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Data & analytics

Listed 2 Nov 2026

Ttelemetry.dev

Observability for AI agents: every run as one trace, with tokens, cost and errors per span.

telemetry.dev

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About telemetry.dev

telemetry.dev shows each run of your AI agent as one trace, where every model call and tool call is a span with its duration, tokens, cost and error. Prompts and evals use the same traces, so you can change a prompt without a deploy, run it on a dataset and compare the scores with production.

Alerts flag errors, cost spikes and agent loops. Connect it with the TypeScript or Python SDK, or the OpenTelemetry exporter you already use. There is a free plan with no card required.

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