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Every release, deal and policy move from OpenAI — updated daily.
TopicsModels
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Harvard Study Finds Claude AI Outperforms Human Peer Review
A Harvard University study reveals that AI-generated reviews powered by Claude outperform paid human experts on key quality dimensions for academic papers. The findings could transform the $30 billion publishing industry while raising new governance questions.
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Model chronicle · ChatGPT
GPT-6.1 Sol
developers.openai.com (source, opens in a new tab)GPT-6 Sol & Luna
Two GPT-6 reasoning models. Price shown is GPT-6 Sol (≤272K prompt); GPT-6 Luna costs $0.10 / $0.50.
developers.openai.com (source, opens in a new tab)GPT-6 Astra
OpenAI's most capable model for reasoning, coding, computer use and research.
openai.com (source, opens in a new tab)GPT-5.6
GPT-5.6 family: Sol (frontier), Terra (balanced) and Luna (high-volume).
developers.openai.com (source, opens in a new tab)GPT-5.5
Rolled out in ChatGPT and Codex on Apr 23; API availability followed on Apr 24, 2026.
openai.com (source, opens in a new tab)GPT-5.4
Frontier model for professional work with built-in computer use; GPT-5.4 Pro in the Responses API.
developers.openai.com (source, opens in a new tab)GPT-5.3-Codex
developers.openai.com (source, opens in a new tab)GPT-5.2
developers.openai.com (source, opens in a new tab)GPT-5.1
developers.openai.com (source, opens in a new tab)GPT-5
GPT-5, GPT-5 mini and GPT-5 nano in ChatGPT and the API.
openai.com (source, opens in a new tab)
Sources: company announcements & release notes.
Fact box
- HQ
- San Francisco, USA
- Founded
- 2015
- CEO
- Sam Altman
- Valuation
- $852B post-money (Mar 2026)
- Total funding
- $185.9B (PitchBook via CNBC, 19 May 2026)
- Core products
- ChatGPT · GPT models · Codex · Sora · API
- Latest round
- $122B Round anchored by Amazon, NVIDIA & SoftBank · Mar 2026
- Stories
- 627
Sources: openai.com, openai.com, cnbc.com
Latest on X
OpenAI · @OpenAI
During this red-teaming exercise, we also found a vulnerability that allows for unauthenticated remote code execution in Brotli, a widely-deployed compression library included in many pieces of software such as Node.js, Bun, and Envoy. The flaw could let an attacker run their
Over the past several months, we have substantially hardened the security of our research training environment. We’ve removed live internet access for all frontier models during training and built an offline world for them to use instead—a cached version of the web where they can
This summer, we invited METR and Redwood Research to pilot an embedded evaluation of our internal monitoring system, providing deep access to our infrastructure over three weeks. Their findings helped strengthen safeguards as we expanded the system and will help shape future
OpenAI models are coming to Google Cloud. We're bringing our frontier models and Codex agentic workflows to Google Cloud's Model Garden, so enterprises can use our technology where they already build. openai.com/index/openai-m…
If you are wondering whether your website is affected, we have packaged a Codex skill to help check. Point your Codex at this repo to guide you through it: github.com/openai/php2she…
Editor's picks
Deals & funding
OpenAI · rounds, valuations, partners, acquisitions · $169B raised in tracked primary rounds · latest 8 of 38
Acquisition
OpenAI acquires Orchestra Bio
openai.com (source, opens in a new tab)Partnership
NVIDIA guarantees up to $105B for OpenAI’s Ohio data-center campus
Residual-value guarantee for OpenAI's 20-year lease of SB Energy's PORTS-Pike campus in Pike County, Ohio: 4.25 GW initially plus a 3.75 GW option, online from 2028. NVIDIA pays only on default; OpenAI must reimburse.
investor.nvidia.com (source, opens in a new tab)Acquisition
OpenAI to acquire Ona for secure cloud execution of Codex agents
openai.com (source, opens in a new tab)Partnership
Microsoft and OpenAI amend deal, ending exclusive licence
openai.com (source, opens in a new tab)Funding
OpenAI raises $122B at $852B valuation
Round closed with $122B in committed capital; anchored by Amazon, NVIDIA and SoftBank.
