Opik vs LangWatch

Opik9.1Visit LangWatch8.8Visit

Higher score Opik #4 in LLM Observability Tools 9.1/10 Free plan Free plan✓ 6 of 6 features Visit Opik

vs

LangWatch #7 in LLM Observability Tools 8.8/10 Free plan Free plan✓ 6 of 6 features Visit LangWatch

• Opik fits best

  Cost-conscious teams needing full-stack observability

• LangWatch fits best

  Teams needing affordable agent and RAG visibility

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Side by side

Feature	Opik 9.1/10 Visit ↗	LangWatch 8.8/10 Visit ↗
At a glance
Editor score	9.1	8.8
Ranking	#4 in LLM Observability Tools	#7 in LLM Observability Tools
Best for	Cost-conscious teams needing full-stack observability	Teams needing affordable agent and RAG visibility
Pricing model	Free plan + paid	Free plan + paid
Starting price	$19/mo	€29/seat/mo
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web, Linux
Support	Email, Community, Docs	Community, Live chat, Docs
Compliance	SOC 2, ISO 27001, GDPR, HIPAA, SSO/SAML	SOC 2, ISO 27001, GDPR, 2FA
Integrations	40+ integrations	26+ integrations
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Opik 6/6 · LangWatch 6/6
LLM tracing	✓	✓
LLM evaluations	✓	✓
Prompt management	✓	✓
Agent tracing	✓	✓
Retrieval tracing	✓	✓
Token cost tracking	✓	✓
Specs
Deployment options	Both	Both
Our review
Pros	Free self-hosted and cloud options cover core observability needs Traces model calls, tools, retrieval steps, and agent actions Tracks evaluations, prompts, human feedback, tokens, and model costs	Nested agent tracing with execution graphs and cost tracking Evaluations, guardrails, simulations, and prompt versioning in one platform Broad SDK, framework, OpenTelemetry, and self-hosted deployment support
Cons	Enterprise pricing is custom rather than published Self-hosted deployment requires your own infrastructure Its broad scope may exceed teams needing only basic tracing	Developer includes 50k events monthly and 14-day data access Enterprise capabilities require a custom plan The feature set may exceed the needs of teams wanting basic tracing only
Our verdict	Opik is an open-source LLM observability and evaluation platform from Comet for teams building chatbots, retrieval-augmented generation pipelines, and multi-step agents. It records model calls, tool invocations, retrieval steps, and agent… Read the review →	LangWatch is an LLM engineering and observability platform for teams building AI agents and applications. It records LLM and agent traces with nested spans and execution graphs, tracks tokens, model costs, and latency, and captures RAG… Read the review →

Strengths and trade-offs

• Opik — where it wins

  • Free self-hosted and cloud options cover core observability needs
  • Traces model calls, tools, retrieval steps, and agent actions
  • Tracks evaluations, prompts, human feedback, tokens, and model costs

  Where it doesn't

  • Enterprise pricing is custom rather than published
  • Self-hosted deployment requires your own infrastructure
  • Its broad scope may exceed teams needing only basic tracing

• LangWatch — where it wins

  • Nested agent tracing with execution graphs and cost tracking
  • Evaluations, guardrails, simulations, and prompt versioning in one platform
  • Broad SDK, framework, OpenTelemetry, and self-hosted deployment support

  Where it doesn't

  • Developer includes 50k events monthly and 14-day data access
  • Enterprise capabilities require a custom plan
  • The feature set may exceed the needs of teams wanting basic tracing only

• Opik9.1/10 · Free plan

  A broad, cost-conscious stack for tracing, evaluation, prompts, monitoring, and agent debugging.

  Visit OpikFull verdict →
• LangWatch8.8/10 · Free plan

  Affordable visibility for agents, RAG pipelines, evaluations, and LLM costs.

  Visit LangWatchFull verdict →