Leading AI company reaches $3T valuation

What AI 2027 Predicted

The essay’s sidebar graphics show OpenBrain’s valuation trajectory: $1T (April 2026), $2T (August 2026), $3T (December 2026). The $500B mid-2025 milestone actually happened (OpenAI reached $300B in March 2025, then $500B by October 2025). Note: The AI Futures self-grading referenced a $2.5T figure, but this does not appear in the source PDF. The sidebar clearly shows $3T as the end-of-2026 target.

How We Track This

We monitor:

• OpenAI funding round valuations
• Anthropic funding round valuations
• Public market AI company valuations (for comparison)
• Revenue multiples and growth rates used to justify private valuations
• Secondary market pricing for private AI company shares

Current Evidence

OpenAI:

• October 2025: $500B valuation ($6.6B funding round)
• March 2025: $300B valuation ($40B funding round)
• March 2026: $852B post-money valuation ($122B funding round — expanded from initial $110B announcement in February — from Amazon, NVIDIA, SoftBank. Final close March 31, 2026). This is the largest private funding round in history. (OpenAI, Bloomberg, TechCrunch, Crunchbase)

Anthropic:

• September 2025: $183B valuation (Series F)
• February 2026: $380B post-money valuation ($30B Series G from GIC, Coatue, others) (Reuters, Anthropic)
• May 2026: $965B post-money valuation ($65B Series H led by Altimeter Capital, Dragoneer, Greenoaks, and Sequoia Capital). Anthropic also reported that run-rate revenue crossed $47B earlier in May. (Anthropic)
• June 2026: confidential draft S-1 submitted to the SEC for a proposed IPO. Anthropic says the filing gives it the option to go public after SEC review, but the number and price of shares have not been set and the IPO remains dependent on market conditions. (Anthropic, AP)

Gap to target:

• OpenAI at ~$852B is roughly 28% of the $3T target
• Anthropic at ~$965B is roughly 32% of the $3T target
• To reach $3T by end of 2026, OpenAI would need to roughly 3.5× its valuation from March 2026 levels; Anthropic would need roughly 3.1× from its May 2026 Series H valuation
• The combined valuations of OpenAI ($852B) + Anthropic ($965B) now exceed $1.8T, but the prediction is about a single leading lab reaching $3T

Context:

• For comparison, Apple, Microsoft, and NVIDIA each trade above $3T in public markets — so a $3T valuation is not impossible for the world’s leading AI company, but OpenAI would need to reach public mega-cap territory while still largely private
• Anthropic’s and OpenAI’s confidential IPO filings materially increase the probability of a public-market repricing before year-end, but the draft S-1 submissions are not completed IPOs and do not establish a $1.5T+ or $3T market valuation
• Axios reported that Apollo and Blackstone partnered with Broadcom on a $35B loan-backed AI infrastructure platform that would help Anthropic lease Google-developed chips through Fluidstack data centers. The structure is relevant to pre-IPO infrastructure financing, but it is not itself a new equity valuation.
• The AI Futures self-grading (February 2026) noted valuation was “behind pace” — OpenAI reached $500B by October 2025, about 4 months later than the scenario’s predicted mid-2025

Sources:

• OpenAI $122B round at $852B — OpenAI (Mar 2026)
• Anthropic $30B Series G at $380B — Anthropic (Feb 2026)
• Anthropic $65B Series H at $965B — Anthropic (May 2026)
• Anthropic draft S-1 announcement — Anthropic (June 2026)
• OpenAI confidential S-1 announcement — OpenAI (June 2026)
• Axios: Apollo leads $35B debt deal for Anthropic’s compute
• Grading AI 2027’s 2025 Predictions — AI Futures Project

Counterevidence & Limitations

• Private market valuations can jump dramatically in single funding rounds — one more round could significantly close the gap
• OpenAI is reportedly considering an IPO, which could dramatically revalue the company
• Anthropic’s draft S-1 makes a public listing plausible, but confidential filings can be delayed, withdrawn, or price below private-market expectations
• Revenue growth (if $29-35B materializes in 2026) could support much higher multiples
• However, $3T implies a revenue multiple of 85-100× on projected 2026 revenue — extreme even by AI standards
• The most likely path to $3T would be a public listing with market enthusiasm, not another private round
• Macro conditions, competitive dynamics, and governance questions (OpenAI’s for-profit conversion) add uncertainty

