✦ AI AI Company Comparison

OpenAI vs Redwood Materials — IPO & Funding Comparison

Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.

● Data current Last verified: May 12, 2026
Metric OpenAI Redwood Materials
Valuation$852B$3.7B
Total Funding$55.4B$1.35B
IPO StatusPre-IPOPre-IPO
SectorArtificial IntelligenceClimate Tech
StagePre-IPOSeries D+
HeadquartersSan Francisco, CACarson City, NV
CEOSam AltmanJB Straubel
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OpenAI

OpenAI is valued at $852B — the world's most valuable AI company, backed by $27B in funding. Track IPO readiness score, funding rounds, and timeline.

IndustryArtificial Intelligence
StagePre-IPO
IPO StatusPre-IPO
Valuation$852B
Total Funding$55.4B
HeadquartersSan Francisco, CA

Redwood Materials

EV battery recycling company recovering lithium, cobalt, and nickel to build closed-loop battery supply chains.

IndustryClimate Tech
StageSeries D+
IPO StatusPre-IPO
Valuation$3.7B
Total Funding$1.35B
HeadquartersCarson City, NV

Frequently Asked Questions

What are the valuations of OpenAI and Redwood Materials? +

OpenAI is valued at $852B. Redwood Materials is valued at $3.7B. Both valuations are based on the most recent private funding rounds tracked by TechStackIPO.

How much has each company raised? +

OpenAI has raised $55.4B. Redwood Materials has raised $1.35B.

What is the IPO status of OpenAI and Redwood Materials? +

OpenAI is currently pre-IPO. Redwood Materials is currently pre-IPO. Track both on TechStackIPO for S-1 filings and IPO announcements.

Are OpenAI and Redwood Materials in the same sector? +

OpenAI operates in Artificial Intelligence, while Redwood Materials operates in Climate Tech.

What are the main differences between OpenAI and Redwood Materials? +

OpenAI is a Artificial Intelligence company valued at $852B with $55.4B raised. Redwood Materials is a Climate Tech company valued at $3.7B with $1.35B raised. See TechStackIPO's full side-by-side comparison for IPO readiness scores, funding timelines, and investor data.

How can I invest in OpenAI or Redwood Materials before their IPO? +

Accredited investors can access pre-IPO shares in OpenAI and Redwood Materials 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.