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OpenAI Enterprise: Adoption in Fortune 500

ChatGPT crossed from consumer novelty to enterprise infrastructure faster than almost any software before it. By 2026, roughly 92% of Fortune 500 companies use ChatGPT in some capacity, up from about 80% in 2023, with more than 7 million paid workplace seats deployed — a roughly 9x year-over-year increase. This page tracks Fortune 500 penetration, the seat-count ramp, and the one place OpenAI does not lead: enterprise revenue, where Anthropic's Claude reportedly pulled ahead in mid-2025.

4 visualizations 5 sources Last updated June 2026 Free to embed
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Source: OpenAI enterprise disclosures, confirmed via Reuters (2025–2026).
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Chart 1 · Penetration over time

Share of Fortune 500 using ChatGPT

Share of Fortune 500 using ChatGPT

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Source: OpenAI enterprise disclosures via Reuters and getPanto. Share of Fortune 500 reporting ChatGPT use "in some capacity." 2023 figure was OpenAI's "over 80%"; 2026 figure ~92%. Self-reported usage, broadly defined.
Chart 2 · Seat ramp

Paid enterprise workplace seats deployed

Paid enterprise workplace seats (millions)

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Source: OpenAI State of Enterprise AI 2025, via Omnibound. Paid enterprise/Team workplace seats. OpenAI reported 7M+ seats by Dec 2025, up ~9x year-over-year.
Chart 3 · Retention by tier

12-month retention: Enterprise vs Team vs Plus

12-month retention by tier

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Source: Second Talent, citing OpenAI / panel data. 12-month retention by tier: Enterprise 88%, Team 68%, Plus 59%. Higher tiers embed deeper into workflows.
CHART 4 · THE REVENUE EXCEPTION

Consumer vs enterprise: who leads where

Who leads where (indexed, directional)

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Source: Second Talent, summarizing OpenAI and Anthropic disclosures. Illustrative comparison of leadership by dimension. Enterprise-revenue leadership reflects reported mid-2025 crossover; exact figures are not publicly itemized by both firms.

About this data

This page compiles ChatGPT enterprise-adoption figures from OpenAI's own enterprise disclosures (including its State of Enterprise AI material) as reported by Reuters, TechCrunch, and industry trackers, alongside reported comparisons with Anthropic.

The AI Behavior Index is the research arm of OneChat AI, an integrated multi-model AI platform. We compile and analyze data from primary sources to make AI adoption and market trends more accessible to journalists, researchers, and decision-makers.

What "92% of the Fortune 500" does and doesn't mean: the figure counts companies where ChatGPT is used "in some capacity," which ranges from a handful of individual seats to org-wide deployment. It is a measure of reach, not depth — seat counts and retention are better proxies for actual reliance, which is why we show all three.

Methodology notes: enterprise figures are largely company-reported and not independently audited. The OpenAI-vs-Claude enterprise-revenue comparison reflects reported industry estimates of a mid-2025 crossover; neither company fully itemizes enterprise revenue publicly, so Chart 4 is best read as directional.

Sources used on this page:

Corrections or suggestions: research@aibehaviorindex.org

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