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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 26

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Key facts

Checked Oct 9

Founded: Announced December 11, 2015, as a nonprofit
Headquarters / registered office: 1455 Third Street, San Francisco, CA 94158 (OpenAI OpCo, LLC)
Structure: OpenAI Foundation (nonprofit) controls OpenAI Group PBC; announced October 28, 2025
Ownership (per OpenAI, at the Oct 2025 recapitalization): Foundation ~26%; Microsoft ~27%; employees and investors ~47%. Not updated by OpenAI for later rounds (e.g. Mar 31, 2026)
ChatGPT launch: November 30, 2022
Codex (agent) launch: Codex CLI April 16, 2025; Codex cloud agent May 16, 2025
Current ChatGPT models (Oct 7, 2026): GPT-6 Sol (Plus, Pro, Business, Enterprise); GPT-6 Luna (Free, Go)
Stargate announced: January 21, 2025; $500B planned over four years (company plan)

Latest on OpenAI

Research · BenchmarksGrok picks Republicans, GPT-6.1 Sol picks Democrats: what Convovo's forced-choice vote test found, and its limitsAsked through their APIs who to vote for in 479 2026 midterm races and told not to hedge, Grok 4.7 named the Republican in 92% of its answers that picked a Democrat or a Republican, and GPT-6.1 Sol named the Democrat in 97%, Convovo's published data shows. Who ran the forced-choice test, how, and what it doesn't show.Oct 26·8 min read

Policy · NewsTexas sues OpenAI and Sam Altman over ChatGPT harms to minors: what the lawsuit claimsTexas sues OpenAI: on October 23, 2026, Attorney General Ken Paxton filed a consumer protection lawsuit against OpenAI and Sam Altman in Collin County, alleging ChatGPT was marketed as safe while harming users, including minors. What the state claims, what it wants, and how it fits with Florida's and eight other states' suits.Oct 26·6 min read

Industry · ExplainerOpenAI valuation history: every reported round from 2019 to the $1.25 trillion talksOpenAI's valuation history, from Microsoft's $1 billion in 2019 to the $1.25 trillion pre-money talks CNBC reported on October 22, 2026: which numbers OpenAI confirmed, which were reported, and which were tender offers rather than new money.Oct 26·8 min read

Developers · NewsHTTP2Shell (Node2Shell, CVE-2026-111497): the Brotli flaw OpenAI's Codex Security team reported, what's affected and which versions fix itHTTP2Shell, first called Node2Shell, is CVE-2026-111497: an out-of-bounds write in Google's Brotli decoder that Node.js credits to OpenAI Codex Security. Brotli 1.2.1, 1.1.1 and 1.0.10 fix it, as do Node.js 22.23.4, 24.22.1 and 26.12.1, Python's Brotli 1.2.1 and Envoy 1.40.0. Here's what else is affected and what to patch.Oct 26·7 min read

Agents · NewsAgentic AI Foundation adds Agent Skills, Open Responses, OpenEnv and OpenSandbox: what each project is and who donated itThe Agentic AI Foundation took in four new projects on October 22, 2026: Anthropic's Agent Skills, OpenAI's Open Responses, Hugging Face's OpenEnv and Alibaba's OpenSandbox. What each one does, what the foundation already hosted, and how it's governed.Oct 26·4 min read

Industry · NewsOpenAI fired three safety researchers a week after a review of their Signal chats: what the WSJ reported, and what each side saysWhy were three OpenAI safety researchers fired? The Wall Street Journal reported on October 22–23, 2026, that security staff found disappearing Signal chats with an outside safety researcher. OpenAI says the three mishandled sensitive information; they say they weren't the source of any leak.Oct 26·6 min read

Products · CompareChatGPT vs Perplexity (October 2026): plans, prices, search, models and which to pickChatGPT vs Perplexity in October 2026: Perplexity Pro lists $17 a month billed annually and Max $200 a month, against ChatGPT Plus at $20 and Pro from $100. How search and citations, deep research, agents, models, file limits, ads and privacy compare, from both companies' own pages.Oct 24·Checked Oct 23

Models · CompareGPT-6 Astra vs GPT-6.1 Sol vs GPT-6 Luna: what each OpenAI model is for, prices, limits and which to use (October 2026)GPT-6 Astra vs 6.1 Sol vs Luna, compared on OpenAI's own pages as of October 23, 2026: Astra costs $10/$50 per million tokens, GPT-6.1 Sol $2/$10 and Luna $0.10/$0.50, all with a 1.05M-token context, but they sit in different parts of ChatGPT.Oct 24·Checked Oct 23

Models · BenchmarksBest AI image generators (October 2026), according to LMArena and Artificial Analysis: OpenAI's GPT-Image-2.5 ranks first on bothLooking for the best AI for image generation? On October 23, 2026, OpenAI's GPT-Image-2.5 Sunburst ranks first on LMArena's text-to-image leaderboard and on Artificial Analysis's text-to-image and editing boards. Here's who follows, what each costs and where you can use it.Oct 24·8 min read

Research · AnalysisOpenAI agent monitor red team: how METR and Redwood researchers found agents could slip past itAn OpenAI agent monitor red team exercise by one METR and one Redwood Research employee, published October 22, 2026, describes how OpenAI's internal agents could have avoided or broken misalignment monitoring as it stood on July 21. What access OpenAI gave, how the monitor works, each weakness, what OpenAI says it patched and what the public post leaves out.Oct 24·8 min read

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