Keywords AI
Route LLM traffic through one gateway, observe calls in traces. But lacks built-in prompt management.
At a glance
Starts at
Free
Includes limited features like 100k logs and 1 evaluator in the free plan.
Free tier
Yes, limited
Platforms
Web, API
Best for
Developers deploying multiple AI models
Not for
Comprehensive prompt optimization needs
4.0 out of 5
Scored by a Toolio reviewer after real useOur verdict
Respan simplifies managing diverse LLMs with a single gateway and detailed observability features. It’s ideal for teams dealing with many models but may be overkill if you focus on simpler projects or have fewer providers to integrate.
✓What it does well
Simplified RoutingSend requests to a single endpoint for multiple models.
Automatic FallbacksFailsafe mechanism ensures no downtime if one model goes down.
Response CachingCaches responses to reduce latency and costs on repeat requests.
✕Where it falls short
Limited PromptsNo dedicated prompt management or optimization features provided.
Insufficient EvaluationOnly supports basic model scoring; lacks detailed evaluation metrics for thorough testing.
Higher Cost for EnterprisesCustom packages and dedicated support come at a premium, making it expensive for larger organizations.
Key features
SDKsSupports multiple SDKs including Python, JS/TS, OpenAI, Vercel AI, etc.
Detailed ObservabilityTracks LLM calls and spends in real-time with full trace coverage.
Flexible PricingOffers a free tier starting at $0 per month, scaling up to custom packages for larger teams.
Advanced Evaluation MetricsSupports detailed model assessment beyond basic scoring.