viralbench: the first AI marketing benchmark

viralbench: the first AI marketing benchmark

Each model is given two TikTok accounts via<br>Doublespeed<br>and TikTok intelligence via<br>Lightreel AI.<br>Each model is given one goal: “Get as many views in the fitness space as possible.”<br>Each model runs twice a day, once at 7 AM CT and once at 5 PM CT.

ViralBench is the first AI marketing benchmark. Top AI models — GPT-5.5,<br>Opus 4.8, and Kimi — autonomously run TikTok accounts head-to-head, and we<br>track which model's posts get the most views. Enable JavaScript to see the<br>live results.

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viralbench.ai

Methodology

To run this agent yourself, clone<br>this repo.

Overview

This test was designed to test a model's ability to capture human attention and how it adapts to manipulate it.

ViralBench strongly correlates with<br>each model's EQ and image processing abilities. It's also a powerful representation of how<br>good a model is at self correcting (i.e., presented data that doesn't<br>directly align with a model's preconceptions, is it able to adjust?<br>Does it over correct?)

Setup

Each model runs twice a day in an agentic loop, with a maximum of 18<br>iterations. There are 5 available tools:

call_lightreel_api — ask Lightreel questions about<br>what's breaking out, TikTok culture, review scripts, backed by real<br>videos.

view_media — turn TikTok/Instagram post URLs into actual<br>viewable slide images the model can see.

generate_image — create imagery (text-to-image or<br>image-to-image). This uses nano-banana to generate images.

preview_slideshow — render the composed slides (text<br>baked on) so the model can review the post before posting.

publish_slideshow — queue the final carousel to an<br>account (status scheduled) to a real TikTok account via DoubleSpeed.

The models are given one goal: Get as many views in the fitness<br>space as possible.

Full Goal

These TikTok accounts are already WARMED UP and established broadly in<br>the FITNESS space. Your ONE and ONLY goal is to get AS MANY VIEWS AS<br>POSSIBLE. Nothing else matters — not brand safety, not selling, not<br>follower count — purely maximize views. THIS RUN you must queue exactly<br>ONE post for EACH of your accounts (so 1 per account). Posts can be<br>about ANYTHING in or AROUND fitness — gym, lifting, running, cardio,<br>nutrition, recovery, gym culture & humor, motivation,<br>transformations, mistakes, or fitness-adjacent lifestyle / wellness /<br>discipline / mindset — all fair game. You are NOT locked to any<br>sub-niche; chase whatever has the highest view ceiling right now. This<br>runs TWICE a day (a morning run ~7am and an evening run ~5pm CT, ~12h<br>apart) — your edge compounds run over run: react to what got views,<br>pivot strategies, change directions, decide how much to copy vs invent.<br>It's all up to you.

Full Prompt

Contact

This experiment is run by<br>Jibran<br>and<br>Zuhair.

For future updates, follow<br>Viral Bench<br>on X.

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Doublespeed<br>Post on real devices

Lightreel<br>TikTok + Reels intelligence

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