Open Source: 740

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to production.

The platform to monitor, manage and improve your LLM apps.
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Log & debug LLM agents

Log all your prompts and results, see how agents are performing in production.
  • Traces & error stack traces
  • Instant search & filters
  • Live tail
  • Label data for fine-tuning
Log & debug LLM agents

Stay on top of costs

Monitor requests and costs segmented by user and model.
  • Auto cost & token calculations
  • Optimize costs
  • Costs by user, prompts & agents
Stay on top of costs

Debug complex agents

Replay agent executions with traces and find out what went wrong and where.
  • Trace agent executions
  • Error stack traces
  • Filter & instant search
Debug complex agents

Run Benchmarks

Experiment with prompts and models to find the best performing ones.
  • Fully no-code
  • AI-powered assertions & tests
  • Test open-source models
Run Benchmarks

Replay user chats

Record user conversations and identify gaps in your chatbot's knowledge.
  • Capture user feedback
  • React hooks
  • Dev-friendly frontend integration
Replay user chats

Iterate on prompts

Create templates and collaborate on prompts with non-technical teammates.
  • Clean your source-code
  • Versioning
  • A/B testing
Iterate on prompts
Trusted by 950+ AI developers at leading companies
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Lunary is easy to integrate

import lunary
from openai import OpenAI
client = OpenAI()
lunary.monitor(client)
chat_completion = client.chat.completions.create(
messages=[{"role": "user", "content": "Hello"}],
)

Secure hosting for your data

Self-host on your servers
Keep the data inside your company for maximum data security. Learn more →
Inspect our source code
Our source code is 100% open source and available on GitHub. Learn more →
Data hosted in the EU
The cloud servers we use are located in Europe for GDPR compliance.
Full access to the data
Use our complete API or export directly from the dashboard. Learn more →

Join our Open Source community.

Everything we build is 100% open-source. Check out the source-code or our ship logs.
lunary: 740

What our users say

Developers also love these

Live TailNew logs and runs are shown in realtime.
Instant SearchSearch across your whole data in milliseconds.
Label dataTag your data to easily filter and fine-tune.
Self HostSetup on your own servers for maximum data security.
PromptsStore, version and collaborate on prompts.
Data APIFetch your data to integrate it in other services.
AlertsSetup alerts to be notified for outlier results and errors.
Frontend SDKTrack chats and feedback direcly in your frontend.
PlaygroundTest your prompts on 10+ models.

Get started in minutes.

Run it on your own or get started in minutes with our hosted version.
Open Source
Self Hostable
Evaluations
Alerts
Public API
Exports
Prompt Templates
Chat Replays
Agent Tracing
Metrics
Feedback Tracking
LangChain Support
Open Source
Self Hostable
Evaluations
Alerts
Public API
Exports
Prompt Templates
Chat Replays
Agent Tracing
Metrics
Feedback Tracking
LangChain Support