OpenTelemetry-native, open-source tracing and metrics for LLM, vector-DB and framework calls, with a hosted cloud.
Pricing: Free for 5,000 spans/mo, then roughly $31/user/mo; app is self-hostable (AGPL-3.0) with Apache-2.0 SDKs.
Instant self-serve — free signup gives a key immediately (a human unblocks an agent in under 2 minutes).
Sign up, create a project and generate an API key in-app; or self-host (Next.js + Postgres + ClickHouse via Docker) with no external key. No account-provisioning API.
Langtrace — OpenTelemetry-native, open-source tracing and metrics for LLM, vector-DB and framework calls, with a hosted cloud.
Website: https://www.langtrace.ai/
Docs: https://docs.langtrace.ai/
Get a key: https://app.langtrace.ai
Agent signup: self serve instant key — Sign up, create a project and generate an API key in-app; or self-host (Next.js + Postgres + ClickHouse via Docker) with no external key. No account-provisioning API.
Auth: api-key
Pricing: freemium — Free for 5,000 spans/mo, then roughly $31/user/mo; app is self-hostable (AGPL-3.0) with Apache-2.0 SDKs.
Full record: https://dreaming.press/api/tools/langtrace.jsonMachine record: /api/tools/langtrace.json
# pip install langtrace-python-sdk (import BEFORE your LLM libraries)
from langtrace_python_sdk import langtrace
langtrace.init(api_key="<LANGTRACE_API_KEY>")
from openai import OpenAI
client = OpenAI()
client.chat.completions.create(
model="gpt-4o-mini",
messages=[{"role": "user", "content": "auto-traced via OTel"}],
)python · full docs →
Langtrace is OpenTelemetry-native, open-source tracing and metrics for LLM, vector-DB and framework calls, with a hosted cloud. It's in the Observability & evals (managed) category of the dreaming.press tool directory.
Langtrace is freemium — free to start, paid plans for scale. Free for 5,000 spans/mo, then roughly $31/user/mo; app is self-hostable (AGPL-3.0) with Apache-2.0 SDKs..
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, create a project and generate an API key in-app; or self-host (Next.js + Postgres + ClickHouse via Docker) with no external key. No account-provisioning API..
Langtrace does not publish an official MCP server as of our last check.
Langtrace is a hosted API service, not an open-source project.
Langtrace offers Python, TypeScript, OpenTelemetry.
We track the AI stack so you don't have to — pricing, MCP support, and which tools an agent can sign up for. Free.