Arize AI vs Langfuse
Which Developer Tools AI tool is better in 2026?
Arize AI
The AI & Agent Engineering Platform for development, observability, and evaluation of LLM applications.
Langfuse
Open source LLM engineering platform for debugging, analyzing, and iterating on LLM applications
Side-by-side
| Arize AI | Langfuse | |
|---|---|---|
| Tagline | The AI & Agent Engineering Platform for development, observability, and evaluation of LLM applications. | Open source LLM engineering platform for debugging, analyzing, and iterating on LLM applications |
| Founded | — | 2023 |
| HQ | — | DE |
| Employees | — | 11-50 |
| Total funding | Undisclosed | Undisclosed |
| Latest round | — | — |
| Valuation | — | — |
| Cheapest paid plan | — | Core · $29/mo |
| Free plan | ✗ | ✓ Hobby |
| Free trial | ✗ | ✗ |
| Top tier price | Enterprise · Contact sales | Pro · $199/mo |
| Pricing summary | 1 published plans | 4 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Arize AI and Langfuse.
| Capability | Arize AI | Langfuse |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 1 (Python) | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Arize AI
- Strong in AI Developer Tools
🔵 Strengths of Langfuse
- Higher Neuron score (29 vs 12)
- Offers a free plan
- Lower starting price ($29/mo)
- Newer company (2023)
Which should you choose?
Choose Langfuse if price matters most — it starts at Free · From $29/mo, which is friendlier for teams watching burn. Both AI Developer Tools tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Langfuse if you want the most established option — it has raised Undisclosed, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Arize AI vs Langfuse — which is better?
It depends on your priority. Arize AI is the leaner option; Langfuse is cheaper to start. See the side-by-side table above.
Is Arize AI cheaper than Langfuse?
No — Langfuse's cheapest paid plan is Core · $29/mo, while Arize AI's is Enterprise · Contact sales.
Do Arize AI and Langfuse offer free plans?
Arize AI: Paid only. Langfuse: Yes, has a free plan.
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