# Arize AI vs Braintrust: who uses which

On usedby, 35 companies use Arize AI and 39 use Braintrust. 1 company uses both, including Instacart. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-07: 69 of 74 public lines checked.

## Side by side

|  | [Arize AI](https://www.usedby.ai/tools/arize-ai.md) | [Braintrust](https://www.usedby.ai/tools/braintrust.md) |
|---|---|---|
| Public customers | 35 | 39 |
| Confirmed | 9 | 15 |
| Observed | 26 | 24 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Marketing Tech (4), Travel & Hospitality (4), DevTools & Infrastructure (2) | DevTools & Infrastructure (10), Fintech & Payments (4), Artificial Intelligence (2) |
| Category | LLM Ops & Frameworks | LLM Ops & Frameworks |
| Free trial | Free trial or free plan available. ([arize.com](https://arize.com/pricing/), checked 2026-10-04) | Free trial or free plan available. ([braintrust.dev](https://www.braintrust.dev/pricing), checked 2026-10-07) |
| Integrations | Antigravity, Claude Code, Codex, GitHub Copilot, Cursor, Devin, Gemini CLI, Kiro, Oh My Pi, OpenCode ([arize.com](https://arize.com/docs/ax/integrations), checked 2026-10-04) | OpenTelemetry, Vercel AI SDK, Claude Agent SDK, OpenAI Agents SDK, LlamaIndex, CrewAI, AgentScope, LangChain, LangSmith, LangGraph ([braintrust.dev](https://www.braintrust.dev/docs/integrations), checked 2026-10-07) |
| Security | — | SOC 2 Type II ([trust.braintrust.dev](https://trust.braintrust.dev/), checked 2026-10-07) |
| Data processing terms | — | A data processing agreement is available. ([trust.braintrust.dev](https://trust.braintrust.dev/), checked 2026-10-07) |
| Pricing | — | Starter: $0 / month; Pro: $249 / month; Enterprise: contact sales ([braintrust.dev](https://www.braintrust.dev/pricing), checked 2026-10-07) |

## Companies named on both

Confirmed or observed on each side.

| Company |
|---|
| [Instacart](https://www.usedby.ai/companies/instacart.md) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Arize AI: [Handshake](https://www.usedby.ai/case-studies/handshake-arize-ai.md): **15+**: “The approach enabled 15+ production use cases in the first six months” (captured by usedby 2026-10-05)
- Arize AI: [Booking.com](https://www.usedby.ai/case-studies/booking-com-arize-ai.md): story without a checked figure. (captured by usedby 2026-10-05)
- Braintrust: [Rex](https://www.usedby.ai/case-studies/rex-braintrust.md): **30-min**: “Continuous signal, 30-min fix cycles” (captured by usedby 2026-10-06)
- Braintrust: [Navan](https://www.usedby.ai/case-studies/navan-braintrust.md): story without a checked figure. (captured by usedby 2026-10-06)

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Source: https://www.usedby.ai/compare/arize-ai-vs-braintrust · How we check: https://www.usedby.ai/methodology