openai.com (source, opens in a new tab)Acquisition
OpenAI to acquire Astral (uv, Ruff) for Codex
openai.com (source, opens in a new tab)Acquisition
OpenAI to acquire Promptfoo (AI security testing)
openai.com (source, opens in a new tab)Partnership
NVIDIA commits $30B to OpenAI’s $110B funding round
NVIDIA and SoftBank each commit $30B and Amazon $50B to a $110B round at $730B pre-money; the round later closed at $122B ($852B post-money).
openai.com (source, opens in a new tab)
All 38 rounds & deals as a table · 4 funding, 24 partnerships, 10 acquisitions
| Date | Event | Type | Counterparty / round | Amount | Valuation | Source |
|---|---|---|---|---|---|---|
| Oct 20, 2026 | OpenAI acquires Orchestra Bio Life-sciences acquisition announced on OpenAI's blog; terms not disclosed. | Acquisition | acquires Orchestra Bio | — | — | openai.com |
| Aug 17, 2026 | NVIDIA guarantees up to $105B for OpenAI’s Ohio data-center campus Residual-value guarantee for OpenAI's 20-year lease of SB Energy's PORTS-Pike campus in Pike County, Ohio: 4.25 GW initially plus a 3.75 GW option, online from 2028. NVIDIA pays only on default; OpenAI must reimburse. | Partnership · compute | with SB Energy, OpenAI | $105B | — | investor.nvidia.com |
| Jun 11, 2026 | OpenAI to acquire Ona for secure cloud execution of Codex agents Ona's customer-controlled cloud environments let long-running Codex agents run inside an organisation's own cloud. Subject to regulatory approval. | Acquisition | to acquire Ona | — | — | openai.com |
| Apr 27, 2026 | Microsoft and OpenAI amend deal, ending exclusive licence Amended terms: Microsoft stays primary cloud partner but loses exclusivity; OpenAI may sell products on other clouds. | Partnership · cloud | with Microsoft | — | — | openai.com |
| Mar 31, 2026 | OpenAI raises $122B at $852B valuation Round closed with $122B in committed capital; anchored by Amazon, NVIDIA and SoftBank. | Funding | Round anchored by Amazon, NVIDIA & SoftBank | $122B | $852B | openai.com |
| Mar 19, 2026 | OpenAI to acquire Astral (uv, Ruff) for Codex Maker of the Python tools uv, Ruff and ty; team joins Codex and OpenAI plans to keep supporting the open-source tools. Subject to regulatory approval. | Acquisition | to acquire Astral | — | — | openai.com |
| Mar 9, 2026 | OpenAI to acquire Promptfoo (AI security testing) Open-source framework for testing and red-teaming LLM applications; subject to closing conditions. | Acquisition | to acquire Promptfoo | — | — | openai.com |
| Feb 27, 2026 | NVIDIA commits $30B to OpenAI’s $110B funding round NVIDIA and SoftBank each commit $30B and Amazon $50B to a $110B round at $730B pre-money; the round later closed at $122B ($852B post-money). | Partnership · investment | with OpenAI | $30B | — | openai.com |
| Feb 27, 2026 | Amazon to invest $50B in OpenAI; AWS deal expands by $100B to 2 GW of Trainium Amazon invests $50B ($15B upfront, $35B on conditions) as part of OpenAI's $122B round. AWS becomes exclusive third-party cloud for OpenAI Frontier; the $38B AWS deal grows by $100B over 8 years incl. ~2 GW of Trainium. | Partnership · investment | with Amazon | $50B | — | openai.com |
| Dec 11, 2025 | Disney invests $1B in OpenAI and licenses characters for Sora Three-year licence for 200+ Disney, Marvel, Pixar and Star Wars characters in Sora, plus a $1B Disney equity investment in OpenAI. | Partnership · licensing | with Disney | $1B | — | thewaltdisneycompany.com |
| Dec 3, 2025 | OpenAI to acquire Neptune (model-training monitoring) Definitive agreement to acquire Neptune, a tool for tracking and debugging model training runs. | Acquisition | to acquire Neptune.ai | — | — | openai.com |
| Nov 3, 2025 | AWS signs $38B, seven-year compute deal with OpenAI OpenAI gets immediate access to AWS EC2 UltraServers with hundreds of thousands of NVIDIA GB200/GB300 GPUs; all capacity targeted before end of 2026. | Partnership · cloud | with Amazon Web Services | $38B | — | openai.com |
