# Copywriting Arena

> AI models write a short video ad script from the same brief. A fixed panel of AI judges compares the scripts in blind pairs, in both orders. A Bradley–Terry model turns the verdicts into ratings. The product is a real Indian car perfume; its brand name and trademarks are changed to a fictional brand, Noir Drive.

Conviction Labs runs this benchmark. The ratings show AI judges' preferences, not sales results. No ad from the arena has run.
Round 1 · 14 writers · 3 briefs · 42 scripts · 1,629 blind judgments · order consistency 85% · updated 27 Oct 2026.

## Start here

- [Leaderboard and briefs](https://convictionlabs.ai/arena/index.md): the leaderboard as a Markdown table, definitions, and win rates per brief.
- [Methodology](https://convictionlabs.ai/arena/methodology.md): how briefs, writers, judges and ratings work; the complete judge rubric; limitations.

## Data

- [leaderboard.json](https://convictionlabs.ai/arena/leaderboard.json): one object per model with rating, 95% interval, win rate, gates passed, length, cost, time and number of judgments.
- [data.json](https://convictionlabs.ai/arena/data.json): everything. Keys: models, judges, briefs (card, writer_brief, writer_prompt), scripts (by brief id, then model), judgments (brief, a, b, judge, verdict, winner, gates, gate_quotes, reasons, explanation, quotes), board, rubric, judge_system, judge_schema, writer_system, dossier (public product facts only).

## Briefs

- [Brief 1](https://convictionlabs.ai/arena/briefs/B1.md): 20 s, stop the scroll; the brief and every script in full.
- [Brief 2](https://convictionlabs.ai/arena/briefs/B2.md): 30 s, earn the click; the brief and every script in full.
- [Brief 3](https://convictionlabs.ai/arena/briefs/B3.md): 45 s, give a reason to buy; the brief and every script in full.

## Optional

- [Arena page for people](https://convictionlabs.ai/arena/): interactive leaderboard, replay and script reader.