Weights & Biases vs Langfuse

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Weights & Biases
vs
Competitor 1
Langfuse
Competitor 2
Competitor 3
Suggested competitors for Weights & Biases: Respan95% Arize Phoenix86% Portkey85% Predictionguard84% FireHydrant84% Helicone83% Weaviate83% Alma by Olivares AI82%
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2 tools · best value per row highlighted
Your tool Weights & Biases
wandb.ai
Weights & Biases is an AI developer platform for tracking, evaluating and debugging machine learning models and LLM applications.
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Competitor Langfuse
langfuse.com
Langfuse is an open-source platform for observability and evaluation of AI agents and LLM applications.
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Traffic estimated monthly website traffic
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Bounce rate lower is better
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Pricing
Model
Freemium
Freemium
Starting price
$60per month · free tier available
$29per month · free tier available
Free tier
Free trial
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API access
Plans
Free FreePro $60/moEnterprise Custom
Hobby FreeCore $29/moPro $199/moTeams add-on $300/mo+1 more
Capabilities input → output
Input
CodeData
DataText
Output
Data
Data
Skill level
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
2
1
AI system monitoring
Developer tools
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.