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

AI teams building and testing LLM-powered agents

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

Open-source LLMOps platform for testing, evaluating, and monitoring AI agents. Differentiated by multi-turn agent simulation testing.

Starting Price

Free

Free Trial

Yes

Free Version

Yes

Free Version

Yes

Website

agentops.ai

Website

langwatch.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

LangWatch

Multi-turn agent simulation testing
LLM evaluation with custom evaluators
OpenTelemetry-native tracing
Prompt & model management
Dataset management from production traces

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

LangWatch

Pros

Unique agent simulation testing via Scenario framework — enables multi-turn, stateful agent testing unmatched by LangSmith or Langfuse
Fully open-source with MIT license and no feature gating on self-hosted deployments
All-in-one platform combining tracing, evaluation, prompt management, and PII redaction
Framework-agnostic with OpenTelemetry-native integration across all major agent frameworks
Enterprise-ready with ISO 27001, SOC2, GDPR compliance, and on-prem deployment options

Cons

AgentOps or LangWatch — 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 LangWatch if you wantChoose if you want

Agent testing before deployment
Hallucination detection
Regression testing for LLM apps
Production monitoring
Prompt optimization

Compare AgentOps and LangWatch 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 LangWatch (2026)

Overview

Key features

Strengths and tradeoffs

AgentOps or LangWatch — which should you choose?

Compare AgentOps and LangWatch on your own traffic

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