Respan vs OpenRouter vs Langfuse

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

Your tool
Respan
vs
Competitor 1
OpenRouter
Competitor 2
Langfuse
Competitor 3
Suggested competitors for Respan: Portkey90% Helicone82% Arize Phoenix82% Weights & Biases82% LiteLLM78% Datadog78% Raygun76% Azure AI Foundry76%
Compare
3 tools · best value per row highlighted
Your tool Respan
respan.ai
Building AI apps
Remove
Competitor OpenRouter
openrouter.ai
Every model, one endpoint
Make main Remove
Competitor Langfuse
langfuse.com
Langfuse is an open-source platform for observability and evaluation of AI agents and LLM applications.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
87.3Kvisits/mo
22Mvisits/mo
—
MoM change
▲ 28.5%
▲ 14.6%
—
6-month growth
+881.1%
+39.6%
—
Global rank web
#497,399
#2,023
—
Avg. last 3 months
74.8K
19.5M
—
Bounce rate lower is better
41%
32%
—
Pages / visit
2.5
7.7
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Visit duration
19s
6m 13s
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Traffic sources
● Direct 89% · ● Referral 11%
● Direct 89% · ● Referral 10%
—
RespanOpenRouterLangfuse
05.5M11M16.5M22MRespan · 641Respan · 8.9KRespan · 37.2KRespan · 57.9KRespan · 69.1KRespan · 67.9KRespan · 87.3KOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22M1001K10K100K1M10M100MRespan · 641Respan · 8.9KRespan · 37.2KRespan · 57.9KRespan · 69.1KRespan · 67.9KRespan · 87.3KOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$199per month · free tier available
Free tier
$29per month · free tier available
Free tier
Free trial
–
–
–
API access
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Plans
Free FreeTeam $199/yrEnterprise Custom
Free FreeStandard Custom/moBusiness Custom/moEnterprise Custom
Hobby FreeCore $29/moPro $199/moTeams add-on $300/mo+1 more
Capabilities input → output
Input
DataText
AudioImagesTextVideo
DataText
Output
DataText
AudioImagesTextVideo
Data
Skill level
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI APIAI Developer Tools+1 more
Development & CodeAI APILarge Language Models (LLMs)
Development & CodeProductivity & OfficeAI Developer ToolsAI Monitor
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
5
12
AI system monitoring
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APIs
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LLM testing
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Monitoring
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Prompt management
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Developer tools
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AI observability
–
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LLM gateway
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Large language models
–
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Self hosted
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Application monitoring
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Debugging
–
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Development
–
–
Generative AI evaluation
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–
LLM behavior analysis
–
–
LLM comparison
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–
LLM development
–
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LLM management
–
–
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
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.