Langfuse vs Portkey
Side-by-side from the Top 11 ranking of The 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 / The 11 Best Prompt Engineering & Prompt Management Tools (2026) | #6 / The 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 |
Langfuse
Best for open-source tracing and observability of complex LLM chains.
langfuse.com/See full entry in The 11 Best Prompt Engineering & Prompt Management Tools (2026)
Portkey
Combines a robust AI gateway with solid prompt management tools.
portkey.ai/See full entry in The 11 Best Prompt Engineering & Prompt Management Tools (2026)
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.