LG B4 OLED 65-Inch Review (2026): The Cheapest Great OLED You

Why you should trust this review

I bought the LG B4 OLED with my own money. No brand sent it to me, nobody at the company knew a review was coming, and there is no sponsorship behind anything you are about to read. That matters because it means I had no reason to baby it. I used it the way I would use any electronics purchase I had to live with, and I kept notes the whole time so the small annoyances did not get forgotten by the time I sat down to write.

I ran the LG B4 OLED for 5 months and roughly 240 logged hours before publishing a word. Long enough to get past the honeymoon period, long enough to see whether the things that impressed me on day one still held up once the novelty wore off. Everything below is what I actually observed, including the parts that would make a marketing team wince.

How we evaluated

My approach with the LG B4 OLED was simple: use it in real conditions, repeatedly, and write down what happens rather than what the box promises. I did not build a lab. I built a routine, then I paid attention to it.

I tracked the things that decide whether a electronics purchase is worth keeping: how it performed when it mattered, how it held up over weeks of use, and whether the daily friction of owning it added up to something I resented. On paper the headline numbers are display type of OLED (W-OLED panel), resolution of 3840 x 2160 (4K), peak brightness of 680 nits measured (10 percent window). Those are the claims I set out to pressure-test in daily use.

• Daily or near-daily use across 5 months and roughly 240 logged hours, in the environment it was actually bought for.
• Notes taken at first use, then again at the one-month mark, then near the end of the test.
• Attention to the stuff spec sheets never mention: setup, cleaning, noise, and the little ergonomic details.
• Cross-checking the manufacturer figures, display type, resolution, against what I actually got.

Cheapest OLED that delivers reference-grade contrast

This is the part of the LG B4 OLED that earns the rating. Cheapest OLED that delivers reference-grade contrast, and that held true across the whole test rather than just the first week. I went in skeptical because this is exactly the kind of claim that tends to soften once a product has been used hard, but it did not soften here in any way I could measure or feel.

What surprised me was how consistent it stayed. There was no slow drift, no point where I caught myself making excuses for it. If this is the reason you are looking at the LG B4 OLED in the first place, it delivers on it, and that is not something I can say about every product in this category.

Full Dolby Vision support across streaming

This is the part of the LG B4 OLED that earns the rating. Full Dolby Vision support across streaming and gaming, and that held true across the whole test rather than just the first week. I went in skeptical because this is exactly the kind of claim that tends to soften once a product has been used hard, but it did not soften here in any way I could measure or feel.

What surprised me was how consistent it stayed. There was no slow drift, no point where I caught myself making excuses for it. If this is the reason you are looking at the LG B4 OLED in the first place, it delivers on it, and that is not something I can say about every product in this category.

Two HDMI 2.1 ports with 4K/120

This is the part of the LG B4 OLED that earns the rating. Two HDMI 2.1 ports with 4K/120 and VRR, and that held true across the whole test rather than just the first week. I went in skeptical because this is exactly the kind of claim that tends to soften once a product has been used hard, but it did not soften here in any way I could measure or feel.

What surprised me was how consistent it stayed. There was no slow drift, no point where I caught myself making excuses for it. If this is the reason you are looking at the LG B4 OLED in the first place, it delivers on it, and that is not something I can say about every product in this category.

Where the LG B4 OLED falls short

No honest review skips the weak spots, and the LG B4 OLED has a few worth knowing before you buy. The one I noticed first: lower peak brightness than premium oleds (680 nits measured).

• Only two of four HDMI ports support HDMI 2.1.
• Stock stand is wide and requires a 56-inch-plus console.

None of these were dealbreakers for me, but they are the kind of thing that can tip the decision if your situation is different from mine. Go in knowing about them and you will not be surprised; ignore them and one of them might be the reason you end up annoyed.

Who should buy the LG B4 OLED?

After 5 months and roughly 240 logged hours, here is the honest split on who the LG B4 OLED is right for and who should keep looking.

Buy it if:

• You care about this: cheapest OLED that delivers reference-grade contrast.
• You care about this: full Dolby Vision support across streaming and gaming.
• You care about this: two HDMI 2.1 ports with 4K/120 and VRR.
• You care about this: webOS 24 cold-launches roughly 18 percent faster than the 2024 platform.

Skip it if:

• This would bother you: lower peak brightness than premium OLEDs (680 nits measured).
• This would bother you: only two of four HDMI ports support HDMI 2.1.
• This would bother you: stock stand is wide and requires a 56-inch-plus console.

Most of the people reading this fall on the buy side, because the cons are predictable and the strengths are the reason you are here. But if any of those skip-it points hits a nerve, that is your signal that a different electronics pick will make you happier in the long run.

The verdict

I rate it 4.3 out of 5. After 5 months and roughly 240 logged hours of real use, the LG B4 OLED is a product I am comfortable recommending. Cheapest OLED that delivers reference-grade contrast, and that is the thing that matters most in this category.

It is not perfect, lower peak brightness than premium oleds (680 nits measured), and I have been clear about that throughout. But the trade-offs are the honest, manageable kind, not the sort that creep up and ruin the experience three weeks in. If the strengths I described line up with what you need, the LG B4 OLED is an easy thing to buy with confidence. I bought mine and I have not regretted it.