These tools competes with
Weights & BiasesvsLangfuse
ML experiment tracking and LLM evaluation versus OSS LLM engineering platform
Compare interactively in Explore →Choose Weights & Biases when…
- •You're running ML experiments alongside LLM work
- •Model training tracking and artifact management are needed
- •You're a data scientist who uses Weights & Biases already
Choose Langfuse when…
- •You want open-source LLM observability
- •Self-hosting your tracing stack is important
- •You need cost tracking across models and users
Side-by-side comparison
Field
Weights & Biases
Langfuse
Category
Prompt & Eval
LLM Infrastructure
Type
Commercial
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Teams: $50/user/mo
Cloud: $59/mo
GitHub Stars
—
⭐ 7,000
Health
—
●80 — Active
Weights & Biases
Industry-standard ML experiment tracking platform with LLM-specific tools for prompt evaluation, fine-tuning monitoring, and dataset versioning.
Shared Connections1 tools both integrate with
Only Weights & Biases (1)
Langfuse
Only Langfuse (29)
Claude CodeCrewAILangGraphLangChainCursorLlamaIndexOpenHandsDifyMastraAutoGen
Explore the full AI landscape
See how Weights & Biases and Langfuse fit into the bigger picture — 207 tools, 452 relationships, all mapped.