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Evaluation and testing

LLM Trace Viewer

Parse and visualize structured LLM execution traces from OpenTelemetry, LangSmith, and custom logging formats. See per-step latency, token counts, model temperatures, and tool call timelines in a clean, searchable interface.

Run LLM Trace Viewer Interactively 100% client-side execution in your browser. Zero data retention.
Open Interactive Tool

What Problem LLM Trace Viewer Solves

Production AI deployments require predictable token economics, rigorous parameter verification, and deterministic schema handling. LLM Trace Viewer isolates parameters client-side before payloads hit third-party foundation model APIs.

Primary Production Use Cases

  • Debug slow agent response times
  • Identify expensive LLM calls in production

Security & Data Privacy Considerations

All computations execute locally in browser memory. No prompt payloads, test inputs, or secret credentials are ever retained or stored on central servers.

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