关注OpenAI（英）2026

LATE-STAGE COMPANY RESEARCHAn Eye on OpenAI Institutional Research Group Harrison RolfesSenior Research Analyst,Late-Stage Researchharrison.rolfes@pitchbook.com What you need to know before the IPO pbinstitutionalresearch@pitchbook.com PitchBook is a Morningstar company providing the most comprehensive, mostaccurate, and hard-to-find data for professionals doing business in the private markets. Published on June 2, 2026 Key takeaways Contents Key takeaways1Introduction2AI Business Quality (AIBQ) scorecard:OpenAI under the microscope2The revenue engine and the margin paradox5The advertising reality check6The Microsoft reset: Anatomy of a$70 billion to $97 billion swing8Enterprise: The market that OpenAIis losing9The IPO math and the three-way race10What the S-1 must disclose versuswhat it likely will not11The bottom line and what wouldchange our view11References14 •OpenAI scores a 4.8 out of 10 on the AIBQ framework, the lowest in its valuationcohort.At $177.5 billion per AIBQ point, OpenAI trades at 11.7x the rate ofDatabricks ($15.1 billion per AIBQ point). OpenAI’s price has been fully decoupledfrom its business quality. •OpenAI’s revenue is real, but its economics are less certain.OpenAI’s Q1 2026revenue hit $5.7 billion against a -122% adjusted operating margin, equating to$2.22 spent per dollar earned and nearly $7 billion lost in a single quarter. •The $38 billion Microsoft revenue-share cap is the most important pre-IPOfinancial event.The April 2026 renegotiation saves OpenAI an estimated $70 billionto $97 billion through 2030.1It is the only variable that makes a positive-FCF modelpossible for OpenAI. Post-2030 terms are undisclosed. •OpenAI is losing the highest-quality market.Anthropic leads enterprise LLMspending (with a 40% share versus OpenAI’s 27%) and enterprise coding (ClaudeCode has approximately $2.5 billion in ARR and a roughly 54% share).2Anthropic isnow the more valuable company at $965 billion and filed its own confidential S-1 onJune 1, 2026. •The race is taking shape: SpaceX/xAI and Anthropic have filed, and OpenAI hasannounced intent but has not yet filed its S-1.SpaceX/xAI filed publicly on May 20,2026, and Anthropic filed confidentially on June 1, 2026. If all three listings proceedin Q4, combined primary issuance of $180 billion to $365 billion would exceed theUS IPO proceeds for all of 2021. •Forward pricing risk is emerging but not yet live.Anthropic’s S-1 disclosures willset a valuation comp that directly constrains how OpenAI can price its own offeringwhen it files. OpenAI is not currently in the SEC comment period, but the pricingbenchmark Anthropic establishes in Q3 gives OpenAI’s bankers a comp to workwith and a spread to defend. Introduction OpenAI’s $852 billion valuation rests on a single structural assumption: that thecompany reaches free cash flow (FCF) break-even before its infrastructure obligationspeak. The numbers show it cannot get there without the $38 billion Microsoft revenue-share cap. The cap binds around 2028, and post-2030 terms are undisclosed. The $1trillion listing is a bet on an agreement whose most consequential provisions have notbeen written yet. OpenAI plans to confidentially file its S-1 with the US Securities and ExchangeCommission (SEC), with Goldman Sachs and Morgan Stanley leading the processtoward a Q4 2026 listing near $1 trillion.3On May 28, 2026, Anthropic closed a $65billion Series H at a $965 billion post-money valuation,4eclipsing OpenAI’s valuationfor the first time. On June 1, 2026, Anthropic filed its own confidential S-1, addingurgency to OpenAI’s intent to file.5 OpenAI is not going public as the undisputed AI leader but as the second-most-valuable AI startup in what may become a three-way IPO race if it files as announced,behind a competitor projecting its first profitable quarter. AI Business Quality (AIBQ) scorecard: OpenAIunder the microscope OpenAI AIBQ score4.8/10 The AIBQ framework scores frontier AI companies across five weighted dimensions:capital efficiency (20%), revenue quality (25%), compute independence (15%),governance optionality (20%), and moat durability (20%). OpenAI scores 4.8 out of10, placing it fourth among the Frontier Five. At an $852 billion valuation, it tradesat $177.5 billion per AIBQ point, which is 11.7x the rate of Databricks at $15.1 billionper point. •Capital efficiency (score: 4):OpenAI has raised $185.9 billion to produce $25 billionto $33 billion in annual recurring revenue (ARR).6This equates to a 0.16x capitalefficiency ratio, improving from 0.11x in March but still third lowest in the FrontierFive. Anthropic generates a 0.37x capital efficiency ratio on $126.8 billion incumulative primary equity. Each incremental dollar of OpenAI capital is producingless revenue than the last. •Revenue quality (score: 5):OpenAI’s enterprise retention of 88% is competitivebut below the over 120% net revenue retention (NRR) that public software-as-a-service investors treat as a quality b