✦ AI AI Company Comparison

OpenAI vs Weights & Biases — IPO & Funding Comparison

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

● Data current Last verified: May 24, 2026
Metric OpenAI Weights & Biases
Valuation$852B$1.25B
Total Funding$55.4B$550M
IPO StatusPre-IPOPre-IPO
SectorArtificial IntelligenceArtificial Intelligence
StagePre-IPOSeries D
HeadquartersSan Francisco, CASan Francisco, CA
CEOSam AltmanLukas Biewald
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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

Weights & Biases

MLOps platform for tracking, visualizing, and managing machine learning experiments.

IndustryArtificial Intelligence
StageSeries D
IPO StatusPre-IPO
Valuation$1.25B
Total Funding$550M
HeadquartersSan Francisco, CA

Frequently Asked Questions

What are the valuations of OpenAI and Weights & Biases? +

OpenAI is valued at $852B. Weights & Biases is valued at $1.25B. 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. Weights & Biases has raised $550M.

What is the IPO status of OpenAI and Weights & Biases? +

OpenAI is currently pre-IPO. Weights & Biases is currently pre-IPO. Track both on TechStackIPO for S-1 filings and IPO announcements.

Are OpenAI and Weights & Biases in the same sector? +

OpenAI operates in Artificial Intelligence, while Weights & Biases operates in Artificial Intelligence.

What are the main differences between OpenAI and Weights & Biases? +

OpenAI is a Artificial Intelligence company valued at $852B with $55.4B raised. Weights & Biases is a Artificial Intelligence company valued at $1.25B with $550M 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 Weights & Biases before their IPO? +

Accredited investors can access pre-IPO shares in OpenAI and Weights & Biases 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.