What are the top pre-IPO AI companies in 2026?

Top pre-IPO AI companies in 2026 by IPO Readiness Score: Anthropic (94/A, targeting October 2026, $380B valuation), OpenAI (93/A, targeting Q4 2026, $920B valuation), Databricks (90/A, confidential S-1 filed April 2026, $134B), Scale AI (88/A, S-1 filed March 12 2026, $14B), xAI (83/B, $50B, no S-1 filed), and SpaceX (81/B, S-1 filed May 20 2026, $1.75T–$2T). Note: Cerebras went public as $CBRS on Nasdaq on May 14, 2026 — no longer pre-IPO.

VERIFIED As of June 2026, Databricks (confidential S-1, Apr 2026), Scale AI (S-1, Mar 12 2026), and SpaceX (S-1, May 20 2026) are the three with confirmed S-1 filings. Anthropic and OpenAI are widely expected to file in H2 2026 given the IPO window.

ESTIMATED xAI (80/100 IPO readiness) has strong fundamentals but no S-1 filed as of June 2026 — timeline depends on Grok revenue growth and Musk''s strategic decisions. SpaceX is the largest valuation of any pre-IPO company at $1.75T–$2T, with its roadshow starting June 8 and expected pricing around June 18.

⚠ NOT INVESTMENT ADVICE Pre-IPO shares for these companies are available on secondary markets (Forge, EquityZen, Hiive) for accredited investors. This is not investment advice.