diff --git a/.github/workflows/update-model-multipliers.yml b/.github/workflows/update-model-multipliers.yml
new file mode 100644
index 0000000..f485f91
--- /dev/null
+++ b/.github/workflows/update-model-multipliers.yml
@@ -0,0 +1,65 @@
+name: Update model multipliers
+
+on:
+  schedule:
+    # Run daily at 08:10 UTC, shortly after the source repo typically publishes.
+    - cron: '10 8 * * *'
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+    paths:
+      - .github/workflows/update-model-multipliers.yml
+      - scripts/update-model-multipliers.py
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  update-model-multipliers:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - name: Set up Python
+        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
+        with:
+          python-version: '3.x'
+
+      - name: Check for updates and generate model multipliers
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: python scripts/update-model-multipliers.py
+
+      - name: Create pull request
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        shell: bash
+        run: |
+          if [[ -n $(git status --porcelain) ]]; then
+            echo "Changes detected, creating PR" >> $GITHUB_STEP_SUMMARY
+            
+            # Configure git
+            git config user.name 'github-actions[bot]'
+            git config user.email 'github-actions[bot]@users.noreply.github.com'
+            
+            # Create a unique branch
+            BRANCH_NAME="update/model-multipliers-$(date +%Y%m%d%H%M%S)"
+            git checkout -b "$BRANCH_NAME"
+            
+            # Commit and push
+            git add src/lib/model-multipliers.generated.ts
+            git commit -m ":memo: Update model multipliers from rajbos/github-copilot-model-notifier"
+            git push origin "$BRANCH_NAME"
+            
+            # Create PR
+            gh pr create \
+              --title "Update model multipliers from rajbos/github-copilot-model-notifier" \
+              --body "Automated update of model multipliers from the latest release of [rajbos/github-copilot-model-notifier](https://github.com/rajbos/github-copilot-model-notifier/releases/latest). Generated by GitHub Actions." \
+              --head "$BRANCH_NAME" \
+              --base main
+          else
+            echo "No changes detected." >> $GITHUB_STEP_SUMMARY
+          fi
diff --git a/scripts/update-model-multipliers.py b/scripts/update-model-multipliers.py
new file mode 100644
index 0000000..c9890f6
--- /dev/null
+++ b/scripts/update-model-multipliers.py
@@ -0,0 +1,242 @@
+#!/usr/bin/env python3
+"""
+Regenerate `src/lib/model-multipliers.generated.ts` from the latest release of
+rajbos/github-copilot-model-notifier.
+
+The source repo publishes a markdown table of current models in the release body
+under a `### Current Models` heading. This script parses that table and fully
+overwrites the generated TypeScript file. The companion file
+`model-multipliers.legacy.ts` contains hand-maintained backward-compat entries
+and is never touched here.
+
+Usage:
+    python scripts/update-model-multipliers.py
+
+Env:
+    GITHUB_TOKEN  Optional. Used to authenticate the GitHub API request.
+"""
+
+from __future__ import annotations
+
+import json
+import os
+import re
+import sys
+import urllib.error
+import urllib.request
+from pathlib import Path
+
+RELEASE_URL = (
+    "https://api.github.com/repos/rajbos/"
+    "github-copilot-model-notifier/releases/latest"
+)
+REPO_ROOT = Path(__file__).resolve().parent.parent
+GENERATED_PATH = REPO_ROOT / "src" / "lib" / "model-multipliers.generated.ts"
+
+
+def fetch_latest_release() -> dict:
+    """Fetch the latest release JSON from the source repo."""
+    headers = {
+        "Accept": "application/vnd.github+json",
+        "User-Agent": "github-copilot-premium-reqs-usage-updater",
+    }
+    token = os.environ.get("GITHUB_TOKEN")
+    if token:
+        headers["Authorization"] = f"Bearer {token}"
+
+    req = urllib.request.Request(RELEASE_URL, headers=headers)
+    try:
+        with urllib.request.urlopen(req, timeout=30) as resp:
+            return json.loads(resp.read().decode("utf-8"))
+    except urllib.error.HTTPError as e:
+        sys.stderr.write(
+            f"HTTP error {e.code} fetching latest release: {e.reason}\n"
+        )
+        raise
+
+
+def parse_models_table(body: str) -> dict[str, float]:
+    """Parse the `### Current Models` markdown table from the release body.
+
+    Returns a mapping of model name -> paid multiplier (float).
+    Multiplier 'Not applicable' is mapped to 0.
+    """
+    if not body:
+        raise ValueError("Release body is empty; cannot parse models table.")
