Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for OpenAI, Lambda, and 370+ companies. 5-min read every Tuesday.
OpenAI is valued at $920B — the world's most valuable AI company, backed by over $65B in funding. The company recently restructured as a Public Benefit Corporation to support its mission of developing safe AGI.
| Industry | Artificial Intelligence |
| Stage | Public |
| IPO Status | Public |
| Valuation | $920.0B |
| Total Funding | $65.4B |
| Headquarters | San Francisco, CA |
Lambda is the AI cloud infrastructure company providing on-demand NVIDIA GPU clusters for AI training and inference — the infrastructure backbone for thousands of AI companies. Valued at $5.9B with $800M raised, Lambda operates data centers across the US and competes with CoreWeave, AWS, and Google Cloud for the $100B+ AI compute market. Major infrastructure IPO candidate as AI training demand drives exponential GPU cloud growth.
| Industry | Cloud Computing |
| Stage | Series E |
| IPO Status | Pre-IPO |
| Valuation | $15.0B |
| Total Funding | $3.8B |
| Headquarters | San Francisco, CA |
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OpenAI is valued at $920.0B. Lambda is valued at $15.0B. Both figures are based on the most recent funding rounds tracked by TechStackIPO.
OpenAI reported 12700000000 arr revenue in 2025. Lambda's revenue is not publicly disclosed. Revenue figures are sourced from TechStackIPO's company database and updated as new data becomes available.
OpenAI filed an S-1 in June 2026 and is actively in the IPO pipeline. Lambda is currently pre-IPO. Track both companies on TechStackIPO for S-1 filings, roadshow announcements, and IPO date updates.
OpenAI has raised $65.4B. Lambda has raised $3.8B.
OpenAI operates in Artificial Intelligence, while Lambda operates in Cloud Computing.
OpenAI is a Artificial Intelligence company valued at $920.0B with $65.4B raised. Lambda is a Cloud Computing company valued at $15.0B with $3.8B raised. See TechStackIPO's full side-by-side comparison for IPO readiness scores, funding timelines, and investor access options.
Accredited investors can access pre-IPO shares in OpenAI and Lambda through secondary market platforms, pre-IPO funds, and broker-dealer platforms that facilitate private company transactions. TechStackIPO's marketplace section tracks available access options for both companies. Pre-IPO investments carry higher risk and limited liquidity.