| Oct 28, 2025 | Microsoft and OpenAI sign new definitive agreement after recapitalisation OpenAI recapitalises as a public benefit corporation; Microsoft holds about 27% (valued ~$135B) and OpenAI commits to $250B of Azure services. | Partnership · licensing | with Microsoft | $250B | — | openai.com |
| Oct 23, 2025 | OpenAI acquires Software Applications Inc., maker of Mac assistant Sky Team behind Sky, a natural-language interface for the Mac, joins to bring deeper macOS integration to ChatGPT. | Acquisition | acquires Software Applications Incorporated (Sky) | — | — | openai.com |
| Oct 13, 2025 | Broadcom to build and deploy 10 GW of OpenAI-designed AI accelerators OpenAI designs custom accelerators and systems; Broadcom develops and deploys racks with its Ethernet networking from H2 2026, completing by end of 2029. | Partnership · chips | with Broadcom | — | — | openai.com |
| Oct 6, 2025 | AMD deal: 6 GW of Instinct GPUs, OpenAI gets warrant for up to 160M AMD shares Multi-year, multi-generation deal starting with 1 GW of MI450 GPUs in H2 2026. AMD issues OpenAI a warrant for up to 160M shares (~10%) vesting with deployment milestones. | Partnership · chips | with AMD | — | — | openai.com |
| Oct 2, 2025 | OpenAI completes $6.6B employee share sale at $500B valuation Secondary share sale by current and former employees (no new primary capital). | Funding | Secondary sale | $6.6B | $500B | reuters.com |
| Sep 25, 2025 | CoreWeave expands OpenAI contract by $6.5B to $22.4B New order form under the May 2025 master services agreement: OpenAI commits to pay up to ~$6.5B through May 31, 2031 (CoreWeave 8-K). Total CoreWeave contracts with OpenAI: about $22.4B. | Partnership · compute | with CoreWeave | $6.5B | — | sec.gov |
| Sep 23, 2025 | Five new Stargate sites with Oracle and SoftBank bring planned capacity to ~7 GW Oracle sites in Shackelford County (TX), Doña Ana County (NM) and Wisconsin plus SoftBank sites in Lordstown (OH) and Milam County (TX); Stargate reaches nearly 7 GW planned and over $400B of investment over three years. | Partnership · compute | with Oracle, SoftBank | — | — | openai.com |
| Sep 22, 2025 | NVIDIA and OpenAI sign 10 GW systems deal with up to $100B investment Letter of intent: at least 10 GW of NVIDIA systems; NVIDIA intends to invest up to $100B progressively as capacity is deployed. | Partnership · compute | with NVIDIA | $100B | — | openai.com |
| Sep 2, 2025 | OpenAI acquires Statsig (reported $1.1B); Vijaye Raji becomes CTO of Applications Experimentation platform; founder Vijaye Raji becomes CTO of Applications. Reported all-stock value ~$1.1B (Bloomberg/TechCrunch); not published by OpenAI. | Acquisition | acquires Statsig | $1.1B | — | openai.com |
| Jul 22, 2025 | Oracle: 4.5 GW of additional Stargate capacity (reported ~$300B over five years) OpenAI and Oracle agree to develop 4.5 GW of additional Stargate data-center capacity in the US. In Sept 2025 OpenAI said the Oracle partnership exceeds $300B over five years. | Partnership · compute | with Oracle | $300B | — | openai.com |
| Jun 16, 2025 | OpenAI for Government: $200M Pentagon CDAO pilot Launch of OpenAI for Government with a CDAO contract ceiling of $200M to prototype frontier AI for warfighting and enterprise use cases. | Partnership · government | with US Department of Defense (CDAO) | $200M | — | openai.com |
| May 2025 | OpenAI adds Google Cloud as compute supplier Deal finalized in May 2025 (Reuters); OpenAI later listed Google Cloud among its compute suppliers and began renting Google TPUs. CoreWeave supplies part of the capacity Google resells. | Partnership · cloud | with OpenAI | — | — | reuters.com |
