ChatGPT40 customers
Used by 40 companies on usedby. 4 also use Claude. Compare Claude and ChatGPT
Latest capture across its sources: Oct 8, 2026.
9 of the 73 Claude customers on usedby also use another tool on this list. The tools most often used by the same companies are ChatGPT (4 shared, 40 customers in all), Cohere (3 shared, 23 customers in all), and Coveo (2 shared, 44 customers in all).Latest check Oct 8, 2026: 282 of 371 public lines checked. Customer counts include every proof level, job-post signals included. Shared customers are counted on confirmed or observed lines on both tools.
9of 73
Claude customers also use another tool on this list
ChatGPT shares the most companies with Claude: 4 companies use both.
Ranked by shared customers
Tools of the same or a competing category, from another vendor, used by at least one company that also uses Claude. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Claude | Customers | Compare |
|---|---|---|---|---|
| 1 | ChatGPT | 4 | 40 | Compare Claude vs ChatGPT |
| 2 |  CohereMostly IT Services & System Integration (9) | 3 | 23 | Compare Claude vs Cohere |
| 3 |  Coveo | 2 | 44 | Compare Claude vs Coveo |
| 4 |  Mistral | 2 | 37 | Compare Claude vs Mistral |
| 5 |  PerplexityMostly Fintech & Payments (5) | 2 | 26 | Compare Claude vs Perplexity |
| 6 |  Listen | 1 | 40 | Compare Claude vs Listen |
Cohere23 customers
Used by 23 companies on usedby, 9 of them in IT Services & System Integration. 3 also use Claude. Compare Claude and Cohere
Latest capture across its sources: Oct 2, 2026.
Coveo44 customers
Used by 44 companies on usedby. 2 also use Claude. Compare Claude and Coveo
Source: coveo.com, latest capture Oct 4, 2026.
Mistral37 customers
Used by 37 companies on usedby. 2 also use Claude. Compare Claude and Mistral
Source: mistral.ai, latest capture Oct 2, 2026.
Perplexity26 customers
Used by 26 companies on usedby, 5 of them in Fintech & Payments. 2 also use Claude. Compare Claude and Perplexity
Source: perplexity.ai, latest capture Oct 4, 2026.
Listen40 customers
Used by 40 companies on usedby. 1 also uses Claude. Compare Claude and Listen
Source: listenlabs.ai, latest capture Oct 2, 2026.
Other Foundation Models (LLMs) tools on usedby
Same category, with public customers, but no company named with Claude yet.
AlphaSense27 customers
Algolia21 customers
Hebbia14 customers
You.com10 customers
Otio6 customers
OpenAI API5 customers
Sakana AI3 customers
Gemini2 customers
Switch signals
A company that left one vendor's page and appeared on another's.
No switch publishedA switch needs a departure from one vendor's page, seen on two checks in a row, and a dated arrival on another. usedby does not publish departures yet, so no switch shows here.
By industry
Which of these tools the companies on usedby use, by industry. Each row counts the companies of that industry on usedby that use at least one of these tools.
| Industry | Most used | Next | Companies |
|---|---|---|---|
| Fintech & Payments | Perplexity33% |  Claude27% | 15 companies |
| IT Services & System Integration | Cohere60% | Claude20% | 15 companies |
| DevTools & Infrastructure | Claude43% | ChatGPT21% | 14 companies |
| Artificial Intelligence | Claude42% | Perplexity25% | 12 companies |
| Investment & VC | Hebbia33% | Perplexity33% | 12 companies |
Read the first row as: among the 15 Fintech & Payments companies on usedby that use one of these tools, 33% use Perplexity. Shares can add up to more than 100% because some companies use two tools.
Questions about Claude alternatives
Which tool shares the most customers with Claude?
ChatGPT: 4 companies use both on usedby. ChatGPT has 40 customers in all. See who uses ChatGPT.
Do Claude customers use other tools too?
9 of the 73 Claude customers on usedby also use another tool on this list. ChatGPT shares the most: 4.
Which of Claude and its alternatives do Fintech & Payments companies on usedby use?
Among the 15 Fintech & Payments companies on usedby that use one of these tools, 33% use Perplexity. Claude comes next, with 27%.
Which of Claude and its alternatives do IT Services & System Integration companies on usedby use?
Among the 15 IT Services & System Integration companies on usedby that use one of these tools, 60% use Cohere. Claude comes next, with 20%.
How does usedby rank Claude alternatives?
Only tools of the same or a competing category, from another vendor, count. They are ranked by shared customers: companies with a confirmed or observed line on both tools, from public pages, most with a dated capture. Tools with no shared customer are listed apart. Customer counts include every proof level, job-post signals included.