Side-by-side IPO readiness, funding history, and valuation comparison. Data sourced by TechStackIPO.
Scores, valuations, and signals for OpenAI, Weights & Biases, 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 |
Weights & Biases (W&B) is the machine learning experimentation platform enabling data scientists to track experiments, evaluate models, compare results, and collaborate on AI development. Valued at $1.25B with $200M raised, W&B has 1M+ users and serves research teams at Google, OpenAI, Anthropic, and Salesforce. Major AI infrastructure IPO candidate competing with MLflow and Neptune.ai in the $30B+ MLops market.
| Industry | Artificial Intelligence |
| Stage | Series F |
| IPO Status | Pre-IPO |
| Valuation | $2.5B |
| Total Funding | $750M |
| Headquarters | San Francisco, CA |
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OpenAI is valued at $920.0B. Weights & Biases is valued at $2.5B. Both figures are based on the most recent funding rounds tracked by TechStackIPO.
OpenAI reported 12700000000 arr revenue in 2025. Weights & Biases'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. Weights & Biases is currently pre-IPO. Track both companies on TechStackIPO for S-1 filings, roadshow announcements, and IPO date updates.
OpenAI has raised $65.4B. Weights & Biases has raised $750M.
OpenAI operates in Artificial Intelligence, while Weights & Biases operates in Artificial Intelligence.
OpenAI is a Artificial Intelligence company valued at $920.0B with $65.4B raised. Weights & Biases is a Artificial Intelligence company valued at $2.5B with $750M 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 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.