have announced tens of gigawatts of compute. Primary sources show far less of it running. A sourced table and an honest look at the limits.·8 min readModels · AnalysisDo AI labs really ship 'mini' models first? What the release record since 2024 showsAcross 32 small-vs-flagship pairings from six labs, the small model came first only five times. Here's what really drives the timing, and the price war at the bottom.·9 min readModels · BenchmarksLong-context recall: what independent benchmarks say "1 million tokens" really buys youEvery frontier API now accepts about a million tokens. Independent evaluations from RULER to ATLAS show how much of that window models actually use.·9 min readProducts · ExplainerChatGPT agent mode, explained: what it was, why it's gone, and what ChatGPT Work does insteadOpenAI's help center says ChatGPT agent is no longer available. ChatGPT Work, a cloud browser and dots now do its job. Here's how they work.·7 min readAgents · 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.·7 min readDevelopers · ExplainerModel routing explained: how to mix cheap, mid and frontier modelsSending every request to a frontier model can cost 40 times more than it needs to. How routers, cascades and advisor patterns work, and what vendors actually offer.·8 min readModels · ExplainerReasoning models explained: thinking tokens, what they cost, and when to use themClaude, GPT-6 and Gemini all bill hidden thinking as output tokens. How each vendor exposes it, what it costs in practice, and when to turn it down.·7 min readIndustry · 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.·7 min read

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