[q] Add GitHub Copilot billing multipliers to daily-model-inventory workflow

[github-actions]

Q Workflow Optimization Report

Request

Fetch https://docs.github.com/en/copilot/reference/copilot-billing/model-multipliers-for-annual-plans and extract the model multipliers for GitHub Copilot to use as the basis for efficient token analysis.

Changes Made

.github/workflows/daily-model-inventory.md

New job: collect_copilot_billing_multipliers (runs in parallel with other collection jobs)

Adds an official pre-job step that scrapes the GitHub Copilot billing docs page to extract authoritative ET multipliers per model:

• Fetches the docs page with Python's urllib (no API key required)
• Parses the HTML table to extract Model, Current multiplier, and New multiplier columns
• Stores as a build artifact copilot-billing-multipliers (7-day retention)

**Example of extracted (redacted)

{
  "source": "https://docs.github.com/en/copilot/reference/copilot-billing/model-multipliers-for-annual-plans",
  "headers": ["Model", "Current multiplier", "New multiplier"],
  "models": [
    { "Model": "Claude Sonnet 4.6", "Current multiplier": "1", "New multiplier": "9" },
    { "Model": "GPT-5 mini", "Current multiplier": "0", "New multiplier": "0.33" },
    { "Model": "Claude Haiku 4.5", "Current multiplier": "0.33", "New multiplier": "0.33" }
  ]
}

Updated agent prompt (Step 3): Instructs the agent to treat the docs table as the primary (authoritative) source of ET multipliers, preferring the New multiplier column for upcoming billing schedule comparisons.

New bash tools: Added cat and jq tools for the billing multipliers artifact.

Playwright CLI tool enabled: Added playwright: mode: cli for future interactive page scraping if needed.

Expected Improvements

• The daily-model-inventory agent now has access to official, accurate multipliers from GitHub's docs instead of relying solely on inference heuristics
• The New multiplier column captures upcoming price changes before they take effect, giving workflow authors advance notice for token-cost planning
• Future runs will flag discrepancies between model_multipliers.json and the official docs table automatically

Validation

✅ daily-model-inventory compiled successfully (no errors, no warnings)

References

• Triggered by issue comment on [model-inventory] Model alias inventory update - 2026-05-04 #30051 by @pelikhan

• Docs page: https://docs.github.com/en/copilot/reference/copilot-billing/model-multipliers-for-annual-plans

• Fixes [model-inventory] Model alias inventory update - 2026-05-04 #30051

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Warning

Protected Files — Push Permission Denied

This was originally intended as a pull request, but the patch modifies protected files. A human must create the pull request manually.

Protected files

• .github/workflows/daily-model-inventory.md

The push was rejected because GitHub Actions does not have workflows permission to push these changes, and is never allowed to make such changes, or other authorization being used does not have this permission.

Create the pull request manually

# Download the patch from the workflow run
gh run download 25300633417 -n agent -D /tmp/agent-25300633417

# Create a new branch
git checkout -b q/model-inventory-billing-multipliers-43a98c51f46cf1da main

# Apply the patch (--3way handles cross-repo patches)
git am --3way /tmp/agent-25300633417/aw-q-model-inventory-billing-multipliers.patch

# Push the branch and create the pull request
git push origin q/model-inventory-billing-multipliers-43a98c51f46cf1da
gh pr create --title '[q] Add GitHub Copilot billing multipliers to daily-model-inventory workflow' --base main --head q/model-inventory-billing-multipliers-43a98c51f46cf1da --repo github/gh-aw

🎩 Equipped by Q · ● 1.5M · ◷

• expires on May 6, 2026, 4:20 AM UTC