Opik vs PromptLayer

Side-by-side comparison of Opik and PromptLayer: pricing, features, API access, and community ratings.

AI comparison summary

Generating comparison…

	Opik Open-source AI observability & evaluation platform for the agentic era Visit	PromptLayer The collaboration layer for AI engineering teams — prompt CMS, eval harness, and observability stack Visit
Category	AI observability	AI observability
Pricing	Freemium	Freemium
Starting price
Free tier
Audience	Technical	All audiences
API available
Open source
Self-hostable
Model provider
Founded		2022
Headquarters	United States	San Francisco, USA
Key strengths	·End-to-end agent trace logging and visualization ·30+ LLM-as-a-Judge evaluation metrics ·Automated code fix suggestions via Ollie coding assistant ·True open-source with self-hosting support	·Prompt version control and CMS for managing prompt templates ·Evaluation harness for testing and comparing LLM outputs ·Full observability stack for tracking LLM requests and performance ·Enables non-engineers (domain experts) to iterate on prompts without code changes