| May 21, 2025 | OpenAI acquires Jony Ive’s device startup io OpenAI merges with io, the device startup founded by Jony Ive; deal value not disclosed by OpenAI. | Acquisition | acquires io Products (Jony Ive) | $6.5B | — | openai.com |
| Mar 31, 2025 | OpenAI raises $40B at $300B post-money valuation Led by SoftBank; largest private tech funding round at the time. | Funding | Round led by SoftBank | $40B | $300B | openai.com |
| Mar 10, 2025 | CoreWeave signs $11.9B compute contract with OpenAI, OpenAI takes $350M stake Five-year agreement for up to $11.9B of AI infrastructure; OpenAI receives $350M of CoreWeave equity ahead of its IPO. Expanded by $4B (May 2025) and $6.5B (Sept 2025) to $22.4B. | Partnership · compute | with CoreWeave | $11.9B | — | investors.coreweave.com |
| Jan 21, 2025 | Stargate: $500B US AI infrastructure JV with SoftBank, Oracle and MGX Stargate LLC plans to invest $500B over four years in US AI infrastructure ($100B immediately). SoftBank and OpenAI lead (SoftBank financial, OpenAI operational); Arm, Microsoft, NVIDIA and Oracle are technology partners. | Partnership · compute | with SoftBank, Oracle +1 | $500B | — | openai.com |
| Oct 2, 2024 | OpenAI raises $6.6B at $157B valuation Amount and post-money valuation per OpenAI; investor list per press reports (led by Thrive Capital). | Funding | Round led by Thrive Capital | $6.6B | $157B | openai.com |
| Jun 21, 2024 | OpenAI acquires Rockset to power ChatGPT retrieval Real-time analytics database company; technology and team integrated into OpenAI's retrieval infrastructure. Price not disclosed. | Acquisition | acquires Rockset | — | — | openai.com |
| Jun 10, 2024 | Apple integrates ChatGPT into Siri and Apple Intelligence ChatGPT is built into iOS 18, iPadOS 18 and macOS Sequoia (Siri, Writing Tools), free without an account; no payment terms disclosed. | Partnership · integration | with Apple | — | — | openai.com |
| May 22, 2024 | News Corp deal: WSJ, The Times and others licensed to OpenAI Multi-year deal covering The Wall Street Journal, Barron's, MarketWatch, The Times, The Sun and others. WSJ reported it is worth more than $250M over five years (not confirmed by OpenAI). | Partnership · content | with News Corp | — | — | openai.com |
| May 16, 2024 | Reddit partnership: Reddit data API in ChatGPT, OpenAI becomes ad partner OpenAI gets access to Reddit's Data API for real-time content in ChatGPT; Reddit builds features with OpenAI models and OpenAI becomes a Reddit ad partner. | Partnership · content | with Reddit | — | — | openai.com |
| Dec 13, 2023 | Axel Springer deal: Bild, Politico and Business Insider content in ChatGPT ChatGPT shows summaries of Axel Springer journalism with attribution and links; content can be used for training. | Partnership · content | with Axel Springer | — | — | openai.com |
| Aug 16, 2023 | OpenAI acquires Global Illumination (makers of Biomes) OpenAI's first acquisition; the team behind the open-source game Biomes joins to work on core products incl. ChatGPT. | Acquisition | acquires Global Illumination | — | — | openai.com |
| Jul 13, 2023 | AP licenses its news archive to OpenAI for model training OpenAI licenses part of AP's text archive back to 1985; AP gets access to OpenAI technology and product expertise. | Partnership · content | with The Associated Press | — | — | ap.org |
| Jan 23, 2023 | Microsoft extends OpenAI partnership with reported $10B investment Third phase of the partnership: multiyear, multibillion-dollar investment; Azure remains OpenAI's exclusive cloud. | Partnership · cloud | with Microsoft | $10B | — | blogs.microsoft.com |
| Jul 22, 2019 | Microsoft invests $1B in OpenAI; Azure becomes exclusive cloud Microsoft invests $1B and becomes OpenAI's exclusive cloud provider; the two co-develop Azure AI supercomputing. | Partnership · investment | with Microsoft | $1B | — | openai.com |
Sources: company announcements & release notes, press reports.
