Updated ELO Scores: HappyHorse Hits 1413 — Highest Ever Recorded

The Numbers

According to data reported by Atlas Cloud on April 13, 2026, citing the Artificial Analysis Video Arena, HappyHorse-1.0 has achieved the following Elo scores:

What Elo Scores Mean

The Artificial Analysis Video Arena uses an Elo rating system, similar to chess rankings. Users are shown two videos generated from the same prompt by different models (without knowing which model produced which video) and asked to choose the better one.

According to Atlas Cloud's analysis: "In Elo scores, a difference of more than 60 points indicates a clear preference. A 111-point difference indicates that users overwhelmingly chose HappyHorse in blind tests."

The 1413 Elo score in Image-to-Video is described as "the highest score recorded on the platform" — meaning no model in any category has previously achieved this level of user preference.

The Audio Gap

An important nuance in the data: HappyHorse's dominance is concentrated in the "without audio" categories. When audio is included in the evaluation, the gap between HappyHorse and Seedance 2.0 shrinks to just 1–2 Elo points — effectively a statistical tie.

This suggests that while HappyHorse produces visually superior output, its audio synchronization and sound quality are roughly on par with Seedance 2.0 rather than dramatically better. For use cases where audio quality is critical, this is an important consideration.

Why Character Depiction Matters

Atlas Cloud reports that "participants in the Artificial Analysis blind test state that HappyHorse excels particularly in character depiction. The skin texture and smoothness of movement are superior."

Notably, "over 60% of test samples were portraits or talking-head clips" — which means the high Elo scores are partly driven by HappyHorse's strength in a specific content type. For prompts involving landscapes, abstract scenes, or non-human subjects, the performance gap may be smaller.

Important Caveats

• Elo scores are dynamic and change continuously as new comparisons are submitted. The scores reported here are a snapshot from April 13, 2026 noon.
• Grok Imagine Video (xAI) has also been claiming top positions on the same leaderboard, suggesting the rankings are actively contested.
• Some leaked test videos have shown artifacts including unnatural ripples and stripe patterns in fast-moving subjects.