# ChatGPT vs Claude: who uses which

On usedby, 40 companies use ChatGPT and 73 use Claude. 4 companies use both, including BCG, Shopify and Intercom. 6 more companies appear on both with a job post (the weakest proof) on one side, counted apart. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-08: 49 of 113 public lines checked.

## Side by side

|  | [ChatGPT](https://www.usedby.ai/tools/chatgpt.md) | [Claude](https://www.usedby.ai/tools/claude.md) |
|---|---|---|
| Public customers | 40 | 73 |
| Confirmed | 0 | 16 |
| Observed | 35 | 32 |
| Signals (job posts) | 5 | 25 |
| Top industries of customers | DevTools & Infrastructure (4), Banking & Mortgages (3), Fintech & Payments (3) | DevTools & Infrastructure (9), Data & Analytics (7), Fintech & Payments (7) |
| Category | Foundation Models (LLMs) | Foundation Models (LLMs) |
| Free trial | Free trial or free plan available. ([chatgpt.com](https://chatgpt.com/pricing/), checked 2026-10-04) | — |
| Integrations | Gmail, Remote Desktop Commander, Google Drive, GitHub, Outlook Email, Slack, Notion, Google Calendar, Canva, Dropbox, Shopify, Figma ([chatgpt.com](https://chatgpt.com/plugins), checked 2026-10-04) | — |
| Pricing | Free: $0 / month; Go: $8 / month; Plus: $20 / month; Pro: $100 / month ([chatgpt.com](https://chatgpt.com/pricing/), checked 2026-10-04) | — |
| Security | — | SOC 2 Type II, ISO 27001, ISO 42001, HIPAA, FedRAMP, Cyber Essentials ([trust.anthropic.com](https://trust.anthropic.com/), checked 2026-10-04) |
| Data processing terms | — | A data processing agreement is available. ([trust.anthropic.com](https://trust.anthropic.com/), checked 2026-10-04) |

## Companies named on both

Confirmed or observed on each side. The first public proof is not an adoption date.

| Company | First public proof, Claude |
|---|---|
| [BCG](https://www.usedby.ai/companies/bcg.md) | — |
| [Shopify](https://www.usedby.ai/companies/shopify.md) | On or before January 2026 |
| [Intercom](https://www.usedby.ai/companies/intercom.md) | On or before September 2025 |
| [Notion](https://www.usedby.ai/companies/notion.md) | On or before September 2025 |

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Source: https://www.usedby.ai/compare/chatgpt-vs-claude · How we check: https://www.usedby.ai/methodology