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OpenAI’s 722 AI Math Manuscripts: Verification Challenges
OpenAI released 722 AI-generated mathematics manuscripts on GitHub, but sign errors forced quick retractions. Discover the limits of…
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Chain of Thought Monitoring: AI Safety Risks and OpenAI Debate
Former OpenAI researchers warn that hiding raw Chain of Thought traces could enable reward hacking in frontier models.…
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Ask Your LLM: Why Standardized Evaluation Matters for Model Comparison
The Ask Your LLM trend exposes the limits of manual AI model testing. Learn why standardized evaluation frameworks…
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OpenAI Images 2.5 Cuts Latency by 50% and Refines Developer API
OpenAI Images 2.5 halves image generation latency and introduces a segmented API for creation, editing, and variations. See…
Products & models
ChatGPTCurrent: GPT-6.1 Sol ›Studies
- Tampered ML: Even the Best AI Models Miss One in Five Planted Research FlawsOct 26
- Realistic MCP Faults Halve Agent Quality, and a Bigger Model Doesn’t HelpOct 26
- LLM Reviewers Send 76% of Published Top-Journal Papers Back, Yet Miss Most Planted FlawsOct 23
- Stale CLAUDE.md and AGENTS.md Files Override the Code, and One Sentence Fixes ItOct 23
Policy & Safety
Agents
More stories
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OpenAI Inference Scaling Solves 90-Year Math Problem
OpenAI used 130 billion tokens and formal verification to solve a decades-old math problem. Discover how inference compute is reshaping AI reasoning and infrastructure demands.
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GPT-6 Astra: Market Hype vs. Real Progress
Reports mixing OpenAI GPT-6 with Google Project Astra create confusion. Discover why clear benchmarks and real-time agent evaluations matter for CTOs and developers planning AI deployments.
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AI Power Users Shift to Multi-Model Workflows
Explore how AI power users are evolving from prompt engineering to orchestrating multi-model workflows, verification loops, and enterprise controls across providers like OpenAI and Anthropic.
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OpenAI Astra Model Solves 10 Advanced Math Problems
OpenAI’s new Astra model family claims breakthroughs on 10 complex math problems, advancing AI reasoning. Learn about the infrastructure implications and naming collision with Google DeepMind.
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Kimi K3 Analysis: Performance Claims vs Western AI Rivals
Kimi K3 has generated buzz for claiming to outperform models like GPT-4o and Claude 3.5. This analysis reviews the gaps in benchmarks, pricing, and bilingual capabilities…
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OpenAI GPT-Live: Real-Time Voice Models and Risks
OpenAI launches GPT-Live real-time voice models for natural conversations with low latency. Learn about enterprise impacts, infrastructure needs, and audio prompt injection risks. Explore the guide.
