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2023-Feb 2026
Nov 2023-Feb 2026
| Partner / Program | Announced | Commitment / Capacity | Silicon / Notes |
|---|---|---|---|
| Stargate JV (SoftBank, Oracle, MGX) | Jan 2025, sites expanded 2025-2026 | $500B over 4 years; ~7 GW planned, >$400B over 3 years; Abilene TX flagship | Multi-vendor US datacenter buildout |
| Oracle cloud contract | Jul 2025 | 4.5 GW; ~$300B over 5 years (2027-2031, reported) | Oracle OCI capacity, NVIDIA GPUs (450K GB200 at Abilene) |
| NVIDIA strategic commitment | Sep 2025 | At least 10 GW; up to $100B NVIDIA investment (reported); first deployment H2 2026 | NVIDIA Vera Rubin systems |
| AMD deployment agreement | Oct 2025 | 6 GW of AMD Instinct GPUs; first 1 GW H2 2026; equity warrants to OpenAI | AMD Instinct MI series |
| Microsoft Azure | 2019-2023, amended 2025 | Foundational cloud relationship; ~$13B+ cumulative investment | NVIDIA GPUs on Azure |
| Broadcom custom silicon | 2025 | Co-developed inference ASIC; mass production targeted H2 2026 | Custom OpenAI chip (TSMC), reduces NVIDIA dependence |
| Round (date, lead) | Amount Raised | Post-Money Valuation | Notable Investors |
|---|---|---|---|
| Microsoft Partnership I (2019-07) | $1B | n/a (strategic) | Microsoft (Azure) |
| Microsoft Partnership II (2023-01) | ~$10B (reported) | n/a (strategic) | Microsoft (Azure) |
| Secondary Tender (2023-04) | secondary | $29B | Sequoia, Thrive Capital, Tiger Global |
| Tender Offer (2024-02, Thrive) | secondary | $86B | Thrive Capital |
| Primary Round (2024-10, Thrive) | $6.6B | $157B | Thrive Capital, Microsoft, NVIDIA, SoftBank, MGX |
| SoftBank-Led Round (2025-03, SoftBank) | $40B (committed) | $300B | SoftBank, Microsoft, Coatue, Altimeter, Thrive |
| Employee Tender (2025-10) | secondary (~$6.6B) | $500B | Thrive Capital, SoftBank, Dragoneer, MGX, T. Rowe Price |
| Primary Round (2026-03, SoftBank/Amazon) | $122B | $852B | Amazon ($50B), SoftBank ($30B), NVIDIA ($30B), a16z, Thrive Capital, MGX, D.E. Shaw |
| Date | Model / Release | Notable capability / significance |
|---|---|---|
| Jun 2020 | GPT-3 (175B params) | API launched in private beta; the model that made the developer platform a business |
| Nov 2022 | ChatGPT (GPT-3.5) | Fastest consumer product to 100M users; defines the company |
| Mar 2023 | GPT-4 | Multimodal with image input; powers ChatGPT Plus |
| May 2024 | GPT-4o | Omni-modal with native voice; free-tier upgrade |
| Sep 2024 | o1 (reasoning) | First reasoning-focused frontier model; chain-of-thought trained |
| Apr 2025 | o3 / o4-mini | Reasoning models with full tool use across ChatGPT |
| May 2025 | Codex (cloud agent) | Cloud software-engineering agent in ChatGPT |
| Aug 2025 | GPT-5 | Unified system replacing GPT-4o, o3 and routing logic; default in ChatGPT |
| Sep 2025 | Sora 2 | Text-to-video and audio generation with iOS app |
| Nov 2025 | GPT-5.1 (Instant / Thinking) | First point-release of the GPT-5 system |
| Dec 2025 | GPT-5.2 / GPT-5.2-Codex | Frontier series for professional knowledge work and long-running agents |
| Apr 2026 | GPT-5.5 / GPT-5.5 Pro | Latest frontier model; GA in the API 24 Apr 2026 |
Early 2025-End 2026 (target)

$PRIVATE
Largest AI lab by revenue. Approximately $13B annualized run-rate revenue (mid-2025) from a mix of ChatGPT consumer subscriptions, ChatGPT Enterprise / Team, the OpenAI API, and Microsoft Azure OpenAI revenue share. ChatGPT reaches roughly 800M weekly active users (late 2025). Builder of the GPT family (GPT-4o, GPT-4.5, GPT-5, o-series reasoning models) and Sora video. Microsoft is the dominant compute and distribution partner; SoftBank led the $40B March 2025 primary round at $300B.