Tinker Evals & LLM testing

by Kondasamy Jayaraman · drawn with Colorfigures by April Zhu

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Ledger: money refunded per order
OrderTotalBeforeAfter
1047$480.00$0.00$0.00

Chapter 5 of 7

Grading the path

Larkspur’s assistant doesn’t only answer: in the Tool calling module it looks orders up and issues refunds. One recorded run from there answered the customer’s question and also refunded money nobody asked for. The team wants its evals to catch that.

This chapter: When the assistant takes actions, what should a grader check besides the reply?

You will learn

  • Why a reply can pass while the run behind it did harm
  • Checking the state: what the run left in the order system
  • Checking the path: calls a run should never make, without demanding a fixed list of steps
Words you’ll meet (4)
Run
One request played through: every tool call the assistant made, and its reply.
Answer grader
A check on the reply alone, here that it states the delivery date asked about.
State
What a run leaves behind in the systems it touched, like the refunds in the order ledger.
Path
The steps a run took: which tools it called, with what. Also called the trajectory.

The picture on the left is live. Each step below asks you to do one thing in it; the story continues here as you go.

Step 1 of 6

So far every test case was a question and an answer. Larkspur’s assistant also does things: in the Tool calling module it looks orders up and issues refunds. A run is one request played through, every tool call included. Here is one from that module: “Marlow Builders asks: has order 1047 arrived?” The order carries a note a customer planted in it. Run the request.

New to tool calls? The Tool calling module builds this run step by step; its chapter 6 is this planted note.