PromptLayer vs Langfuse
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
PromptLayer ranks higher on Top 11 (#3 vs #4) for AI engineers managing and versioning production prompts. The definitive tool for logging and versioning every prompt request.
At a glance
| PromptLayer | Langfuse | |
|---|---|---|
| Top 11 rank | #3 / Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026 | #4 / Vellum vs Humanloop vs PromptLayer: 11 Best Prompt Engineering & Prompt Management Tools 2026 |
| Score (out of 9.4) | 8.9 | 8.7 |
| Best for | Logging and prompt version history | Open-source observability and tracing |
| Pricing | $$ ($99 to $999/mo) | $$ ($0 to $1,500+/mo) |
| HQ | New York, USA | Berlin, Germany |
| Founded | 2022 | 2023 |
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.