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HEAD-TO-HEAD COMPARISON

LG B5 OLED 55" vs LG B4 OLED 55"

Compare LG B5 OLED 55" vs LG B4 OLED 55" with real differences in specs, value, strengths, trade-offs, and buying fit for tvs buyers.

OVERALL WINNER
LG

LG B5 OLED 55"

PROS
  • + Smart platform with all streaming apps
  • + Infinite contrast ratio (OLED)
View on Amazon
LG

LG B4 OLED 55"

PROS
  • + Stunning HDR peak brightness
  • + HDMI 2.1 for PS5/Xbox
View on Amazon

THE VERDICT

B5 OLED 55" is the stronger buy for most people because it combines the broader spec lead with a more defensible price. B4 OLED 55" is not a bad pick, but it only makes more sense if its narrower strengths line up exactly with your workload.

Buy B5 OLED 55" if you want the safest all-round choice in this price tier.
Pick B4 OLED 55" only when one of its standout strengths matters more than balanced value.
Do not compare these two in isolation; keep your actual budget ceiling in view.

CRITERIA BREAKDOWN

Price Positioning

LG B5 OLED 55"
LG B4 OLED 55"

B5 OLED 55" is the easier buy if your goal is maximum value efficiency in this segment.

Overall Score

LG B5 OLED 55"
LG B4 OLED 55"

B5 OLED 55" carries the stronger OverLKD score and therefore the broader all-round recommendation.

Size

LG B5 OLED 55"
LG B4 OLED 55"

Both products are close enough on size that this row is not a deciding factor alone.

Panel

LG B5 OLED 55"
LG B4 OLED 55"

Both products are close enough on panel that this row is not a deciding factor alone.

Resolution

LG B5 OLED 55"
LG B4 OLED 55"

Both products are close enough on resolution that this row is not a deciding factor alone.

Refresh Rate

LG B5 OLED 55"
LG B4 OLED 55"

Both products are close enough on refresh rate that this row is not a deciding factor alone.

THE BIG DIFFERENCES

  • B5 OLED 55" wins the value argument while keeping the gap to B4 OLED 55" within the same budget segment.
  • B5 OLED 55" leads on Smart Platform: webOS 25.
  • B4 OLED 55" is only the better pick if you strongly prefer its brand or design direction.
SPECLG B5 OLED 55"LG B4 OLED 55"READOUT
Size55"55"Both products are close enough on size that this row is not a deciding factor alone.
PanelOLEDOLEDBoth products are close enough on panel that this row is not a deciding factor alone.
Resolution4K 3840x21604K 3840x2160Both products are close enough on resolution that this row is not a deciding factor alone.
Refresh Rate120Hz120HzBoth products are close enough on refresh rate that this row is not a deciding factor alone.
HDR FormatDolby Vision, HDR10, HLGDolby Vision, HDR10, HLGBoth products are close enough on hdr format that this row is not a deciding factor alone.
Smart PlatformwebOS 25webOS 24B5 OLED 55" leads on smart platform based on the harder spec line.
GamingHDMI 2.1, VRR, ALLM, G-Sync, FreeSyncHDMI 2.1, VRR, ALLMBoth products are close enough on gaming that this row is not a deciding factor alone.

SPECIFICATIONS

SPECIFICATIONS
BEST OVERALL
LG B5 OLED 55"
EXCELLENT ALTERNATIVE
LG B4 OLED 55"
ACTIONView on Amazon ↗View on Amazon ↗
OVERLKD SCORE
49/100
49/100
SIZE55"55"
PANELOLEDOLED
RESOLUTION4K 3840x21604K 3840x2160
REFRESH RATE120Hz120Hz
HDR FORMATDolby Vision, HDR10, HLGDolby Vision, HDR10, HLG
SMART PLATFORMwebOS 25webOS 24
GAMINGHDMI 2.1, VRR, ALLM, G-Sync, FreeSyncHDMI 2.1, VRR, ALLM

BUYING TAKEAWAY

If you want the shortest answer: buy B5 OLED 55" unless B4 OLED 55"'s specific advantage is exactly what you need.

Winner: LG B5 OLED 55"