What Would Change Our Assessment

• Upgrade to “emerging”: OpenAI or another lab reaches $1.5T+ valuation (via funding round or IPO)
• Upgrade to “on-track”: Valuation exceeds $2T by Q3 2026
• Confirmed: Single lab reaches $3T by end of 2026
• Maintain “behind”: No funding round or IPO pushes valuation past $1.5T through 2026

Update History

Date	Update
2026-06-15	OpenAI announced a confidential S-1 submission to the SEC, while saying IPO timing remains undecided. Axios also reported a $35B Anthropic compute-financing platform involving Apollo, Blackstone, Broadcom, and Fluidstack. These developments strengthen the public-market and infrastructure-financing path, but no single lab has repriced above $1T yet. Confidence adjusted 0.75 → 0.80.
2026-06-06	Anthropic announced a $65B Series H at a $965B post-money valuation on May 28 and reported run-rate revenue above $47B earlier in May. On June 1, Anthropic announced it had confidentially submitted a draft S-1 to the SEC for a proposed IPO. This materially narrows the gap to the AI 2027 valuation trajectory, but the current single-lab valuation remains well below $3T and the IPO has not yet priced. Status unchanged.
2026-04-20	Reuters reported on April 14 that Anthropic had drawn venture investor interest at valuations as high as $800B, while separate Reuters reporting said some OpenAI investors were questioning the company’s $852B valuation as strategy shifted toward enterprise. The trajectory remains extremely steep, but the path to a single-lab $3T valuation by end-2026 still looks materially behind pace absent an IPO or another step-function repricing.
2026-04-13	OpenAI closed $122B funding round at $852B post-money valuation (March 31, 2026) — confirmed by OpenAI’s own blog post (OpenAI). Led by Amazon, Nvidia, SoftBank with $3B from retail investors. Valuation trajectory steep ($157B → $300B → $500B → $852B over ~18 months) but $3T by end of 2026 would need roughly 3.5× from current level. An IPO at $1T+ remains plausible in 2026, but $3T would require unprecedented public market enthusiasm. Prediction remains behind.
2026-04-02	OpenAI closed expanded $122B funding round at $852B valuation (March 31, 2026) — the largest private funding round in history. Updated from initial $110B announcement. Anthropic valuation corrected to $183B (Series F, Sep 2025). Total OpenAI funding now exceeds $180B. Still ~3.5× short of $3T target.
2026-03-23	Tomasz Tunguz analysis (Mar 21) discusses potential SpaceX/OpenAI/Anthropic IPOs as “$3 trillion stress test” — OpenAI reportedly targeting $1T+ IPO valuation (Tunguz). If OpenAI IPOs at $1T+, the gap to $3T narrows significantly but remains large. Markets currently down ~5% YTD, making mega-cap IPOs harder. No status change.
2026-03-16	OpenAI confirmed initial $110B raise (Feb 27). Still well short of $3T target. No status change.
2026-03	$3T valuation requires ~4× increase in remaining 10 months of 2026. Would need either IPO momentum or dramatic revenue acceleration.
2026-02	OpenAI announces $110B funding round at $730B pre-money valuation from Amazon, NVIDIA, SoftBank. Anthropic at $380B ($30B Series G, Feb 12). Combined top-3 lab valuation now exceeds $1.3T.
2026-01	Anthropic signed a $10B term sheet at $350B valuation — nearly double its September 2025 level of $183B. xAI raised $20B at ~$230B (January 6). OpenAI remains at $500B. $3T would require approximately 6× from OpenAI’s current level. Status: emerging.
2025-10	OpenAI becomes the world’s most valuable private company following its $300B valuation fundraise and secondary stock transactions. At $300-500B, OpenAI is the clear leader among private AI companies. The $3T target remains approximately 6-10x away.
2025-04	OpenAI valued at $300B post April 2025 round. $3T is approximately 10x away. The trajectory requires both rapid revenue growth and a sustained multiple — possible but the gap from current valuation is large.