These tools competes with
LangfusevsPromptLayer
OSS LLM engineering platform versus Prompt versioning, logging, and A/B testing
Compare interactively in Explore →Choose Langfuse when…
- •You want open-source LLM observability
- •Self-hosting your tracing stack is important
- •You need cost tracking across models and users
Choose PromptLayer when…
- •You want prompt versioning and request logging
- •Prompt history, replay, and A/B testing matter
- •You need visibility into what prompts are running in production
Side-by-side comparison
Field
Langfuse
PromptLayer
Category
LLM Infrastructure
Prompt & Eval
Type
Open Source
Commercial
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: $59/mo
Pro: Paid
GitHub Stars
⭐ 7,000
—
Health
●80 — Active
—
Langfuse
Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.
PromptLayer
Log every LLM request, version prompts, and run A/B tests. Provides a visual interface for prompt engineering teams to iterate collaboratively.
Only Langfuse (30)
Claude CodeCrewAILangGraphLangChainCursorLlamaIndexOpenHandsDifyMastraAutoGen
Only PromptLayer (2)
LangfuseHumanloop
Explore the full AI landscape
See how Langfuse and PromptLayer fit into the bigger picture — 207 tools, 452 relationships, all mapped.