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LG OLED AI B5 4K Smart TV (2025) 77-inch

LG OLED AI B5 4K Smart TV (2025) 77-inch

Best price now

48"$899.9965"$995.0077"$1,499.9983"$2,699.95
$1,499.99
at Best Buy
Checked Nov 1

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Price facts

  • Last seen at $1,499.99 at Best Buy on Nov 1.

Our take on the LG OLED AI B5 4K Smart TV (2025) 77-inch

The LG B5 is LG's entry-level OLED for 2025, built around the Alpha 8 AI Processor Gen 2 and a 120 Hz OLED panel with Dolby Vision, HDR10 and HLG support. It keeps the core OLED strengths — per-pixel contrast, wide viewing angles, near-instant response — while dropping the brighter MLA panel and the extra HDMI 2.1 bandwidth of the step-up C5. Reviewers treat it as the value pick in LG's OLED line: great for dark rooms, movies and console gaming, but a notch behind the C series in bright rooms and for 4K/120 PC use.

Best forMovie watchers in a darker roomConsole gamers wanting OLED motionBuyers stepping up from LCDLarge-room main TV on a budget
Pros
  • True OLED blacks and per-pixel contrast
  • 120 Hz panel with low input lag for gaming
  • Dolby Vision, HDR10 and HLG support
  • Four HDMI inputs plus webOS with all major apps
  • Wide viewing angles for a big room
Cons
  • Dimmer than the C5 and G5 in bright rooms
  • Only two HDMI 2.1 ports, and not full 48 Gbps
  • No MLA panel, so peak brightness trails rivals
  • Reflections show more than on matte LCDs
  • 77-inch panel is heavy and needs two people to mount

LG OLED AI B5 4K Smart TV (2025) 77-inch prices at every store

  • Best BuyNew

    Availability unknown

    $1,499.99Checked Nov 1
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LG OLED AI B5 4K Smart TV (2025) 77-inch price history

Lowest price we've seen: $1,499.99 on Nov 2 at Best Buy. Tracked across 1 store since Nov 2.

What reviewers say

Owners and reviewers rate the B5 as the smart way into OLED: they praise the contrast, motion and gaming feel and call it close to the C series for most content. The recurring complaints are brightness in sunlit rooms and the limited HDMI 2.1 bandwidth.

What people mention
  • Picture contrastPraisedOwners single out the deep blacks and per-pixel contrast as the reason to buy OLED.
  • BrightnessCriticisedReviewers say HDR highlights and daytime viewing are dimmer than the C5 and G5.
  • GamingPraisedLow input lag and 120 Hz motion get good marks from console players.
  • HDMI portsMixedFour inputs are welcome, but only two are HDMI 2.1 and bandwidth is capped.
  • ReflectionsCriticisedThe glossy panel shows window and lamp reflections in bright rooms.
  • SetupPraisedwebOS and the magic remote make setup and app switching quick.

About the LG OLED AI B5 4K Smart TV (2025) 77-inch

Amazing TV for work, gaming and entertainment!

Display Type: OLED

Resolution: 4K (2160p)

Screen Size Class: 48 inches

High Dynamic Range (HDR): Yes

High Dynamic Range Format: Dolby Vision, HDR 10, Hybrid Log-Gamma (HLG)

Refresh Rate:120Hz

Motion Enhancement Technology: OLED Motion

Specific Manufacturer Technologies: Alpha 8 AI Processor Gen 2

Smart Platform: webOS

Featured Streaming Services: Netflix, HBO Max, Disney+, YouTube, Prime Video, Apple TV, Sling TV

Number of HDMI Inputs (Total): 4

TV Tuner Type: ATSC, Clear QAM

Works With: Amazon Alexa, Google Home, Apple Home

Voice Assistant Built-in: Amazon Alexa

General Brand: LG

Model Number: OLED48B5PUA

Product Name: 48" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025)

Series OLED - B5 series

Model Year: 2025

Product Height With Stand: 26.9 inches

Product Width: 42.1 inches

Product Depth With Stand: 9.3 inches

Product Height Without Stand: 24.4 inches

Specifications

Resolution
3840 x 2160
High Definition
Yes
HDTV Format
4K
Color
Black
Screen Form
Flat
Display Type
OLED
Assistant Support
Google Assistant, Amazon Alexa, Siri
HDR

Questions and answers

Is the LG B5 worth it over the C5?
The B5 keeps OLED contrast and 120 Hz gaming at a lower tier. The C5 adds a brighter panel and fuller HDMI 2.1, so pick the C5 for a bright room or PC gaming at 4K/120.
How bright is the B5 compared with other OLEDs?
It is dimmer than LG's C5 and G5 because it lacks the brighter panel tech. It looks best in a room you can darken.
Does the B5 support 4K at 120 Hz?
Yes, on its two HDMI 2.1 ports, but at reduced bandwidth, so check your console or PC settings. The other two ports are HDMI 2.0.
What is in the box?
The TV, its stand, the magic remote, batteries and a power cable. A wall mount and HDMI cables are not included.
Which voice assistants work with it?
Alexa and Google Assistant are built in, and it works with Apple Home and Siri through AirPlay and HomeKit.
Is the 77-inch version hard to wall mount?
The panel is large and heavy, so use a two-person lift and a mount rated for its size. The stand is included if you prefer a tabletop setup.
Where is the LG OLED AI B5 4K Smart TV (2025) 77-inch cheapest?
At Best Buy, for $1,499.99, as of our latest check.

Stores we've priced the LG OLED AI B5 4K Smart TV (2025) 77-inch at

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Yes
Refresh Rate
120 Hz
Connectivity
Bluetooth, Wi-Fi, RF, USB, HDMI, Ethernet
Supported Streaming Services
Netflix, Prime Video, YouTube, HBO, Disney+
Width
67.7 in wide
Screen Size
77 inches
Depth
2 in deep
Weight
51.8 lb
HDMI Ports
4 HDMI ports