What is the best AI image upscaling model?

Based on blind community voting, Crystal Upscaler is currently the #1 ranked AI image upscaling model with an Elo rating of 1321. Rankings update in real time as new votes come in.

How are AI image upscaling models ranked on Lumenfall?

Lumenfall Arena ranks AI models through blind community voting. In each matchup, two models generate from the same prompt and voters pick the better result without seeing model names. Votes are processed using TrueSkill, a Bayesian rating algorithm developed by Microsoft Research, that produces a single Elo score reflecting each model's relative quality.

What is an Elo rating for AI models?

An Elo rating is a numerical score representing a model's skill relative to other models. Under the hood, Lumenfall uses TrueSkill, which tracks two values per model: mu (estimated skill) and sigma (uncertainty). The displayed Elo is calculated as 1000 + 10 x (mu - 3*sigma), a conservative lower bound. A model must prove itself consistently across many matchups to earn a high rating.

Best AI Models for Artifact Avoidance

Artifact Avoidance · Image Upscaling

Elo rankings from blind votes across 2 challenges in this category.

Recraft Crisp Upscale

1137 #4

Topaz Image Upscale

Highlights

6 images

Price · Performance

Best models, by

Every ranked model plotted by price against its Elo. The upper-left frontier is the best value: top quality at the lowest cost.

Best Image Upscaling Models by Price

1 model without pricing omitted.

Best AI Models for Artifact Avoidance

4 models ranked · Last update: August 13, 2026 11:54 AM

#	Model	Price	¢/img	Elo
1	Crystal Upscaler Clarity AI	$$	1.6¢	1321
2	Google Upscaler Google	$	0.5¢	1163
3	Recraft Crisp Upscale Recraft	$	0.4¢	1142
4	Topaz Image Upscale Topaz Labs	—	—	1137

Crystal Upscaler dominates this category with a 1321 Elo and a near-perfect 98.6% win rate, outperforming the overall leaderboard leaders in clean output generation. It maintains a significant 158-point Elo gap over Google Upscaler, which represents the strongest value-tier alternative at roughly one-third of the price.

Rivalries

Aggregate head-to-head across the arena

Recraft Crisp Upscale Google Upscaler

89% 1 challenge 11%

Think a model is ranked wrong? Cast your vote

Highlighted challenges

Image Upscaling Detail & Texture Fidelity Artifact Avoidance

Weave Warfare

This challenge is highly revealing for an arena as it directly exposes whether models can maintain complex woven textures without introducing unnatural pattern repetition or losing the authentic fabric feel.

Image Upscaling Detail & Texture Fidelity Face & Skin Restoration

Freckle Fortress Challenge

This challenge is excellent for an arena because it forces AI models to prove they can enhance ultra-fine organic skin details without destroying freckles or turning skin into an unnatural plastic or overly smooth surface.

Awaiting blind votes

2 models have taken it on, but there aren't enough votes to rank them yet. Open the challenge to see every take.

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