LangSmith43 customers
Used by 43 companies on usedby. 2 also use Comet Opik. Compare Comet Opik and LangSmith
Source: langchain.com, latest capture Oct 3, 2026.
Comet Opik alternatives
What Comet Opik customers also use, ranked by public customers.
2 of the 17 Comet Opik customers on usedby also use another tool on this list. The tools most often used by the same companies are LangSmith (2 shared, 43 customers in all), Arize AI (1 shared, 35 customers in all), and Langchain (1 shared, 32 customers in all).Latest check Oct 7, 2026: 295 of 307 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.
2of 17
Comet Opik customers also use another tool on this list
LangSmith shares the most companies with Comet Opik: 2 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 Comet Opik. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Comet Opik | Customers | Compare |
|---|---|---|---|---|
| 1 | LangSmith | 2 | 43 | Compare Comet Opik vs LangSmith |
| 2 |  Arize AI | 1 | 35 | Compare Comet Opik vs Arize AI |
| 3 |  Langchain | 1 | 32 | Compare Comet Opik vs Langchain |
Arize AI35 customers
Used by 35 companies on usedby. 1 also uses Comet Opik. Compare Comet Opik and Arize AI
Source: arize.com, latest capture Oct 5, 2026.
Langchain32 customers
Used by 32 companies on usedby. 1 also uses Comet Opik. Compare Comet Opik and Langchain
Source: langchain.com, latest capture Oct 3, 2026.
Other LLM Ops & Frameworks tools on usedby
Same category, with public customers, but no company named with Comet Opik yet.
Braintrust39 customers
TrueFoundry27 customers
E2B23 customers
Portkey22 customers
Mem016 customers
CrewAI13 customers
Flowise13 customers
Galileo13 customers
Fiddler AI10 customers
Contextual AI4 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 |
|---|---|---|---|
| Artificial Intelligence | E2B27% | Braintrust13% | 15 companies |
| DevTools & Infrastructure | Braintrust67% | Arize AI13% | 15 companies |
| Fintech & Payments | Braintrust29% | LangSmith29% | 14 companies |
| IT Services & System Integration | Arize AI20% | Mem020% | 10 companies |
| HR & Recruiting | LangSmith56% | Langchain44% | 9 companies |
Read the first row as: among the 15 Artificial Intelligence companies on usedby that use one of these tools, 27% use E2B. Shares can add up to more than 100% because some companies use two tools.
Questions about Comet Opik alternatives
Which tool shares the most customers with Comet Opik?
LangSmith: 2 companies use both on usedby. LangSmith has 43 customers in all. See who uses LangSmith.
Do Comet Opik customers use other tools too?
2 of the 17 Comet Opik customers on usedby also use another tool on this list. LangSmith shares the most: 2.
Which of Comet Opik and its alternatives do Artificial Intelligence companies on usedby use?
Among the 15 Artificial Intelligence companies on usedby that use one of these tools, 27% use E2B. Braintrust comes next, with 13%.
Which of Comet Opik and its alternatives do DevTools & Infrastructure companies on usedby use?
Among the 15 DevTools & Infrastructure companies on usedby that use one of these tools, 67% use Braintrust. Arize AI comes next, with 13%.
How does usedby rank Comet Opik 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.