Overview

Rating

10.0 / 10

Rating

Best For

Developers building multi-agent systems with frameworks like CrewAI, AG2, and the OpenAI Agents SDK who want session-level debugging

Best For

Engineering and product teams running AI agents and LLM apps in production

Product Summary

AgentOps is an open-source observability SDK for AI agents, with session replay, time-travel debugging, and cost tracking across 400+ LLMs and frameworks.

Product Summary

Respan is LLM observability built into an AI router: nested traces for every agent run, evals on live production traffic, and a click from any score to its trace.

Starting Price

Free Trial

Yes

Free Version

Yes

Free Version

Yes

Website

agentops.ai

Website

respan.ai

Key features

Core capabilities each platform advertises.

AgentOps

Session replay with time-travel debugging
Decorators for sessions, agents, operations, and workflows
Multi-agent interaction graphs
Cost and token tracking across 400+ LLMs

Respan

Nested traces for every LLM call, tool run, and agent turn
Threads for multi-turn sessions
Online evals on live production traffic
LLM-judge, code, and human evaluators
Datasets from production logs and experiments at scale
Monitors with Slack, email, and webhook alerts
Prompt versioning and deployment without code changes

Strengths and tradeoffs

What each tool does well, and the limitations to keep in mind.

AgentOps

Pros

SDK and dashboard app are both MIT-licensed and self-hostable
Session replay is organized around the full agent run, not single requests
Native integrations with the major agent frameworks, including a built-in CrewAI option

Cons

Evals are limited to custom metrics, with scorecards and an eval playground still on the roadmap
No prompt management or LLM gateway
SSO, SLA, and SOC 2 and HIPAA coverage are Enterprise only
The free tier caps at 5,000 events

Respan

Pros

Every score links to the trace that produced it
Evals run on live production traffic, not only on test sets
Built into the router, so there's no separate gateway to integrate
Monitors alert the moment a metric breaches
Unlimited seats on the free plan

Cons

AgentOps or Respan — which should you choose?

Choose AgentOps if you wantChoose if you want

Debugging multi-agent CrewAI and AG2 systems
Replaying a failed agent session step by step
Tracking LLM spend per agent session

Choose Respan if you wantChoose if you want

Debugging agent failures down to the step that broke
Catching quality regressions before users report them
Turning production failures into test datasets
Testing a prompt or model change against real cases before shipping
Attributing LLM cost to each end customer

Compare AgentOps and Respan on your own traffic

10KFree traces/mo

1,000+Models

5 minSetup

Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.

Try Respan free

AgentOps vs Respan (2026)

Overview

Key features

Strengths and tradeoffs

AgentOps or Respan — which should you choose?

Compare AgentOps and Respan on your own traffic

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