LangSmith43 customers
Used by 43 companies on usedby. 1 also uses Arize AI. Compare Arize AI and LangSmith
Source: langchain.com, latest capture Oct 3, 2026.
6 of the 35 Arize AI customers on usedby also use another tool on this list. The tools most often used by the same companies are LangSmith (1 shared, 43 customers in all), Braintrust (1 shared, 39 customers in all), and Portkey (1 shared, 22 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.
6of 35
Arize AI customers also use another tool on this list
LangSmith shares the most companies with Arize AI: 1 company uses 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 Arize AI. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Arize AI | Customers | Compare |
|---|---|---|---|---|
| 1 | LangSmith | 1 | 43 | Compare Arize AI vs LangSmith |
| 2 |  BraintrustMostly DevTools & Infrastructure (10) | 1 | 39 | Compare Arize AI vs Braintrust |
| 3 |  Portkey | 1 | 22 | Compare Arize AI vs Portkey |
| 4 |  Comet Opik | 1 | 17 | Compare Arize AI vs Comet Opik |
| 5 |  Mem0 | 1 | 16 | Compare Arize AI vs Mem0 |
| 6 |  CrewAIMostly Consumer Goods (3) | 1 | 13 | Compare Arize AI vs CrewAI |
| 7 |  Flowise | 1 | 13 | Compare Arize AI vs Flowise |
Braintrust39 customers
Used by 39 companies on usedby, 10 of them in DevTools & Infrastructure. 1 also uses Arize AI. Compare Arize AI and Braintrust
Source: braintrust.dev, latest capture Oct 6, 2026.
Portkey22 customers
Used by 22 companies on usedby. 1 also uses Arize AI. Compare Arize AI and Portkey
Source: portkey.ai, latest capture Oct 5, 2026.
Comet Opik17 customers
Used by 17 companies on usedby. 1 also uses Arize AI. Compare Arize AI and Comet Opik
Source: comet.com, latest capture Oct 7, 2026.
Mem016 customers
Used by 16 companies on usedby. 1 also uses Arize AI. Compare Arize AI and Mem0
Source: mem0.ai, latest capture Oct 7, 2026.
CrewAI13 customers
Used by 13 companies on usedby, 3 of them in Consumer Goods. 1 also uses Arize AI. Compare Arize AI and CrewAI
Source: crewai.com, latest capture Oct 6, 2026.
Other LLM Ops & Frameworks tools on usedby
Same category, with public customers, but no company named with Arize AI yet.
Langchain32 customers
TrueFoundry27 customers
E2B23 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 Arize AI alternatives
Which tool shares the most customers with Arize AI?
LangSmith: 1 company uses both on usedby. LangSmith has 43 customers in all. See who uses LangSmith.
Do Arize AI customers use other tools too?
6 of the 35 Arize AI customers on usedby also use another tool on this list. LangSmith shares the most: 1.
Which of Arize AI 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 Arize AI 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 Arize AI 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.