They are closely matched: OnePlus 15 scores 84/100 and Samsung Galaxy S26 Ultra scores 84/100 in our overall comparison — within 1 points. Neither is a clear winner overall, so the decision comes down to the specific features and price that matter most to you.
OnePlus 15 vs Samsung Galaxy S26 Ultra
Verdict
Our overall take, at a glance
Key takeaways
- Samsung Galaxy S26 Ultra leads OnePlus 15 overall by 6 points (84 vs 78 out of 100).
- Samsung Galaxy S26 Ultra stands out on Display Size: 6.9 in, Display Resolution: 1440 × 3120 px, Display Pixel density: 498 PPI.
- Best value: OnePlus 15 (from $899) — the strongest score-per-dollar of the two.
Samsung Galaxy S26 Ultra leads overall
Samsung Galaxy S26 Ultra
84
OnePlus 15
78
Why it stands out
- Display Size: 6.9 in
- Display Resolution: 1440 × 3120 px
- Display Pixel density: 498 PPI
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jul 2026.
OnePlus 15
The OnePlus 15 is a flagship smartphone that represents a highly unconventional generational update, described by reviewers as a significant departure from standard annual refreshes. Produced by Oppo-backed OnePlus, the device leverages the brand's legacy of focusing on a high price-to-performance ratio and custom software integration. Specific hardware specifications and processor details are not documented in the provided source materials.
Best for Buyers looking for a smartphone that delivers a major departure from standard, pBest for Users interested in a device from a brand historically committed to strong price
Pros
- Characterized by reviewers as a highly unique and non-traditional product update rather than an incremental change
- Benefits from the manufacturer's established history of balancing high-end quality with competitive pricing
- Backed by shared supply chain and manufacturing resources with Oppo
Cons
- The brand has historically faced criticism regarding customer support and past issues with app performance throttling
Samsung Galaxy S26 Ultra
The Samsung Galaxy S26 Ultra is a flagship smartphone engineered for high-end productivity and premium performance. It runs on the Qualcomm Snapdragon 8 Elite Gen 5 (3 nm) processor and comes equipped with an integrated S Pen stylus. Key features include a robust 5000 mAh battery, fast 60W wired charging, and up to 1TB of UFS 4.0 storage.
Best for Mobile productivity and document editing with an integrated stylusBest for High-performance tasks and gaming that demand the latest hardware
Pros
- Equipped with the top-tier 3 nm Qualcomm Snapdragon 8 Elite Gen 5 processor
- Built-in S Pen stylus enables precise drawing and handwriting input
- Supports faster 60W wired and 25W wireless charging compared to standard models
- Generous internal storage options scaling up to 1TB
Cons
- High premium pricing makes it a very expensive investment
- Heavy slate design weighing in at 214 grams
Value for Money
Which is the better deal for the price
Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.
OnePlus 15
Samsung Galaxy S26 Ultra
Performance
Higher benchmark score = faster
OnePlus 153,900,000
Samsung Galaxy S26 Ultra3,800,000
Benchmark score — a measured indicator of raw performance, not a guarantee of real-world speed.
Battery capacity
Larger cell — a hardware spec, not battery life
OnePlus 157,300 mAh
Samsung Galaxy S26 Ultra5,000 mAh
Capacity is the raw battery size. Real-world battery life depends just as much on the processor, software and display.
Physical Comparison
Weigh them up, then compare real dimensions in 3D
OnePlus 15Samsung Galaxy S26 Ultra
Samsung Galaxy S26 Ultra is 3 g (1%) heavier than OnePlus 15.
Review Videos
Hand-picked expert reviews for each product
Detailed Specifications
The full spec sheet, side by side
Frequently Asked Questions
Common questions about OnePlus 15 vs Samsung Galaxy S26 Ultra comparison
OnePlus 15 and Samsung Galaxy S26 Ultra are compared side by side above across every spec in the smartphones category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 84/100 for OnePlus 15 and 84/100 for Samsung Galaxy S26 Ultra.
At launch, OnePlus 15 was the more affordable option ($899) versus Samsung Galaxy S26 Ultra ($1300). Weigh that against the overall scores (84/100 vs 84/100) and the value-for-money meter above to judge whether the higher-rated model justifies its price for your needs. Current retail prices vary — check the retailer.
It's close — OnePlus 15 (84/100) and Samsung Galaxy S26 Ultra (84/100) score almost the same. Pick based on price and the individual specs that matter most to you; the comparison above shows where each one pulls ahead.
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