ASUS Zenfone 12 Ultra vs OnePlus 13

ASUS Zenfone 12 Ultra

ASUS

Good

OnePlus 13

OnePlus

8.6

Excellent

What Reviewers Agree On

Snapdragon 8 Elite delivers excellent, blazing-fast performance
Battery life is genuinely strong — comfortably lasts a full day and beyond
6-axis gimbal stabilizer produces uniquely impressive video stabilization
Clean near-stock Android with minimal bloatware is the best software package on Android
Only 2 Android updates is universally criticized as unacceptable at EUR 1,099
Camera processing falls short of Samsung, Google, and Apple at this price tier

Deal Breakers

Only 2 Android OS updates — worst among 2025 flagships at this price

Detailed Comparison

Performance

ASUS Zenfone 12 Ultra

Snapdragon 8 Elite delivers class-leading performance — described as "the fastest phone I used in 2025" by Android Central. The clean, near-stock Android 15 experience with no bloatware makes it one of the most fluid Android phones available. On-device Meta Llama 3 AI processing is private but slow.

"The fastest phone I used in 2025" — Snapdragon 8 Elite with the best-tuned software on Android
Clean near-stock Android 15 with zero bloatware — extremely fluid and well-optimized
On-device Meta Llama 3 AI is privacy-friendly but slow — often faster to just do the task manually
Aggressive thermal throttling under sustained loads — GPU benchmark scores lower than expected

OnePlus 13

The Snapdragon 8 Elite is the fastest mobile chip available, and OnePlus has tuned it well.

This is the fastest Android phone you can buy right now — everything from app launches to gaming feels instantaneous.

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Camera

ASUS Zenfone 12 Ultra

The standout is the 6-axis Hybrid Gimbal Stabilizer 4.0 which delivers uniquely impressive video stabilization — a 66% improvement over the predecessor. The 50MP main camera is solid in good light, but HDR processing produces visible ghosting artifacts, dynamic range suffers with crushed shadows and clipped highlights, and the overall camera system doesn't compete at this price tier.

6-axis Hybrid Gimbal Stabilizer is uniquely excellent for video — best-in-class stabilization
HDR processing leaves visible ghosting artifacts in photos — a shocking flaw for a 2025 flagship
Dynamic range issues: shadows frequently crushed, highlights clipped, colors washed out and cold
"Better than midrange but not flagship level" — not competitive with Galaxy S25 Ultra or Pixel 9 Pro

OnePlus 13

A major step up for OnePlus cameras, though still not quite matching Apple and Samsung's best.

The Hasselblad color science produces natural, film-like images that many will prefer over Samsung's punchy processing.
Low-light performance has improved dramatically but still falls slightly behind the iPhone 16 Pro in challenging conditions.