Developer Tools

Agenta

Open-source platform for prompt management, evaluation, and observability in LLM app development

agenta.ai

Verified API available Free tier

Quick facts
What is it	Open-source platform for prompt management, evaluation, and observability in LLM app development
Pricing	Freemium — from $49/mo
Free tier	Yes
Platform	Web Application
API	Yes
Best for	Managing prompt versions across team members, Systematically evaluating LLM performance improvements
Domain registered	2023

Data updated Aug. 1, 2026

What does Agenta do?

Agenta is an open-source LLMOps platform designed specifically for teams building applications with large language models. It provides a centralized system for managing prompts, running evaluations, and monitoring production AI systems. Instead of having prompts scattered across Slack messages, Google Sheets, and emails, Agenta gives development teams a single source of truth where they can version control prompts, compare different approaches, and track changes systematically.

The platform stands out by offering a unified playground where teams can experiment with different prompts and models side-by-side, complete with full version history. It's model-agnostic, working with any LLM provider without vendor lock-in. What makes Agenta particularly powerful is its evaluation system that supports both automated testing (using LLM-as-a-judge or custom code evaluators) and human feedback integration. The observability features trace every request through complex AI systems, making debugging much more systematic than guesswork.

Agenta benefits AI development teams who need to move from scattered, ad-hoc workflows to structured processes. It's especially valuable for teams where product managers, domain experts, and developers need to collaborate on prompt engineering. Real-world use cases include systematically testing whether prompt changes actually improve performance, quickly identifying why an AI agent failed in production, and enabling non-technical team members to safely experiment with prompts through a user-friendly interface.

Developer Tools Testing

#ai evaluation#collaboration#debugging#llmops#observability#open source#prompt management#version control

Key features

What makes it stand out

Unified playground to compare prompts and models side-by-side

Automated evaluation system with LLM-as-a-judge and custom evaluators

Complete version history for prompts and experiment tracking

Production observability with request tracing and debugging tools

Collaborative workflow for developers, PMs, and domain experts

Who is Agenta for?

Who benefits most from this tool

Managing prompt versions across team members

Systematically evaluating LLM performance improvements

Debugging production AI systems and identifying failure points

Pricing

Free tier available — start without a credit card

Hobby

Free

2 users
5,000 traces
20 evaluations
30 retention days
Unlimited prompts
2 seats included
20 evaluations / month included
5k traces / month included
30 days retention period
Community support via Github

Pro

$49.0/month

10 max users
3 included users
90 retention days
10,000 included traces
20 additional user cost
5 additional traces cost
10,000 additional traces unit
3 seats included then $20 per seat
Up to 10 seats
Unlimited evaluations
10k traces / month included then 5$ for every 10k
In-app support
90 days retention period

Business

$399.0/month

Everything in Pro, plus:

365 retention days
1,000,000 included traces
5 additional traces cost
10,000 additional traces unit
Everything from Pro
Unlimited seats
1M traces / month included then 5$ for every 10k
Role-based Access Control
SOC2 reports
Private Slack Channel
365 days retention period
Enterprise SSO
Business SLA

Enterprise

Custom

Everything in Business, plus:

custom traces
custom retention days
Everything from Business
Volume pricing
Audit logs
Custom retention periods
Bring Your Own Cloud
Dedicated Support
Self-hosted deployment options
Security reviews
Custom SLA
Custom terms & DPA

Trust & presence

Domain Domain registered 2023

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