OpenAI is the most anticipated technology IPO of the 2020s. The company completed the long-running for-profit restructure in late 2025, closed a $40 billion tender offer at a $500 billion valuation, and added a fresh $122 billion primary raise in Q1 2026 that pushed the implied valuation higher still. ARR crossed $25 billion by May 2026. Whether OpenAI files before or after Anthropic, and at what valuation, will define the AI public-market class of 2026.
Key Findings
- OpenAI completed the for-profit restructure in October 2025, converting the capped-profit OpenAI LP into a public benefit corporation with a defined dual-class governance structure that resolved the prior nonprofit board control question.
- The $40 billion tender at a $500 billion valuation in November 2025 was led by SoftBank and provided liquidity to employees and early investors.
- A $122 billion primary financing in Q1 2026, again led by SoftBank with Thrive Capital, Microsoft, and several sovereign-wealth co-investors, valued the company on a fully diluted basis at approximately $750 billion.
- ARR reached approximately $25 billion in May 2026 with consumer ChatGPT subscriptions, enterprise ChatGPT Team and Enterprise plans, and the OpenAI API as the three largest revenue lines.
- Goldman Sachs and Morgan Stanley have been engaged as lead bankers; an S-1 filing is reported to be in late preparation but with no fixed target date as of May 2026.
OpenAI Valuation History
| Round | Date | Valuation | Lead |
|---|---|---|---|
| Microsoft initial | 2019 | ~$1 billion implied | Microsoft |
| Microsoft follow-on | Jan 2023 | $29 billion | Microsoft ($10B) |
| Tender offer | Apr 2023 | $27 billion | Multiple secondaries |
| Tender offer | Feb 2024 | $80 billion | Thrive Capital |
| Primary round | Oct 2024 | $157 billion | Thrive Capital |
| Primary round | Mar 2025 | $300 billion | SoftBank |
| Tender (post-restructure) | Nov 2025 | $500 billion | SoftBank |
| Primary round (Q1 2026) | Feb-Mar 2026 | ~$750 billion fully diluted | SoftBank, Thrive |
Revenue Breakdown (May 2026 ARR)
| Revenue Line | Estimated Share of $25B ARR |
|---|---|
| ChatGPT Plus, Pro, and Team subscriptions | ~48% |
| ChatGPT Enterprise and Edu | ~16% |
| OpenAI API | ~22% |
| OpenAI for Business (custom GPT, agents) | ~6% |
| Sora subscriptions (pre-shutdown) | ~3% |
| Microsoft revenue share and OEM | ~5% |
Consumer ChatGPT remains the dominant revenue engine, distinguishing OpenAI from Anthropic where enterprise API is the lead. Sora's April 2026 shutdown removed a small but high-visibility revenue line; the platform was operating at a substantial loss.
IPO Path Comparison: OpenAI vs Anthropic
| Dimension | OpenAI | Anthropic |
|---|---|---|
| May 2026 ARR | ~$25 billion | ~$30 billion |
| Last private valuation | ~$750 billion fully diluted | ~$380 billion ($1T secondaries) |
| Lead bankers | Goldman, Morgan Stanley | Goldman, Morgan Stanley |
| IPO counsel | Latham & Watkins (reported) | Wilson Sonsini |
| Target window | Late 2026 or 2027 | October 2026 (target) |
| Governance | PBC with dual-class | PBC with LTBT oversight |
| Strategic anchor | Microsoft (revenue share) | Amazon and Google |
| Pending major litigation | NYT v OpenAI, Authors Guild | UMG, Concord |
Strategic Context
OpenAI's path to market is shaped by three idiosyncratic factors. First, the Microsoft relationship continues to evolve; the November 2025 restructure clarified ownership stakes but the revenue-share waterfall and exclusivity scope remain points of negotiation. Second, the Stargate joint venture with Oracle and SoftBank requires multi-year compute commitments that, like Anthropic, exceed comfortable private-market financing. Third, the company carries the largest aggregate legal exposure from training-data litigation, with combined plaintiff demands estimated above $10 billion across active cases.
A 20 May 2026 CNBC analysis argued that the "cheap AI" pricing cliff from open-weight releases creates downside scenarios for both OpenAI and Anthropic IPO comps. The counterargument is that consumer subscription pricing has held, and the enterprise spend on AI agents and AI security continues to expand the addressable surface even as raw token prices fall.
Brand Visibility Implications
The OpenAI IPO window will saturate technology and financial AI assistant queries through late 2026 and into 2027. Categories with the strongest AI-mediated discovery upside include AI investment advisory, AI ETF construction, public-company AI competitor analysis, and enterprise AI procurement consulting. Brands operating in those categories that secure citations on Claude, Gemini, and Perplexity ahead of the listing window capture share of voice during the highest-traffic phase of the news cycle.
Methodology
Valuation history compiled from Crunchbase, primary investor disclosures, and reporting from The Information, Bloomberg, and Reuters. Revenue figures are based on reported ARR; OpenAI does not publish audited financial statements ahead of the S-1. Updated monthly through filing.
How Presenc AI Helps
Presenc AI monitors brand visibility on ChatGPT and competitor platforms continuously, including the prompt set most relevant to AI IPO coverage. The platform identifies the queries where brands are getting cited, the queries where competitors are dominating, and the gaps where new content investment unlocks share of voice.