Trace a worked example

Goal: improve the coding copilot using evals and benchmarks without breaking protected slices.

Mechanism reminder for evals and benchmarks: Define tasks and labels/rubrics, freeze versions, run the system, score with deterministic checks and/or human raters, compare against baselines, and watch for contamination.

Baseline and shock: 80/100 pass on unit-test tasks with 95% CI roughly ±4 pts—do not call a +2 pt vendor demo a revolution.

Tradeoff in play for evals and benchmarks: Bigger suites cost more and stabilize estimates. Model judges scale and inherit biases. Public benchmarks aid comparison and risk train-set overlap.

Ship decision: Gate releases on private 120-task suite: severe fails=0, pass ≥ baseline+3 on target slice, public benchmark as smoke only.

Rollback triggers for evals and benchmarks must cite pass rate with CI, slice gaps, scorer agreement, contamination indicators, cost per accepted task. If you cannot name a tolerated regression on the coding copilot, do not promote the change.

Keep the evals and benchmarks decision record beside the coding copilot code paths that implement it. Future you will not remember why a default exists unless the evidence is linked from the config for evals and benchmarks.

Also pin one numeric memory from this evals and benchmarks chapter: 80/100 pass on unit-test tasks with 95% CI roughly ±4 pts—do not call a +2 pt vendor demo a revolution. That number is not decoration; it is a template for how claims about evals and benchmarks on the coding copilot should look in design docs. Scoped specifically to evals and benchmarks / coding copilot / worked-trace.

People confuse evals and benchmarks with neighboring buzzwords when debugging the coding copilot. Before changing prompts, ask whether the broken stage was evidence gathering, the evals and benchmarks judgment itself, validation, or the product action. Fixing the wrong stage creates folklore (“we tried evals and benchmarks and it failed”) that blocks the next team on the coding copilot. Scoped specifically to evals and benchmarks / coding copilot / worked-trace.

Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to eval and benchmarks rather than generic AI advice.

Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to eval and benchmarks rather than generic AI advice.

Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to eval and benchmarks rather than generic AI advice.

For eval and benchmarks, add acceptance test 1: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 2: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 3: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 4: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 5: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 6: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 7: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 8: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 9: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 10: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 11: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 12: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 13: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 14: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 15: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 16: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 17: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 18: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 19: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 20: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 21: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 22: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 23: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 24: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 25: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 26: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 27: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 28: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 29: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 30: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 31: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.

For eval and benchmarks, add acceptance test 32: evidence source, threshold, and signer. Keep it unique to this chapter's scenario.