Claude73 customers
Used by 73 companies on usedby. 4 also use ChatGPT. Compare ChatGPT and Claude
Source: claude.com, latest capture Oct 2, 2026.
10 of the 40 ChatGPT customers on usedby also use another tool on this list. The tools most often used by the same companies are Claude (4 shared, 73 customers in all), Listen (3 shared, 40 customers in all), and Coveo (2 shared, 44 customers in all).Latest check Oct 8, 2026: 278 of 366 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.
10of 40
ChatGPT customers also use another tool on this list
Claude shares the most companies with ChatGPT: 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 ChatGPT. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with ChatGPT | Customers | Compare |
|---|---|---|---|---|
| 1 | Claude | 4 | 73 | Compare ChatGPT vs Claude |
| 2 |  Listen | 3 | 40 | Compare ChatGPT vs Listen |
| 3 |  Coveo | 2 | 44 | Compare ChatGPT vs Coveo |
| 4 |  AlphaSense | 2 | 27 | Compare ChatGPT vs AlphaSense |
| 5 |  CohereMostly IT Services & System Integration (9) | 2 | 23 | Compare ChatGPT vs Cohere |
| 6 |  Mistral | 1 | 37 | Compare ChatGPT vs Mistral |
| 7 |  PerplexityMostly Fintech & Payments (5) | 1 | 26 | Compare ChatGPT vs Perplexity |
| 8 |  HebbiaMostly Investment & VC (4) | 1 | 14 | |
| 9 |  You.com | 1 | 10 |
Listen40 customers
Used by 40 companies on usedby. 3 also use ChatGPT. Compare ChatGPT and Listen
Source: listenlabs.ai, latest capture Oct 2, 2026.
Coveo44 customers
Used by 44 companies on usedby. 2 also use ChatGPT. Compare ChatGPT and Coveo
Source: coveo.com, latest capture Oct 4, 2026.
AlphaSense27 customers
Used by 27 companies on usedby. 2 also use ChatGPT. Compare ChatGPT and AlphaSense
Source: alpha-sense.com, latest capture Oct 7, 2026.
Cohere23 customers
Used by 23 companies on usedby, 9 of them in IT Services & System Integration. 2 also use ChatGPT. Compare ChatGPT and Cohere
Latest capture across its sources: Oct 2, 2026.
Mistral37 customers
Used by 37 companies on usedby. 1 also uses ChatGPT. Compare ChatGPT and Mistral
Source: mistral.ai, latest capture Oct 2, 2026.
Other Foundation Models (LLMs) tools on usedby
Same category, with public customers, but no company named with ChatGPT yet.
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 | Claude46% |  ChatGPT23% | 13 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 ChatGPT alternatives
Which tool shares the most customers with ChatGPT?
Claude: 4 companies use both on usedby. Claude has 73 customers in all. See who uses Claude.
Do ChatGPT customers use other tools too?
10 of the 40 ChatGPT customers on usedby also use another tool on this list. Claude shares the most: 4.
Which of ChatGPT 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 ChatGPT 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 ChatGPT 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.