# Arize AI vs Langchain: who uses which

On usedby, 35 companies use Arize AI and 32 use Langchain. No company is listed with both yet. 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: 62 of 67 public lines checked.

## Side by side

|  | [Arize AI](https://www.usedby.ai/tools/arize-ai.md) | [Langchain](https://www.usedby.ai/tools/langchain.md) |
|---|---|---|
| Public customers | 35 | 32 |
| Confirmed | 9 | 13 |
| Observed | 26 | 16 |
| Signals (job posts) | 0 | 3 |
| Top industries of customers | Marketing Tech (4), Travel & Hospitality (4), DevTools & Infrastructure (2) | HR & Recruiting (4), Fintech & Payments (3), Biotech & Pharma (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. ([langchain.com](https://www.langchain.com/pricing), checked 2026-10-04) |
| 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) | — |
| Pricing | — | Developer: $0 seat per month; Plus: $39 seat per month; Enterprise: contact sales ([langchain.com](https://www.langchain.com/pricing), checked 2026-10-04) |

## 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)

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