+
+    m = re.search(
+        r"###\s+Current Models\s*\n(.+?)(?=\n#{1,6}\s|\Z)",
+        body,
+        re.DOTALL,
+    )
+    if not m:
+        raise ValueError(
+            "Could not find '### Current Models' section in release body."
+        )
+    section = m.group(1)
+
+    models: dict[str, float] = {}
+    for line in section.splitlines():
+        line = line.strip()
+        if not line.startswith("|") or not line.endswith("|"):
+            continue
+        cells = [c.strip() for c in line.strip("|").split("|")]
+        if len(cells) < 3:
+            continue
+        if cells[0].lower() == "model":
+            continue
+        if set(cells[0]) <= set("-: "):
+            continue
+
+        name = cells[0]
+        raw_mult = cells[2]
+        if raw_mult.lower() == "not applicable":
+            mult: float = 0.0
+        else:
+            try:
+                mult = float(raw_mult)
+            except ValueError:
+                sys.stderr.write(
+                    f"Warning: skipping {name!r} - "
+                    f"unparseable multiplier {raw_mult!r}\n"
+                )
+                continue
+        models[name] = mult
+
+    if not models:
+        raise ValueError("Parsed zero models from release body.")
+    return models
+
+
+def format_multiplier(value: float) -> str:
+    """Render a multiplier as JS/TS literal: drop .0 for whole numbers."""
+    if value == int(value):
+        return str(int(value))
+    return repr(value)
+
+
+def js_string_literal(s: str) -> str:
+    """Render a string as a single-quoted JS/TS literal."""
+    escaped = s.replace("\\", "\\\\").replace("'", "\\'")
+    return f"'{escaped}'"
+
+
+def render_generated_file(models: dict[str, float], tag_name: str) -> str:
+    sorted_names = sorted(models.keys(), key=str.lower)
+    default_names = [n for n in sorted_names if models[n] == 0]
+
+    lines = [
+        "// AUTO-GENERATED FILE — DO NOT EDIT BY HAND.",
+        "//",
+        "// Source: https://github.com/rajbos/github-copilot-model-notifier (latest release)",
+        "// Updated by: scripts/update-model-multipliers.py (run daily via GitHub Actions)",
+        "//",
+        "// To make manual changes, edit `model-multipliers.legacy.ts` instead.",
+        "",
+        f"export const CURRENT_MODELS_SOURCE_RELEASE = {js_string_literal(tag_name)};",
+        "",
+        "export const CURRENT_MODEL_MULTIPLIERS: Record<string, number> = {",
+    ]
+    for name in sorted_names:
+        lines.append(
+            f"  {js_string_literal(name)}: {format_multiplier(models[name])},"
+        )
+    lines.append("};")
+    lines.append("")
+    lines.append(
+        "// Models with a 0x multiplier (free) are treated as \"Default\" "
+        "and grouped together."
+    )
+    lines.append("export const CURRENT_DEFAULT_MODELS: string[] = [")
+    for name in default_names:
+        lines.append(f"  {js_string_literal(name)},")
+    lines.append("];")
+    lines.append("")  # trailing newline
+    return "\n".join(lines)
+
+
+def parse_existing_models(content: str) -> dict[str, float]:
+    """Parse the existing CURRENT_MODEL_MULTIPLIERS object for a diff summary."""
+    m = re.search(
+        r"CURRENT_MODEL_MULTIPLIERS[^=]*=\s*\{(.*?)\};",
+        content,
+        re.DOTALL,
+    )
+    if not m:
+        return {}
+    body = m.group(1)
+    models: dict[str, float] = {}
+    entry_re = re.compile(r"'((?:\\'|[^'])*)'\s*:\s*([0-9.]+)")
+    for line in body.splitlines():
+        line = line.split("//", 1)[0]
+        em = entry_re.search(line)
+        if em:
+            name = em.group(1).replace("\\'", "'")
+            try:
+                models[name] = float(em.group(2))
+            except ValueError:
+                continue
+    return models
+
+
+def print_diff_summary(
+    old: dict[str, float], new: dict[str, float], tag_name: str
+) -> None:
+    added = sorted(set(new) - set(old), key=str.lower)
+    removed = sorted(set(old) - set(new), key=str.lower)
+    changed = sorted(
+        (n for n in set(new) & set(old) if old[n] != new[n]), key=str.lower
+    )
+
+    print(f"Source release: {tag_name}")
+    if not (added or removed or changed):
+        print("No model changes detected.")
