Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for OpenAI, Vapi, 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 | Pre-IPO |
| IPO Status | Private |
| Valuation | $920.0B |
| Total Funding | $65.4B |
| Headquarters | San Francisco, CA |
Vapi is the voice AI infrastructure platform enabling developers to build, deploy, and scale voice AI agents — the Twilio for voice-powered AI applications handling millions of minutes of calls monthly. Valued at $150M with $40M raised, Vapi serves 10K+ developers and competes with Retell, Bland AI, and OpenAI Realtime API. Major AI infrastructure IPO candidate as voice-enabled AI agents replace traditional call centers for customer service, sales, and scheduling.
| Industry | Artificial Intelligence |
| Stage | Series A |
| IPO Status | Private |
| Valuation | $150M |
| Total Funding | $180M |
| Headquarters | San Francisco, CA |
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OpenAI is valued at $920.0B. Vapi is valued at $150M. Both valuations are based on the most recent private funding rounds tracked by TechStackIPO.
OpenAI has raised $65.4B. Vapi has raised $180M.
OpenAI is currently private. Vapi is currently private. Track both on TechStackIPO for S-1 filings and IPO announcements.
OpenAI operates in Artificial Intelligence, while Vapi operates in Artificial Intelligence.
OpenAI is a Artificial Intelligence company valued at $920.0B with $65.4B raised. Vapi is a Artificial Intelligence company valued at $150M with $180M raised. See TechStackIPO's full side-by-side comparison for IPO readiness scores, funding timelines, and investor data.
Accredited investors can access pre-IPO shares in OpenAI and Vapi 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.