Langfuse vs Prometheus
Updated June 2026 · A structured head-to-head comparison.
Open-source metrics and alerting.
The verdict
Both Langfuse and Prometheus are credible ai machine learning tools, and the right pick comes down to your priorities.
Choose Langfuse if you want broader platform coverage. Open-source LLM observability.
Prometheus — Open-source metrics and alerting.
Langfuse vs Prometheus: side by side
| Dimension | Langfuse | Prometheus |
|---|---|---|
| Starting price | Free – $59/mo | Free |
| Free plan | Yes | Yes |
| Pricing model | Freemium | Open source |
| Best for | Ai Developers | Devops Teams, Developers |
| Platforms | Web, Self Hosted, ApiWinner | Self Hosted |
| Rating | 4.6/5 | 4.6/5 |
Langfuse key facts
- Vendor
- Langfuse
- Pricing
- Freemium — Free – $59/mo
- Free tier
- Yes
- Platforms
- Web, Self Hosted, Api
- Best for
- Ai Developers
- Editor rating
- 4.6 / 5
- Founded
- 2023
- Headquarters
- Berlin, Germany
Prometheus key facts
- Vendor
- CNCF
- Pricing
- Open source — Free
- Free tier
- Yes
- Platforms
- Self Hosted
- Best for
- Devops Teams, Developers
- Editor rating
- 4.6 / 5
- Founded
- 2012
- Headquarters
- Open source (CNCF)
Frequently asked questions
Is Langfuse better than Prometheus?
Neither is universally better — Langfuse edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Langfuse or Prometheus cheaper?
Langfuse is the more affordable of the two to get started, at free – $59/mo. Langfuse starts at free – $59/mo; Prometheus starts at free.
Can Langfuse replace Prometheus?
Yes for most teams — both are ai machine learning tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.