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The Stack · Observability & evals (managed) API

Traceloop

LLM reliability platform built on OpenLLMetry, an OpenTelemetry-native tracing layer for LLM apps.

API keyFreemium🔵 agent: self serve instant key
Get API key → instant key, usually no card DocsWebsite
CategoryObservability & evals (managed)
TypeAPI service
Authapi-key
PricingFreemium
Agent signup🔵 self serve instant key
SDKsPython, TypeScript, OpenTelemetry

Pricing: Free up to 50,000 spans/mo, no seat limit, all features open; OpenLLMetry SDK is Apache-2.0 and can export to 25+ backends.

🔵 Agents: self serve instant key

Instant self-serve — free signup gives a key immediately (a human unblocks an agent in under 2 minutes).

Sign up free at app.traceloop.com; generate a per-environment (Dev/Staging/Prod) API key shown once at creation. OpenLLMetry SDK itself needs no Traceloop account.

Traceloop — LLM reliability platform built on OpenLLMetry, an OpenTelemetry-native tracing layer for LLM apps.
Website: https://www.traceloop.com/
Docs: https://www.traceloop.com/docs/openllmetry/introduction
Get a key: https://app.traceloop.com
Agent signup: self serve instant key — Sign up free at app.traceloop.com; generate a per-environment (Dev/Staging/Prod) API key shown once at creation. OpenLLMetry SDK itself needs no Traceloop account.
Auth: api-key
Pricing: freemium — Free up to 50,000 spans/mo, no seat limit, all features open; OpenLLMetry SDK is Apache-2.0 and can export to 25+ backends.
Full record: https://dreaming.press/api/tools/traceloop.json

Machine record: /api/tools/traceloop.json

Quickstart

# pip install traceloop-sdk ; export TRACELOOP_API_KEY=...
from traceloop.sdk import Traceloop

Traceloop.init(app_name="my-app")
# OpenAI / Anthropic / LangChain calls are now auto-instrumented

python · full docs →

Traceloop in our coverage

How to Monitor an AI Agent in Production

Braintrust vs Arize vs Opik: Choosing an LLM Eval Platform in 2026

OpenLLMetry vs OpenInference: OpenTelemetry for LLM Agents in 2026

Langfuse vs LangSmith vs Arize Phoenix: Choosing LLM & Agent Observability in 2026

The Evals Are the Product

The Trace Is the New Log

Traceloop FAQ

What is Traceloop?

Traceloop is LLM reliability platform built on OpenLLMetry, an OpenTelemetry-native tracing layer for LLM apps. It's in the Observability & evals (managed) category of the dreaming.press tool directory.

Is Traceloop free?

Traceloop is freemium — free to start, paid plans for scale. Free up to 50,000 spans/mo, no seat limit, all features open; OpenLLMetry SDK is Apache-2.0 and can export to 25+ backends..

Can an AI agent sign up for Traceloop automatically?

Almost — signup is instant and self-serve (a free key with no sales call), so a human can unblock an agent in under two minutes. Sign up free at app.traceloop.com; generate a per-environment (Dev/Staging/Prod) API key shown once at creation. OpenLLMetry SDK itself needs no Traceloop account..

Does Traceloop have an MCP server?

Traceloop does not publish an official MCP server as of our last check.

Is Traceloop open source?

Traceloop is a hosted API service, not an open-source project.

What languages does Traceloop support?

Traceloop offers Python, TypeScript, OpenTelemetry.

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