+        return
+    if added:
+        print("Added:")
+        for n in added:
+            print(f"  + {n} = {format_multiplier(new[n])}")
+    if removed:
+        print("Removed:")
+        for n in removed:
+            print(f"  - {n} (was {format_multiplier(old[n])})")
+    if changed:
+        print("Changed:")
+        for n in changed:
+            print(
+                f"  ~ {n}: {format_multiplier(old[n])} -> "
+                f"{format_multiplier(new[n])}"
+            )
+
+
+def main() -> int:
+    release = fetch_latest_release()
+    tag_name = release.get("tag_name", "<unknown>")
+    body = release.get("body") or ""
+
+    new_models = parse_models_table(body)
+
+    old_content = (
+        GENERATED_PATH.read_text(encoding="utf-8")
+        if GENERATED_PATH.exists()
+        else ""
+    )
+    old_models = parse_existing_models(old_content)
+
+    new_content = render_generated_file(new_models, tag_name)
+
+    if new_content == old_content:
+        print(f"Source release: {tag_name}")
+        print(
+            f"{GENERATED_PATH.relative_to(REPO_ROOT)} is already up to date."
+        )
+        return 0
+
+    GENERATED_PATH.write_text(new_content, encoding="utf-8")
+    print_diff_summary(old_models, new_models, tag_name)
+    print(f"Updated {GENERATED_PATH.relative_to(REPO_ROOT)}")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/src/lib/model-multipliers.generated.ts b/src/lib/model-multipliers.generated.ts
new file mode 100644
index 0000000..2b911e7
--- /dev/null
+++ b/src/lib/model-multipliers.generated.ts
@@ -0,0 +1,35 @@
+// AUTO-GENERATED FILE — DO NOT EDIT BY HAND.
+//
+// Source: https://github.com/rajbos/github-copilot-model-notifier (latest release)
+// Updated by: scripts/update-model-multipliers.py (run daily via GitHub Actions)
+//
+// To make manual changes, edit `model-multipliers.legacy.ts` instead.
+
+export const CURRENT_MODELS_SOURCE_RELEASE = 'models-2026-04-25-082151';
+
+export const CURRENT_MODEL_MULTIPLIERS: Record<string, number> = {
+  'Claude Haiku 4.5': 0.33,
+  'Claude Opus 4.5': 3,
+  'Claude Opus 4.6': 3,
+  'Claude Sonnet 4': 1,
+  'Claude Sonnet 4.5': 1,
+  'Claude Sonnet 4.6': 1,
+  'Gemini 2.5 Pro': 1,
+  'Gemini 3 Flash': 0.5,
+  'Gemini 3.1 Pro': 1,
+  'GPT-4.1': 0,
+  'GPT-5 mini': 0,
+  'GPT-5.2': 1,
+  'GPT-5.2-Codex': 1,
+  'GPT-5.3-Codex': 1,
+  'GPT-5.4': 1,
+  'GPT-5.4 mini': 0.33,
+  'GPT-5.4 nano': 0.25,
+  'GPT-5.5': 7.5
+};
+
+// Models with a 0x multiplier (free) are treated as "Default" and grouped together.
+export const CURRENT_DEFAULT_MODELS: string[] = [
+  'GPT-4.1',
+  'GPT-5 mini',
+];
diff --git a/src/lib/model-multipliers.legacy.ts b/src/lib/model-multipliers.legacy.ts
new file mode 100644
index 0000000..1877719
--- /dev/null
+++ b/src/lib/model-multipliers.legacy.ts
@@ -0,0 +1,35 @@
+// Backward-compatibility model multipliers.
+//
+// These entries cover legacy/historical model identifiers that may still appear
+// in older GitHub Copilot CSV exports. They are maintained by hand and are
+// intentionally NOT touched by the auto-update workflow.
+//
+// Current (live) model multipliers live in `model-multipliers.generated.ts`
+// and are refreshed daily from rajbos/github-copilot-model-notifier.
+export const LEGACY_MODEL_MULTIPLIERS: Record<string, number> = {
+  'gpt-4o-2024-11-20': 0,
+  'gpt-4.1-2025-04-14': 0,
+  'gpt-4o': 0,
+  'gpt-4.1': 0,
+  'gpt-4.5': 50,
+  'gpt-4.1-vision': 0,
+  'claude-sonnet-3.5': 1,
+  'claude-sonnet-3.7': 1,
+  'claude-sonnet-3.7-thinking': 1.25,
+  'claude-sonnet-4': 1,
+  'claude-opus-4': 10,
+  'gemini-2.0-flash': 0.25,
+  'gemini-2.5-pro': 1,
+  'o1': 10,
+  'o3': 1,
+  'o3-mini': 0.33,
+  'o3-mini-2025-01-31': 0.33,
+  'o4-mini': 0.33,
+  'o4-mini-2025-04-16': 0.33,
+};
+
+// Legacy default model identifiers (always grouped under "Default").
