Open Source LLM Engineering Platform

Traces, evals, prompt management and metrics to debug and improve your LLM application. Integrates with Langchain, OpenAI, LlamaIndex, LiteLLM, and more.

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Complete LLM Development Workflow

Everything you need to build, debug, and scale production-ready AI applications

Observability

Detailed production traces to debug LLM applications faster with full request/response visibility.

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Prompt Management

Version and deploy prompts collaboratively with low-latency retrieval and A/B testing capabilities.

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Metrics

Track cost, latency, and quality across all your models with customizable dashboards and alerts.

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Enterprise Ready

SOC 2 Type II, ISO 27001 certified with GDPR and HIPAA compliance for enterprise deployments.

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40+ Integrations

Native SDKs for Python, TypeScript, OpenAI, LangChain, LlamaIndex, and many more.

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Open Source

Self-host or use our cloud. 15K+ GitHub stars with active community support.

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Interactive Playground

Test prompts and models instantly. Compare outputs side-by-side with real-time metrics.

Prompt Editor

System Prompt

User Message

Model Comparison

GPT-4 Response $0.002

Paris is the capital and most populous city of France.

Claude-3 Response $0.0015

The capital of France is Paris, located in the north-central part of the country.

Real-time Metrics

Cost per request $0.002

Latency 1.2s

Tokens used 45

Integration Showcase

A/B Testing

Compare model outputs side-by-side to optimize prompts for your use case.

Real-time Dashboards

Monitor costs, performance, and quality across all your AI applications in one place

Cost Analytics

$2,847

Total Cost

-12%

vs last week

1.2M

Tokens

Model Performance

GPT-4

85%

Claude-3

70%

Gemini

60%

Quality Metrics

Avg. Latency 1.2s

Error Rate 0.3%

User Satisfaction 92%

Credit Management

Remaining Credits ,847

Active Alerts

Cost threshold reached

2 minutes ago

High error rate detected

15 minutes ago

Integration Status

LangChain

Active

Google Gemini

Active

Ollama

Warning

Simple, Transparent Pricing

Start for free. Scale as you grow. No hidden fees.

Hobby

Free

Perfect for getting started

50k traces/month
30 days retention
2 users
Community support

Popular

Core

$59/month

For production projects

100k traces/month
90 days retention
Unlimited users
Chat support
Rate limiting

Startup? Get 50% off

Pro

99/month

For scaling projects

100k traces/month
Unlimited retention
SOC 2 & ISO27001
Slack support
Custom rate limits

Startup? Get 50% off

Need enterprise features?

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