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Respan: Route, track, and debug all LLM traffic. Below are the tools in our catalog that cover the same features, grouped by the job they replace, with pricing side by side.
Replaces Respan for: Unified LLM gateway · Tracing SDK with decorators · Flexible logging modes
Open-source AI gateway routing requests to any model or GPU at provider price
Unified API endpoint that routes LLM requests across multiple providers with cost tracking
Intelligent routing layer for AI inference requests across multiple providers
AI gateway providing failover routing, PII scrubbing and semantic caching
Replaces Respan for: Token, cost, and latency analytics · Rich attribution metadata
Unified OpenAI-compatible API to route, manage, and analyze LLM requests across 25+ providers for multi-model app development.
Unified API gateway for routing and managing AI model requests
A platform for building, managing, and integrating LLM applications with over 200 model options and monitoring tools.
An LLM Gateway that functions as an intelligent middleware for all your LLM needs.
Replaces Respan for: Tracing SDK with decorators · Rich attribution metadata
Debug, evaluate, and optimize LLM applications with tracing, prompt management, and metrics.
Centralized observability and governance platform for AI agents
Runtime control and observability for production AI agents
Open-source LLM-ops platform for versioning prompts, tracing AI calls, and managing production aliases without redeploying applications.
| Tool | Pricing | Monthly visits | Compare |
|---|---|---|---|
| Respan | Free Trial, from Free | 107K | |
| Experiential Labs | Subscription, from $20/mo | 2.3M | Compare |
| polyrouter | Paid, from Free | — | Compare |
| Inferect | Free Trial, from $149/mo | — | Compare |
| SentinelGateway | Subscription, from $29/mo | — | Compare |
| LLM Gateway | Freemium, from Free | 197K | Compare |
| AI Gateway | Paid, from Free | 93K | Compare |
| Keywords AI | Freemium, from Free | 1.8K | Compare |
| Requesty LLM Gateway | Freemium, from Free | — | Compare |
| Langfuse | Paid, from $4 | 723K | Compare |
| Traccia | Free Trial, from Free | 2.6K | Compare |
| Observyze | Freemium, from $79/mo | — | Compare |
| Acrux Core | Freemium, from Free | — | Compare |
