Which is better for a bright living room?

Neither is a bright-room champion. OLED panels like these dim in direct sun. The C6 is the newer panel, but no peak brightness figure is given for it, so compare them in a dim room.

Which is better for gaming?

The C6. Its 165Hz VRR beats the C4's 120 Hz, and both have four HDMI ports. Pick the C4 only if the 65-inch size matters more than frame rate.

Is the C6 worth the extra money?

It is not extra: the C6 is $949.99 at Home Depot and the C4 is $1,157.30 at Newegg.com as of November 4, 2026. The C6 is cheaper but 10 inches smaller.

Neither maker publishes a lifespan figure. The C6 is a 2026 model and the C4 is a 2024 model, so the C6 should get software updates for longer.

How far should I sit from each?

About 8 feet suits the 65-inch C4 for mixed viewing. The 55-inch C6 is better around 6 to 7 feet.

Do both support Dolby Vision and Dolby Atmos?

Yes, both list Dolby Vision and Dolby Atmos. The C4 also lists HDR10 and HLG, which the C6 specs do not.

LG 65-Inch Class OLED evo C4 Series 4K Smart TV with Magic Remote (OLED65C4PUA, 2024) vs LG OLED evo AI C6 55" 4K Smart webOS TV

Buy the 65-inch C4 if you want the bigger screen and Dolby Vision at a lower price: $1,157.30 at Newegg.com as of November 4, 2026, against $949.99 at Home Depot for the 55-inch C6. Buy the C6 if you sit close, game at high frame rates, or want the newer 2026 panel with 165Hz VRR. The C4's price history is volatile, so check the current price before you commit.

Today the LG OLED evo AI C6 55" 4K Smart webOS TV costs $207.31 less at its best price.

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