LLM

Respan

AI observability platform — trace, evaluate, and monitor LLM agents in production with automated issue detection.

respan.ai

Verified API available Free tier

Quick facts
What is it	AI observability platform — trace, evaluate, and monitor LLM agents in production with automated issue detection.
Pricing	Freemium — from $199/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	debugging production AI agent failures, evaluating LLM performance against business metrics
Domain registered	2026

Data updated Aug. 1, 2026

What does Respan do?

Respan is an AI observability platform designed specifically for teams building and deploying LLM agents. It provides comprehensive tracing capabilities that capture every step of agent execution—from initial prompts and tool calls to final responses—with full context from real production traffic. This gives developers complete visibility into what their AI systems are actually doing, making debugging faster and more precise.

The platform stands out by integrating evaluation workflows that combine human review, code-based checks, and LLM judges into a single system. Instead of maintaining separate evaluation pipelines, teams can define quality metrics first and then build evaluation flows around them. Respan also offers version control for prompts, tools, and workflows, allowing teams to test changes against real production baselines before deployment through a unified gateway that supports 500+ models.

This tool benefits engineering teams working on production AI systems that need reliable monitoring and debugging capabilities. It's particularly valuable for companies scaling their AI operations, as evidenced by customers who've grown from 5 million to 500 million monthly API calls while using Respan to resolve production issues 10 times faster. The platform helps catch behavior shifts before they become problems, ensuring AI systems perform as expected despite changing prompts, models, and tools.

Developer Tools LLM Testing

#agent-monitoring#ai infrastructure#eval-workflows#llm observability#production debugging#prompt versioning

Key features

What makes it stand out

End-to-end execution tracing captures every prompt, tool call, and response with full context

Combined evaluation workflows integrate human review, code checks, and LLM judges in one system

Version control for prompts, tools, and workflows with baseline comparison against production data

Single deployment gateway with access to 500+ models and rollout controls

Custom monitoring dashboards with 80+ graph types and real-time alerting

Who is Respan for?

Who benefits most from this tool

debugging production AI agent failures

evaluating LLM performance against business metrics

monitoring AI system behavior shifts over time

Pricing

Free tier available — start without a credit card

Pro

Free

100,000 logs
1,000 scores
5 prompts
5 datasets
2 evaluators
1 workspaces
Full platform
100k logs
1k scores
5 datasets
2 evaluators
5 prompts

Team

$199.0/month

Everything in Pro, plus:

Everything in Pro
Unlimited datasets
Unlimited evaluators
Unlimited prompts
Private Slack channel
SOC 2 report

Enterprise

Custom

Everything in Team, plus:

Everything in Team
Custom packages
Volume discount
Custom SLAs
Dedicated support engineer
HIPAA BAA

Trust & presence

Domain Domain registered 2026

Gallery

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