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Know when your AI agent changed.

Every run recorded. Every release checked against the last, with the runs behind it.

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instrument() · one line of Python or TypeScript

Every run, recorded.

deploy v1.8.2 · 14:05

Every shift, next to the deploy.

Then your team reads the briefing

Travel Agent P95 is 432 ms, usually 340 ms. It started after v1.8.2.

Every number opens the runs behind it.

Setup

Two lines.
Tomorrow, a briefing.

Model calls, tools and framework steps, captured from the next run. When a release regresses, CI stops it and the same message reaches your email, Slack or webhook.

  1. 1Install

    pip install "lanternfish[openai]"

  2. 2Instrument

    lanternfish.instrument(api_key, endpoint)

  3. 3Optional, in CI before deploy: stop a release that regressed

    lanternfish verdict --release $GITHUB_SHA --environment ci

Instruments the stack you already run

  • Anthropic
  • Google Gemini
  • LangChain
  • CrewAI
  • OpenTelemetry

Pricing

Per organization,
never per seat.

Compare all plans

Free

$0/ month

5K runs · 5 briefings
14-day history · 2 members

ProUnlimited members

$49/ month

100K runs · 100 briefings
90-day history · Unlimited members

TeamUnlimited members

$199/ month

500K runs · 400 briefings
365-day history · Unlimited members

Read tomorrow's briefing.

Instrument today. Free plan, no credit card.

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