Langfuse vs Portkey
Side-by-side from the Top 11 ranking of Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026. Last verified May 31, 2026.
The short answer
Langfuse ranks higher on Top 11 (#4 vs #6) for AI engineers managing and versioning production prompts. Best for open-source tracing and observability of complex LLM chains.
At a glance
| Langfuse | Portkey | |
|---|---|---|
| Top 11 rank | #4 / Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026 | #6 / Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026 |
| Score (out of 9.4) | 8.7 | 8.2 |
| Best for | Open-source observability and tracing | AI gateway and prompt management |
| Pricing | $$ ($0 to $1,500+/mo) | $$ ($100 to $1,000+/mo) |
| HQ | Berlin, Germany | Bengaluru, India |
| Founded | 2023 | 2023 |
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.