Promptfoo vs Opik

Promptfoo9.2Visit Opik9.0Visit

Higher score Promptfoo #3 in AI LLM Evaluation Tools 9.2/10 Free plan Free plan✓ 0 of 3 features Visit Promptfoo

vs

Opik #5 in AI LLM Evaluation Tools 9.0/10 Free plan Free plan✓ 0 of 3 features Visit Opik

• Promptfoo fits best

  Teams prioritizing testing and red teaming

• Opik fits best

  Teams wanting low-cost open-source evaluation monitoring

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Promptfoo 9.2/10 Visit ↗	Opik 9.0/10 Visit ↗
At a glance
Editor score	9.2	9.0
Ranking	#3 in AI LLM Evaluation Tools	#5 in AI LLM Evaluation Tools
Best for	Teams prioritizing testing and red teaming	Teams wanting low-cost open-source evaluation monitoring
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	$19/mo
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web
Support	Community, Docs	Email, Community, Docs
Compliance	SOC 2, ISO 27001	SOC 2, ISO 27001, GDPR, HIPAA, SSO/SAML
Integrations	12 integrations	40+ integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Promptfoo 0/3 · Opik 0/3
Safety evaluations	Not checked yet	Not checked yet
Prompt versioning	Not checked yet	Not checked yet
API access	Not checked yet	Not checked yet
Specs
Evaluation methods	Not checked yet	Not checked yet
Model support	Not checked yet	Not checked yet
Deployment	Not checked yet	Not checked yet
Our review
Pros	Evaluates prompts, models, RAG pipelines, safety, and vulnerabilities Supports custom metrics, human review, and LLM-as-a-judge grading Connects with major providers, CI tools, observability, and MCP	Open-source deployment with a full AI observability feature set Traces model, tool, retrieval, and agent activity for debugging Supports evaluations, prompt versioning, cost tracking, and human feedback
Cons	Enterprise and On-Premise plans use custom pricing Team collaboration and continuous monitoring require Enterprise Dedicated deployment engineering is limited to On-Premise	Self-hosting requires teams to run the open-source distribution Enterprise capabilities are available through a separate custom-priced tier Its broad feature set may exceed the needs of simple LLM projects
Our verdict	Promptfoo is an open-source CLI and library for evaluating, testing, and red-teaming large-language-model applications. It is designed for teams benchmarking prompts, models, and RAG pipelines, as well as developers checking AI quality,… Read the review →	Opik is an open-source LLM observability and evaluation platform from Comet for teams building chatbots, RAG pipelines, and multi-step agents. It records model calls, tool invocations, retrieval steps, and agent actions, then supports… Read the review →

Strengths and trade-offs

• Promptfoo — where it wins

  • Evaluates prompts, models, RAG pipelines, safety, and vulnerabilities
  • Supports custom metrics, human review, and LLM-as-a-judge grading
  • Connects with major providers, CI tools, observability, and MCP

  Where it doesn't

  • Enterprise and On-Premise plans use custom pricing
  • Team collaboration and continuous monitoring require Enterprise
  • Dedicated deployment engineering is limited to On-Premise

• Opik — where it wins

  • Open-source deployment with a full AI observability feature set
  • Traces model, tool, retrieval, and agent activity for debugging
  • Supports evaluations, prompt versioning, cost tracking, and human feedback

  Where it doesn't

  • Self-hosting requires teams to run the open-source distribution
  • Enterprise capabilities are available through a separate custom-priced tier
  • Its broad feature set may exceed the needs of simple LLM projects

• Promptfoo9.2/10 · Free plan

  A broad evaluation and security toolkit for teams testing AI systems in development.

  Visit PromptfooFull verdict →
• Opik9.0/10 · Free plan

  A low-cost evaluation platform combining tracing, testing, monitoring, and prompt workflows.

  Visit OpikFull verdict →