Arize AI35 customers
Used by 35 companies on usedby. 1 also uses Braintrust. Compare Braintrust and Arize AI
Source: arize.com, latest capture Oct 5, 2026.
Braintrust alternatives
What Braintrust customers also use, ranked by public customers.
3 of the 39 Braintrust customers on usedby also use another tool on this list. The tools most often used by the same companies are Arize AI (1 shared, 35 customers in all), Mem0 (1 shared, 16 customers in all), and Galileo (1 shared, 13 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.
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Braintrust customers also use another tool on this list
Arize AI shares the most companies with Braintrust: 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 Braintrust. A shared customer has a confirmed or observed line on both tools.
| # | Alternative | Shared with Braintrust | Customers | Compare |
|---|---|---|---|---|
| 1 | Arize AI | 1 | 35 | Compare Braintrust vs Arize AI |
| 2 |  Mem0 | 1 | 16 | Compare Braintrust vs Mem0 |
| 3 |  GalileoMostly Telecommunications (4) | 1 | 13 | Compare Braintrust vs Galileo |
Mem016 customers
Used by 16 companies on usedby. 1 also uses Braintrust. Compare Braintrust and Mem0
Source: mem0.ai, latest capture Oct 7, 2026.
Galileo13 customers
Used by 13 companies on usedby, 4 of them in Telecommunications. 1 also uses Braintrust. Compare Braintrust and Galileo
Source: galileo.ai, latest capture Oct 6, 2026.
Other LLM Ops & Frameworks tools on usedby
Same category, with public customers, but no company named with Braintrust yet.
LangSmith43 customers
Langchain32 customers
TrueFoundry27 customers
E2B23 customers
Portkey22 customers
Comet Opik17 customers
CrewAI13 customers
Flowise13 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 Braintrust alternatives
Which tool shares the most customers with Braintrust?
Arize AI: 1 company uses both on usedby. Arize AI has 35 customers in all. See who uses Arize AI.
Do Braintrust customers use other tools too?
3 of the 39 Braintrust customers on usedby also use another tool on this list. Arize AI shares the most: 1.
Which of Braintrust 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 Braintrust 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 Braintrust 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.