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GPT-Realtime-2.1: OpenAI Cuts Voice AI Latency by 25%
OpenAI GPT-Realtime-2.1 and 2.1-mini bring real-time reasoning and 25% lower p95 latency to voice agents via WebRTC. Ideal for developers building seamless AI conversations. Discover the…
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DeepSeek-V3.2 vs ChatGPT-5.2: Clinical Reasoning Analysis
A multicenter study evaluates DeepSeek-V3.2 against ChatGPT-5.2 on real outpatient diagnosis and treatment. Discover key differences in accuracy, costs, latency, and deployment for health IT leaders.…
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Rogue AI Behaviors Emerge as LLMs Scale in Capability
Frontier LLMs show increasing misaligned behaviors as they scale, bypassing RLHF guardrails. Learn why this creates urgent challenges for AI safety and enterprise deployment.
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GPT-5.4 vs Gemini 3 Pro: Detailed 2026 Comparison
Compare OpenAI’s GPT-5.4 and Google’s Gemini 3 Pro in 2026: performance, pricing, features, and use cases. Find out which frontier AI model suits developers, researchers, or…
Models & specs
OpenAI · context window, max output, API price, modalities, knowledge cutoff, license
| Model | Released | Context | Max output | Price in / out (per 1M) | Modalities | Knowledge cutoff | License / access | Spec source |
|---|---|---|---|---|---|---|---|---|
| GPT-6.1 Sol | Sep 29, 2026 | 1.05M | 128K | $2 / $10 cached $0.1 Prompts >272K input: 2× input, 1.5× output. Batch/Flex −50%. | Text, image in → text out | Apr 2026 | Proprietary (API & app) | developers.openai.com |
| GPT-6 Sol & Luna GPT-6 Sol, GPT-6 Luna | Sep 22, 2026 | 1.05M | 128K | $2 / $10 Luna: $0.10 in / $0.50 out, cached $0.01. | Text, image in → text out | Apr 2026 (Sol) / May 2026 (Luna) | Proprietary (API & app) | developers.openai.com |
| GPT-6 Astra | Sep 3, 2026 | 1.05M | 128K | $10 / $50 cached $1 Prompts >272K input: 2× input, 1.5× output. Batch/Flex −50%. | Text, image in → text out | Apr 2026 | Proprietary (API & app) | developers.openai.com |
| GPT-5.6 | Jul 9, 2026 | 1.05M | 128K | $4 / $20 cached $0.4 | Text, image in → text out | Feb 2026 | Proprietary (API & app) | developers.openai.com |
| GPT-5.5 | Apr 23, 2026 | 1M | 128K | $5 / $30 cached $0.5 Prompts >272K input tokens: 2× input, 1.5× output. | Text, image in → text out | Dec 2025 | Proprietary (API & app) | developers.openai.com |
| GPT-5.4 | Mar 5, 2026 | 1M | 128K | $2.5 / $15 cached $0.25 | Text, image in → text out | Aug 2025 | Proprietary (API & app) | developers.openai.com |
| GPT-5.3-Codex | Feb 24, 2026 | 400K | 128K | $1.75 / $14 cached $0.18 | Text, image in → text out | Aug 2025 | Proprietary (API & app) | developers.openai.com |
| GPT-5.2 | Dec 11, 2025 | 400K | 128K | $1.75 / $14 cached $0.18 | Text, image in → text out | Aug 2025 | Proprietary (API & app) | developers.openai.com |
| GPT-5.1 | Nov 13, 2025 | 400K | 128K | $1.25 / $10 cached $0.13 | Text, image in → text out | Sep 2024 | Proprietary (API & app) | developers.openai.com |
| GPT-5 GPT-5, GPT-5 mini, GPT-5 nano | Aug 7, 2025 | 400K | 128K | $1.25 / $10 cached $0.13 | Text, image in → text out | Sep 2024 | Proprietary (API & app) | developers.openai.com |
Vendor benchmark claims
- GPT-5: SWE-bench Verified 74.9% (vendor claim) · AIME 2025 94.6% without tools (vendor claim)
Benchmarks as published by the vendor at launch; not independently verified by i10x.
Sources: company announcements & release notes. Prices = standard API list price in USD per 1M tokens at time of release or current docs; batch is typically 50% off.