✦ AI AI Company Comparison

OpenAI vs Writer — 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 Writer
Valuation$852B$1.9B
Total Funding$55.4B$676M
IPO StatusPre-IPOPre-IPO
SectorArtificial IntelligenceArtificial Intelligence
StagePre-IPOSeries D
HeadquartersSan Francisco, CASan Francisco, CA
CEOSam AltmanMay Habib
The IPO Stack Newsletter

Get Tuesday's IPO moves + one deep-dive in your inbox

Scores, valuations, and signals for OpenAI, Writer, and 370+ companies. 5-min read every Tuesday.

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

Writer

Full-stack enterprise AI platform for deploying AI applications across entire organizations.

IndustryArtificial Intelligence
StageSeries D
IPO StatusPre-IPO
Valuation$1.9B
Total Funding$676M
HeadquartersSan Francisco, CA

Frequently Asked Questions

What are the valuations of OpenAI and Writer? +

OpenAI is valued at $852B. Writer is valued at $1.9B. 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. Writer has raised $676M.

What is the IPO status of OpenAI and Writer? +

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

Are OpenAI and Writer in the same sector? +

OpenAI operates in Artificial Intelligence, while Writer operates in Artificial Intelligence.

What are the main differences between OpenAI and Writer? +

OpenAI is a Artificial Intelligence company valued at $852B with $55.4B raised. Writer is a Artificial Intelligence company valued at $1.9B with $676M 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 Writer before their IPO? +

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