Built on OpenSource & Open standard foundations
LangWatch is an LLM observability and evaluation platform.
Debug, Evaluate & Optimize your entire AI agent lifecycle with LangWatch.
“LangWatch has brought us the next level observability and evaluations. The Optimization Studio brings the kind of progress we were hoping for as a partner."
LLM Observability
Identify, debug and resolve blindspots in you AI stack
With built-in support for OpenTelemetry, you get full visibility into prompts, variables, tool calls, and agents across major AI frameworks. No setup headaches, just faster debugging and smarter insights.
• Trace every request through your entire stack
• Visualize token usage, response time, latency and costs
• Find the root cause
• Debug complex prompt engineering issues
LLM Evaluations
Integrate automated LLM evaluations directly into your workflow
Run both offline and online checks with LLM-as-a-Judge and code-based tests triggered on every push. Scale evaluations in production to catch regressions early and maintain performance.
Detect hallucinations and factual inaccuracies
Measure response quality with custom evaluations
Compare performance across different models / prompts
Create feedback loops with domain experts or user-feedback for continuous improvement
LLM Monitoring
Keep your AI reliable and under control
Annotations & Labelling
Get better data, faster with human-in-the-loop workflows
Combine domain expert input with smart workflows to generate high-quality annotations, catch edge cases, and fine-tune datasets for more accurate, robust AI models.
• Share findings with team members
• Collaborate on prompt improvements
• Document changes and their effects
• Automatically build datasets from Annotations
LLM Experimentations
Why writing prompts yourself when AI can do that for you?
LLMOPS for your LLM-apps
All-in one Observability & Evaluations platform
LangWatch is a complete end-to-end LLMops platform, integrated in any tech stack.
Monitor, evaluate and get business metrics from your LLM application, creating more data to iterate and measuring real ROI.
Bring your Domain Experts onboard to bring human evals an important step in your workflows.
LangWatch
Analytics
Topics, Events, Custom Graphs
Easy Integration into any tech stack
Supports all LLMs , Model agnostic
OpenAI
Claude
Azure
Gemini
Hugging Face
Groq
Use your optimized LLM
flow as an API
Supports all LLMs
LangChain
DSPy
Vercel AI SDK
LiteLLM
OpenTelemetry
LangFlow
Guarantee AI Quality with LangWatch
quick 15 min demo
Self-hosted or Hybrid deployment
Deploy on your own infrastructure for full control over data and security, ensuring compliance with your enterprise standards. Or use the easiness of LangWatch Cloud and keep your customer data on your own premises.
Compliance
LangWatch is GDPR compliant and ISO27001 certified. For European customers, all our servers are hosted within Europe, with no 3rd party other than LLM providers, which you have full control of.
Role-based access controls
Assign specific roles and permissions to team members, ensuring the right access for the right people. Manage multiple projects and teams under the same organization.
Use your own models
& integrate via API
Integrate your custom models and leverage any API-accessible tools for maximum integration of the AI workflows with your enterprise sytems.