+export const LEGACY_DEFAULT_MODELS: string[] = [
+  'gpt-4o-2024-11-20',
+  'gpt-4.1-2025-04-14',
+];
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index e29caff..c6ffbe0 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -1,6 +1,8 @@
 import { clsx, type ClassValue } from "clsx"
 import { twMerge } from "tailwind-merge"
 import { defaultServerMainFields } from "vite";
+import { CURRENT_MODEL_MULTIPLIERS, CURRENT_DEFAULT_MODELS } from "./model-multipliers.generated";
+import { LEGACY_MODEL_MULTIPLIERS, LEGACY_DEFAULT_MODELS } from "./model-multipliers.legacy";
 
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs))
@@ -338,70 +340,26 @@ export const PLAN_MONTHLY_LIMITS = {
   [COPILOT_PLANS.ENTERPRISE]: 1000
 } as const;
 
-// Model multipliers based on GitHub documentation (for paid plans)
+// Model multipliers based on GitHub documentation (for paid plans).
 // Uses display names as they appear in GitHub Copilot exports.
+//
+// The current models are sourced from rajbos/github-copilot-model-notifier and
+// refreshed daily by `scripts/update-model-multipliers.py`. Legacy entries
+// (older lowercase / dated names) are kept for backward compatibility with
+// historical CSV exports. Edit those in `model-multipliers.legacy.ts`.
+//
+// Legacy entries are spread first so that, in case of a name collision, the
+// current generated value wins.
 export const MODEL_MULTIPLIERS: Record<string, number> = {
-  // Current default models (0x multiplier for paid plans)
-  'GPT-4.1': 0,
-  'GPT-4o': 0,
-  'GPT-5 mini': 0,
-  'Raptor mini': 0,
-
-  // OpenAI models
-  'GPT-5.1': 1,
-  'GPT-5.1-Codex': 1,
-  'GPT-5.1-Codex-Mini': 0.33,
-  'GPT-5.1-Codex-Max': 1,
-  'GPT-5.2': 1,
-  'GPT-5.2-Codex': 1,
-  'GPT-5.3-Codex': 1,
-  'GPT-5.4': 1,
-  'GPT-5.4 mini': 0.33,
-
-  // Anthropic models
-  'Claude Haiku 4.5': 0.33,
-  'Claude Sonnet 4': 1,
-  'Claude Sonnet 4.5': 1,
-  'Claude Sonnet 4.6': 1,
-  'Claude Opus 4.5': 3,
-  'Claude Opus 4.6': 3,
-  'Claude Opus 4.6 (fast mode) (preview)': 30,
-
-  // Google models
-  'Gemini 2.5 Pro': 1,
-  'Gemini 3 Flash': 0.33,
-  'Gemini 3 Pro': 1,
-  'Gemini 3.1 Pro': 1,
-
-  // xAI and other models
-  'Grok Code Fast 1': 0.25,
-  'Goldeneye': 1,
-
-  // Backward compatibility for older exports
-  'gpt-4o-2024-11-20': 0,
-  'gpt-4.1-2025-04-14': 0,
-  'gpt-4o': 0,
-  'gpt-4.1': 0,
-  'gpt-4.5': 50,
-  'gpt-4.1-vision': 0,
-  'claude-sonnet-3.5': 1,
-  'claude-sonnet-3.7': 1,
-  'claude-sonnet-3.7-thinking': 1.25,
-  'claude-sonnet-4': 1,
-  'claude-opus-4': 10,
-  'gemini-2.0-flash': 0.25,
-  'gemini-2.5-pro': 1,
-  'o1': 10,
-  'o3': 1,
-  'o3-mini': 0.33,
-  'o3-mini-2025-01-31': 0.33,
-  'o4-mini': 0.33,
-  'o4-mini-2025-04-16': 0.33,
-  // Add other models as needed - fallback to 1x for unknown models
+  ...LEGACY_MODEL_MULTIPLIERS,
+  ...CURRENT_MODEL_MULTIPLIERS,
 };
 
-// Default models that should be grouped
-export const DEFAULT_MODELS = ['GPT-4o', 'GPT-4.1', 'GPT-5 mini', 'gpt-4o-2024-11-20', 'gpt-4.1-2025-04-14'];
+// Default models that should be grouped under "Default" in the UI.
+export const DEFAULT_MODELS: string[] = [
+  ...CURRENT_DEFAULT_MODELS,
+  ...LEGACY_DEFAULT_MODELS,
+];
 
 function normalizeModelName(model: string): string {
   return model.replace(/^Auto:\s*/, '').trim();