79%
arrow_downward16% YoY
#1
Summary
- OpenAI ranks #1 within the Foundational LLMs category, maintaining its position month-over-month.
- As of May 2026, 79% of organizations who have a vendor in the Foundational LLMs category use OpenAI: down 16 percentage points from last year.
- OpenAI has the highest adoption among mid-market companies (86%), compared to enterprise (83%), small-to-medium businesses (78%), and micro-SMB (74%).
- OpenAI key capabilities include large language model APIs, multimodal interfaces, and developer-focused integrations, supporting text generation, image processing, and code completion at enterprise scale.
Are businesses buying OpenAI?
Key stats
79%
arrow_downward16% YoY
Mid-Market, 44%
33%
23%
#2
#2
Adoption Rates by company size
| Company size | Adoption rate |
|---|---|
| SMB | 78% |
| Mid-market | 86% |
| Enterprise | 83% |
About OpenAI
OpenAI is an artificial intelligence research and deployment company developing advanced models like GPT and DALL-E. It aims to ensure that artificial general intelligence benefits all of humanity.
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Have feedback?About this data
These insights come from Ramp’s procurement and renewal data, built on real-world transactions observed across our platform. Figures represent aggregated observations from Ramp Procurement and Renewals activity.
| Date | New adopter share | Competitor switch rate | Dominant FTE segment | Adoption rate (Enterprise) | Adoption rate (Mid-Market) | Adoption rate (SMB) |
|---|---|---|---|---|---|---|
| Apr 2026 | 33% | 23% | Mid-Market, 44% | 83% | 86% | 78% |
| Mar 2026 | 33% | 22% | Mid-Market, 44% | 87% | 88% | 81% |
| Feb 2026 | 43% | 23% | Mid-Market, 44% | 90% | 92% | 86% |
| Jan 2026 | 56% | 24% | Mid-Market, 44% | 94% | 94% | 89% |
| Dec 2025 | 73% | 25% | Mid-Market, 44% | 95% | 94% | 91% |
| Nov 2025 | 72% | 25% | Mid-Market, 44% | 95% | 94% | 92% |
| Oct 2025 | 73% | 25% | Mid-Market, 45% | 95% | 95% | 93% |
| Sep 2025 | 83% | 27% | Mid-Market, 45% | 95% | 95% | 93% |
| Aug 2025 | 83% | 26% | Mid-Market, 45% | 96% | 96% | 93% |
| Jul 2025 | 80% | 26% | Mid-Market, 45% | 95% | 96% | 93% |
| Jun 2025 | 85% | 28% | Mid-Market, 45% | 95% | 97% | 94% |
| May 2025 | 90% | 30% | Mid-Market, 45% | 95% | 97% | 95% |
| Apr 2025 | 94% | 31% | Mid-Market, 46% | 95% | 97% | 95% |
| Mar 2025 | 91% | 26% | Mid-Market, 47% | 95% | 96% | 93% |
| Feb 2025 | 88% | 24% | Mid-Market, 48% | 95% | 96% | 92% |
| Jan 2025 | 86% | 22% | Mid-Market, 47% | 94% | 95% | 92% |
| Dec 2024 | 87% | 21% | Mid-Market, 48% | 94% | 95% | 93% |
| Nov 2024 | 84% | 20% | Mid-Market, 47% | 94% | 96% | 93% |
| Oct 2024 | 85% | 21% | Mid-Market, 47% | 95% | 96% | 93% |
| Sep 2024 | 89% | 21% | Mid-Market, 48% | 97% | 96% | 94% |
| Aug 2024 | 85% | 19% | Mid-Market, 49% | 97% | 96% | 94% |
| Jul 2024 | 83% | 21% | Mid-Market, 48% | 98% | 97% | 95% |
| Jun 2024 | 92% | 31% | Mid-Market, 49% | 98% | 98% | 96% |
| May 2024 | 96% | 31% | Mid-Market, 49% | 98% | 98% | 97% |
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