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christso merged 1 commit into from
Feb 25, 2026
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feat(tooling): add benchmark summary report utility #379

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42 changes: 41 additions & 1 deletion examples/features/benchmark-tooling/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -152,6 +152,42 @@ bun examples/features/benchmark-tooling/scripts/significance-test.ts baseline.js
- **Identical scores**: p-value = 1, not significant (correct behavior).
- **< 2 pairs**: Cannot test; exits with code 1.

## benchmark-report

Generates a consolidated benchmark summary across models and metrics from result JSONL files. Produces per-target aggregates (mean, std dev, median, pass rate, 95% CI) and per-metric breakdowns when evaluator-level scores are present.

### Usage

```bash
# Summarize all result files in a directory
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts ./by-target/

# Summarize specific files
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts results.gpt-4.1.jsonl results.claude-sonnet-4.jsonl

# Machine-readable JSON output
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts ./by-target/ --json

# Sort by score (descending) and set custom pass threshold
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts ./by-target/ --sort score --pass-threshold 0.7
```

### Options

| Flag | Default | Description |
|---|---|---|
| `--json` | — | Output machine-readable JSON only |
| `--sort <field>` | `name` | Sort targets by: `name`, `score`, `pass_rate` |
| `--pass-threshold <n>` | `0.5` | Score threshold to count as pass |

### Output

**Per-Target Summary** includes for each model: record count, mean score, standard deviation, median, min, max, pass rate, and 95% confidence interval.

**Per-Target Metric Breakdown** appears when records contain evaluator-level `scores[]` arrays, showing mean and spread for each evaluator (e.g., accuracy, latency) per target.

**Machine-readable JSON** output (`--json`) returns a structured `BenchmarkReport` object with `summary`, `per_target`, `per_target_metrics`, and `overall` fields.

### End-to-End Workflow

```bash
Expand All @@ -171,7 +207,11 @@ bun examples/features/benchmark-tooling/scripts/win-rate-summary.ts comparison.j
bun examples/features/benchmark-tooling/scripts/significance-test.ts \
./by-target/results.gpt-4.1.jsonl ./by-target/results.claude-sonnet-4.jsonl

# 6. CI gate: use JSON output for programmatic checks
# 6. Consolidated benchmark report
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts ./by-target/

# 7. CI gate: use JSON output for programmatic checks
bun examples/features/benchmark-tooling/scripts/benchmark-report.ts ./by-target/ --json
bun examples/features/benchmark-tooling/scripts/win-rate-summary.ts comparison.json --json
bun examples/features/benchmark-tooling/scripts/significance-test.ts \
./by-target/results.gpt-4.1.jsonl ./by-target/results.claude-sonnet-4.jsonl --json
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