Comet Opik17 customers
Used by 17 companies on usedby. 2 also use LangSmith. Compare LangSmith and Comet Opik
Source: comet.com, latest capture Oct 7, 2026.
LangSmith alternatives
What LangSmith customers also use, ranked by public customers.
6 of the 43 LangSmith customers on usedby also use another tool on this list. The tools most often used by the same companies are Comet Opik (2 shared, 17 customers in all), Galileo (2 shared, 13 customers in all), and Arize AI (1 shared, 35 customers in all).Latest check Oct 7, 2026: 263 of 275 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.
6of 43
LangSmith customers also use another tool on this list
Comet Opik shares the most companies with LangSmith: 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 LangSmith. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with LangSmith | Customers | Compare |
|---|---|---|---|---|
| 1 | Comet Opik | 2 | 17 | Compare LangSmith vs Comet Opik |
| 2 |  GalileoMostly Telecommunications (4) | 2 | 13 | Compare LangSmith vs Galileo |
| 3 |  Arize AI | 1 | 35 | Compare LangSmith vs Arize AI |
| 4 |  TrueFoundry | 1 | 27 | Compare LangSmith vs TrueFoundry |
| 5 |  E2BMostly Artificial Intelligence (4) | 1 | 23 | Compare LangSmith vs E2B |
| 6 |  Mem0 | 1 | 16 | Compare LangSmith vs Mem0 |
| 7 |  Flowise | 1 | 13 | Compare LangSmith vs Flowise |
Galileo13 customers
Used by 13 companies on usedby, 4 of them in Telecommunications. 2 also use LangSmith. Compare LangSmith and Galileo
Source: galileo.ai, latest capture Oct 6, 2026.
Arize AI35 customers
Used by 35 companies on usedby. 1 also uses LangSmith. Compare LangSmith and Arize AI
Source: arize.com, latest capture Oct 5, 2026.
TrueFoundry27 customers
Used by 27 companies on usedby. 1 also uses LangSmith. Compare LangSmith and TrueFoundry
Source: truefoundry.com, latest capture Oct 6, 2026.
E2B23 customers
Used by 23 companies on usedby, 4 of them in Artificial Intelligence. 1 also uses LangSmith. Compare LangSmith and E2B
Source: e2b.dev, latest capture Oct 6, 2026.
Mem016 customers
Used by 16 companies on usedby. 1 also uses LangSmith. Compare LangSmith and Mem0
Source: mem0.ai, latest capture Oct 7, 2026.
Other LLM Ops & Frameworks tools on usedby
Same category, with public customers, but no company named with LangSmith yet.
Braintrust39 customers
Portkey22 customers
CrewAI13 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% | Arize AI11% | 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 LangSmith alternatives
Which tool shares the most customers with LangSmith?
Comet Opik: 2 companies use both on usedby. Comet Opik has 17 customers in all. See who uses Comet Opik.
Do LangSmith customers use other tools too?
6 of the 43 LangSmith customers on usedby also use another tool on this list. Comet Opik shares the most: 2.
Which of LangSmith 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 LangSmith 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 LangSmith 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.