Langfuse vs Respan vs Anyscale vs Arize Phoenix

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

Your tool
Langfuse
vs
Competitor 1
Respan
Competitor 2
Anyscale
Competitor 3
Arize Phoenix
Compare
4 tools · best value per row highlighted
Your tool Langfuse
langfuse.com
Langfuse is an open-source platform for observability and evaluation of AI agents and LLM applications.
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Competitor Respan
respan.ai
Building AI apps
Make main Remove
Competitor Anyscale
anyscale.com
Scale AI effortlessly
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Competitor Arize Phoenix
phoenix.arize.com
Arize Phoenix is an open-source platform for AI observability and evaluation, built by Arize.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
87.3Kvisits/mo
79.1Kvisits/mo
—
MoM change
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▲ 28.5%
▼ 25.4%
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6-month growth
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+881.1%
-21.0%
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Global rank web
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#497,399
#330,039
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Avg. last 3 months
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74.8K
90.4K
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Bounce rate lower is better
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41%
42%
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Pages / visit
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2.5
3.3
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Visit duration
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19s
1m 53s
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Traffic sources
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● Direct 89% · ● Referral 11%
● Direct 81% · ● Referral 15%
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LangfuseRespanAnyscaleArize Phoenix
026.5K53K79.5K106.1KRespan · 641Respan · 8.9KRespan · 37.2KRespan · 57.9KRespan · 69.1KRespan · 67.9KRespan · 87.3KAnyscale · 98.7KAnyscale · 93.3KAnyscale · 86.3KAnyscale · 89.2KAnyscale · 100.1KAnyscale · 67.9KAnyscale · 72KAnyscale · 86KAnyscale · 106.1KAnyscale · 79.1K1001K10K100K1MRespan · 641Respan · 8.9KRespan · 37.2KRespan · 57.9KRespan · 69.1KRespan · 67.9KRespan · 87.3KAnyscale · 98.7KAnyscale · 93.3KAnyscale · 86.3KAnyscale · 89.2KAnyscale · 100.1KAnyscale · 67.9KAnyscale · 72KAnyscale · 86KAnyscale · 106.1KAnyscale · 79.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
$29per month · free tier available
$199per month · free tier available
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$50per month · free tier available
Free tier
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Free trial
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–
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API access
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Plans
Hobby FreeCore $29/moPro $199/moTeams add-on $300/mo+1 more
Free FreeTeam $199/yrEnterprise Custom
Free Trial FreePay-as-you-go Custom/moCommitted Custom/mo
AX Free FreeAX Pro $50/mo
Capabilities input → output
Input
DataText
DataText
CodeData
DataText
Output
Data
DataText
Data
Data
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Development & CodeProductivity & OfficeAI APIAI Developer Tools+1 more
Development & CodeAI APIAI Developer Tools
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
12
9
5
8
AI system monitoring
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LLM testing
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Monitoring
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Developer tools
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AI observability
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Prompt management
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Self hosted
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Generative AI evaluation
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LLM development
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GPU infrastructure
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Model training
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–
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Cloud computing
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–
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APIs
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–
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Application monitoring
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–
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Debugging
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Development
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LLM behavior analysis
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LLM management
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Problem investigation
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Prompts
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Red teaming guidance
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
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.