OpenAI Financials: August 2026 Update

No new round closed and no revenue milestone was reported this month. The core numbers carry forward from the March 2026 financing, while the legal calendar grows noisier.

Key points

• OpenAI’s post-money valuation remains $852B, set by the March 2026 round. The run-rate of ~$25B annualized (as of February 2026) is the latest figure Sacra has confirmed.
• Anthropic’s Sacra-tracked valuation now stands at $965B on a $47B annualized run-rate (as of May 2026), making it the higher-valued private AI lab on both dimensions.
• Public AI-adjacent megacaps rallied hard on August 1: Amazon +15.3%, Alphabet +6.7%, NVIDIA +2.9%, Microsoft +3.0%. That tailwind has not yet translated into a fresh OpenAI primary round or a reported valuation update.
• OpenAI reportedly offered the Trump administration a 5% equity stake, according to a Financial Times report cited by the Economic Times. No deal has been confirmed.
• Two separate lawsuits landed in July: British Columbia announced plans to sue OpenAI over its handling of violent ChatGPT activity ahead of a school shooting, and Apple filed suit over intellectual-property claims.

Where does the valuation stand?

The $852B post-money figure dates to the March 31, 2026 close, when SoftBank co-led a round that included a16z, D.E. Shaw Ventures, MGX, TPG, and T. Rowe Price-advised accounts, alongside strategic participants Amazon, NVIDIA, and Microsoft. At least $35B of the $122B headline was contingent on conditions that have not yet been publicly resolved. Until a new primary close or a credible secondary transaction sets a new mark, $852B remains the operative valuation.

Anthropically’s Series H in late May pushed its valuation to $965B on Sacra’s estimates, a roughly 13% premium to OpenAI despite OpenAI holding the larger installed base and brand recognition. The gap reflects Anthropic’s faster reported revenue growth: its $47B run-rate as of May 2026 compares to OpenAI’s $25B as of February 2026, though the two figures carry different as-of dates and Sacra’s methodology for Anthropic’s revenue trajectory shows zeroed figures through 2024 before a sharp ramp.

What does the legal calendar mean for the IPO path?

OpenAI’s conversion to a public benefit corporation in October 2025 was explicitly framed as a step toward a public offering. Three overlapping legal actions now add friction to that timeline. British Columbia’s planned suit centers on whether OpenAI failed to flag dangerous user behavior ahead of a mass casualty event, a reputational and regulatory risk that equity underwriters will need to price. Apple’s suit, filed in July 2026, targets what the complaint characterizes as OpenAI’s inability to replicate hardware-integrated AI capabilities, a competitive-positioning argument with potential IP implications. And the reported 5% government stake offer, if it proceeds, could complicate standard S-1 disclosure around material shareholders and government relationships.

None of these individually blocks an IPO. Cumulatively, they extend the due-diligence surface area and give underwriters more reason to wait for resolution before committing to a pricing window.

How do the public comparables look?

The August 1 equity session was a strong one for the peer group. Amazon’s 15.3% single-day gain, if it reflects genuine multiple expansion for cloud-plus-AI businesses, provides a favorable backdrop for private AI lab valuations. Microsoft at $464.72 and Alphabet at $356.13 are both meaningful reference points: OpenAI’s $852B valuation implies a revenue multiple of roughly 34x its $25B run-rate, above where most public software trades but not disconnected from the multiples embedded in Anthropic’s $965B on $47B (approximately 20x). The gap between the two private lab multiples suggests the market is pricing OpenAI’s brand and consumer scale at a meaningful premium, or alternatively that OpenAI’s run-rate figure is simply more stale.

The next valuation-moving event to watch is any confirmation of the government stake offer, a secondary tender, or a primary round triggered by the contingent tranches from March.