Weights & Biases vs Langfuse vs Predictionguard

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
Predictionguard
Competitor 3
Suggested competitors for Weights & Biases: Arize Phoenix87% Respan85% Portkey84% Helicone80% Vivgrid80% Amazon SageMaker JumpStart79% Amazon SageMaker78% Haystack78%
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3 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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Competitor Predictionguard
predictionguard.com
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Traffic estimated monthly website traffic
Monthly visits
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6.1Kvisits/mo
MoM change
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▲ 44.6%
6-month growth
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+131.0%
Global rank web
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#3,117,821
Avg. last 3 months
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4.4K
Bounce rate lower is better
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46%
Pages / visit
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2.0
Visit duration
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1m 28s
Traffic sources
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Weights & BiasesLangfusePredictionguard
02K4K6.1K8.1KPredictionguard · 1.4KPredictionguard · 2.9KPredictionguard · 2.7KPredictionguard · 2.6KPredictionguard · 8.1KPredictionguard · 5.4KPredictionguard · 3KPredictionguard · 4.2KPredictionguard · 6.1K1K10KPredictionguard · 1.4KPredictionguard · 2.9KPredictionguard · 2.7KPredictionguard · 2.6KPredictionguard · 8.1KPredictionguard · 5.4KPredictionguard · 3KPredictionguard · 4.2KPredictionguard · 6.1KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$60per month · free tier available
$29per month · free tier available
$6per month · free tier available
Free tier
Free trial
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API access
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Plans
Free FreePro $60/moEnterprise Custom
Hobby FreeCore $29/moPro $199/moTeams add-on $300/mo+1 more
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Capabilities input → output
Input
CodeData
DataText
Text
Output
Data
Data
AppsText
Skill level
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
8
12
6
AI system monitoring
AI observability
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Developer tools
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LLM testing
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Generative AI evaluation
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APIs
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LLM development
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Large language models
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Local AI
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Model training
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Models management
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Monitoring
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Prompt management
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Self hosted
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Debugging
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LLM behavior analysis
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LLM management
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LLM security guidance
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Prompts
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Security monitoring
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
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.