LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV vs Roku Pro Series OLED
Buy the LG B5 if you want true OLED contrast and the lower price: $899.99 as of November 1, 2026. Buy the Roku Pro Series OLED if you prefer Roku's streaming interface and a brighter QLED panel, at $1,149.99 at Best Buy as of November 3, 2026. The LG costs about $250 less at those prices and offers more screen sizes.
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LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV
Choose the LG B5 if you want per-pixel OLED blacks, Dolby Vision-style HDR depth, and the lower price across 48 to 83 inches.
- OLED panel gives deep blacks and wide viewing angles
- Lower price at the listed 65-inch comparison
- Five screen sizes from 48 to 83 inches
- Supports Google Assistant, Alexa and Siri
- 120 Hz refresh rate suits sports and gaming
- OLED brightness is lower than QLED in bright rooms
- Only Netflix and Disney+ named among streaming apps
- Risk of permanent image retention with static logos over long periods
What separates them
| LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV | Roku Pro Series OLED | |
|---|---|---|
| Panel technology | OLED, self-lit pixels with near-infinite contrast | QLED, backlit LCD with quantum dots for higher brightness |
| Price, 65-inch class | $899.99 as of November 1, 2026 | $1,149.99 at Best Buy as of November 3, 2026 |
| Screen sizes | 48, 55, 65, 77, 83 inches | 55, 65, 75 inches |
| Smart platform | webOS with LG's AI processing | Roku OS, widely praised for simplicity |
| Streaming apps listed | Netflix, Disney+ | Hulu, Netflix, Prime Video, YouTube, Disney+, Roku Channel |
| Voice assistants | Google Assistant, Amazon Alexa, Siri | Google Assistant, Amazon Alexa |
| HDMI ports | Not specified in the listing |
Price history
- LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV: lowest $899.99 on Nov 1 at eBay; $899.99 on Nov 2.
- Roku Pro Series OLED: lowest $369.80 on Nov 3 at Electronic Express.
Prices at every store
LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV
- PzDealsCheck price at PzDeals
- eBayCheck price at eBay
Roku Pro Series OLED
- WalmartNew
In stock
$1,198.00Observed at 11:58 AM - Best BuyNew
Availability unknown
$1,149.99Observed at 11:58 AM - eBayNew
Availability unknownSold by dealonline18
$1,349.99Observed at 11:58 AM - Newegg.comNew
Availability unknownSold by Electronic Express
$1,349.99Observed at 11:58 AM
Also available at
- ShopSimonCheck price at ShopSimon
- Electronic ExpressCheck price at Electronic Express
- SearsCheck price at Sears
Specs compared
| Spec | LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV | Roku Pro Series OLED |
|---|---|---|
| Resolution | 3840 x 2160 | 3840 x 2160 |
| High Definition | Yes | Yes |
| HDTV Format | 4K | 4K |
| Color | Black, Brown | Black |
| Screen Form | Flat | Flat |
| Display Type | OLED | QLED |
| Assistant Support | Google Assistant, Amazon Alexa, Siri | Google Assistant, Amazon Alexa |
| HDR | Yes | Yes |
| Refresh Rate | 120 Hz | 120 Hz |
| Connectivity | Bluetooth, Wi-Fi, RF, USB, HDMI, Ethernet, Opti… | Bluetooth, Wi-Fi, USB, HDMI, Ethernet, Optical … |
What reviewers say
LG B5 Series 4K Ultra HDR Smart AI OLED WebOS TV
Reception of the B5 is generally positive: reviewers treat it as the cheapest way into a good OLED and accept the step down in brightness and processing. Owners praise picture quality for the money and complain mainly about brightness in bright rooms and the limited HDMI 2.1 connections.
- Deep blacks and strong contrast for the price
- Smooth 120 Hz motion for games and sports
- Simple WebOS interface with all major apps
- Good value as an entry OLED
- Lower brightness than C-series OLEDs
- Fewer high-bandwidth HDMI ports
- Reflections in bright rooms
- Upscaling of low-quality content is only average
Roku Pro Series OLED
The set holds a 4.7 out of 5 from 609 ratings, which points to broad satisfaction. Owners tend to like the built-in Roku experience and the smooth 120 Hz picture.
Questions and answers
- Which has better picture quality, OLED or QLED?
- The LG B5's OLED panel wins on contrast, blacks and viewing angles. The Roku Pro Series OLED's QLED panel gets brighter, which helps in a sunlit room.
- Is the Roku Pro Series OLED worth the extra money?
- At $1,149.99 versus $899.99, you pay about $250 more for Roku's interface and a brighter panel. If you mostly watch movies in a dim room, the LG is the better value.
- Which is better for gaming?
- Both run at 120 Hz. The LG's OLED response time and contrast favor dark games, but the Roku lists only 2 HDMI ports, which limits consoles plus a soundbar.
- Which has more HDMI ports?
- The Roku Pro Series OLED lists 2 HDMI ports. The LG B5 listing does not state a port count, so check the specific size before buying.
- Which screen sizes can I get?
- The LG B5 comes in 48, 55, 65, 77 and 83 inches. The Roku Pro Series OLED comes in 55, 65 and 75 inches.
- Does either support Siri?
- The LG B5 lists Google Assistant, Amazon Alexa and Siri. The Roku Pro Series OLED lists only Google Assistant and Amazon Alexa.
