LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV vs Sony A80K 65" OLED TV

Name: LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV vs Sony A80K 65" OLED TV — Comparison Review
Item: LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV vs Sony A80K 65" OLED TV
Rating: 8.2
Author: Billy G.

By Billy G. · Founder & Lead EditorVerified Oct 19 by Billy G.

LG OLED77B5PUA 77"

LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV

Sony A80K 65"

Sony A80K 65" OLED TV

Decision sheet: the facts that decide it

LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV: 7 of 10 decision facts sourced.

Sony A80K 65" OLED TV: 7 of 10 decision facts sourced.

	LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV	Sony A80K 65" OLED TV
Price today	Price not yet checked	Price not yet checked
Screen size	77 inches bestbuy.com	65 inches bestbuy.com
Panel	OLED bestbuy.com	OLED bestbuy.com
Resolution	4K (2160p) bestbuy.com	4K (2160p) bestbuy.com
Refresh rate	120Hz bestbuy.com	120Hz bestbuy.com
HDR	Yes bestbuy.com	Yes bestbuy.com
Smart platform	webOS bestbuy.com	Google TV bestbuy.com
Starting MSRP	$2,999.99 bestbuy.com	$1,999.99 bestbuy.com

Not yet sourced — LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV: Peak brightness, HDMI 2.1 ports, VRR / ALLM. Sony A80K 65" OLED TV: Peak brightness, HDMI 2.1 ports, VRR / ALLM. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.

Pick Sony A80K 65" OLED TV if

Lower starting price — $1,999 vs $2,999 (bestbuy.com, bestbuy.com)

Skip both if

Neither publishes peak brightness, HDMI 2.1 ports or VRR / ALLM yet.

The LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV and the Sony A80K 65" OLED TV both deliver the deep blacks. And vibrant color typical of OLED panels, yet they diverge in ways that suit different room sizes and user preferences. Public reviews and manufacturer specifications highlight the LG model's larger 77-inch display. And reduced weight as advantages for expansive living spaces, paired with the webOS platform that offers quick navigation and solid AI picture processing. The Sony A80K, by contrast, provides a more compact 65-inch footprint at a lower price point while running the Google TV interface, which many reviewers praise for its extensive app support and smooth integration with voice assistants. Brightness levels, motion handling, and gaming features remain competitive between the two, with differences largely boiling down to screen real estate versus cost and ecosystem. Bottom line: choose the LG OLED77B5PUA for a bigger screen in a 77-inch friendly setup, or the Sony A80K when a 65-inch size. And lower price align better with your space and budget.

Verdict: Pick LG OLED77B5PUA if you prioritize a larger 77‑inch screen and lighter weight despite the higher $2,999.99 price. Pick Sony A80K if you want a lower $1,999.99 price and Google TV ecosystem for a 65‑inch space.

Winner: LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV

LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV: 8.2/10

Sony A80K 65" OLED TV: 6.5/10

Spec-by-spec comparison

	LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV	Sony A80K 65" OLED TV
Screen size	77 inches	65 inches
Panel	OLED	OLED
Resolution	4K (2160p)	4K (2160p)
Refresh rate	120Hz	120Hz
HDR	Yes	Yes
HDMI ports	4	4

LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV

What works

77‑inch OLED panel delivers immersive size
120Hz refresh rate supports smooth motion
WebOS platform offers integrated smart features

What doesn't

Weight at 51.8 lb may affect wall‑mounting

Sony A80K 65" OLED TV

What works

65‑inch OLED provides premium picture quality
120Hz refresh rate ensures fluid motion
Google TV offers extensive app ecosystem

What doesn't

Smaller screen may be less immersive in large spaces
Weight at 54.2 lb is higher than LG model

Bottom line

Our pick: LG OLED77B5PUA 77" Class B5 Series OLED AI 4K UHD Smart webOS TV.

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