TL;DR - According to TechRadar, Tom's Guide and What Hi-Fi, the C6 is a real step up from the C5, mostly thanks to the Alpha 11 AI Gen3 processor, a brighter panel and 4K 165Hz on all four HDMI 2.1 ports. It's also a small step. In Germany the 65-inch list price is EUR 3,199 after a March increase, though street prices have since fallen a long way. Buy it if you're coming from an older set. If you own a C5, stay put.
We haven't put a C6 on our own bench, so this is a review of the reviews. Everything below comes from the manufacturer and from outlets that measured the TV, and the numbers link to where they came from. The review criteria are the same as for every researched post here: who measured it, how, and whether the claim survives a second source.
What LG Changed in the C6
LG's C-series is its mainstream OLED, and this is the 2026 model. Here's what independent reviewers say actually changed.
Processor. The C6 gets the Alpha 11 AI Gen3, the same chip used in the step-up G6 and W6, according to TechRadar. LG's own footnote on its German product page compares it with previous-year OLED evo sets that used the alpha 9 Gen8. What Hi-Fi? says the chip "forced a brighter and richer performance" out of the same OLED EX panel technology, and calls it a big upgrade by C-series standards.
Brightness. TechRadar measured 1,438 nits in a 10% white window in Filmmaker Mode, against 1,180 for the C5. Tom's Guide got 1,355 nits on the same kind of test, and Trusted Reviews recorded 1,510 nits on the 65-inch. Different labs, different meters, similar story: roughly 16 to 22 percent more than the C5, going by the two labs that tested both.
Panel split. For the first time the C-series isn't one panel. TechRadar says the 42 to 65-inch models use a Tandem WOLED panel, while the 77 and 83-inch sets, branded C6H in the US, use the Primary RGB Tandem 2.0 panel from the flagship G6. Trusted Reviews thinks it's a little controversial to keep the brighter panels away from the smaller sizes, though it still rates the 65-inch highly.
webOS 26. TechRadar describes streamlined menus, refined AI search features and smoother performance, with home-screen ads still present. LG's German page says the webOS Re:New program can upgrade the TV for up to five years, and Trusted Reviews says the 65-inch gets security updates until 2030.
Four HDMI 2.1 Ports and the Input Lag Numbers
TechRadar reports four HDMI 2.1 ports, all side-mounted, each supporting 4K at up to 165Hz, up from 144Hz on the C5. VRR works over the HDMI standard, FreeSync and G-Sync, and Dolby Vision gaming and auto low-latency mode are included. Anyone running a console and a PC at once won't need to swap cables.
Input lag depends on who's measuring. Tom's Guide recorded 12.9ms in standard game mode and 9.1ms in Boost, identical to the C5. Trusted Reviews got the same 12.9ms and 9.4ms. TechRadar, using a Leo Bodnar tester, reported 4.2ms at 120Hz and 9.2ms at 60Hz. Which figure is right? They all are, for their own test conditions. Every one of them is fast enough that you won't feel it.
Picture Quality: What Reviewers Found
TechRadar measured 99.7% DCI-P3 and 75.8% BT.2020 coverage, which it calls excellent for a WOLED screen, and noted that the C5's slight green tint in monochrome scenes is gone. Tom's Guide's own color error reading was 1.53 Delta-E, a touch worse than the C5's 1.25, so accuracy isn't a clean sweep either.
The weak spot is reflections. TechRadar found them merely average and noted the C6 doesn't get the anti-glare coating of the G6. It also flagged the odd banding issue and called LG's Precision Master HDR Pro setting too aggressive. If your room gets strong daylight, that matters more than 100 extra nits.
How the C6 Compares
Tom's Guide put the C6 next to its predecessor and two rivals in one table. These are its bench numbers, not ours.
| LG C6 | LG C5 | Samsung S90F | Sony Bravia 8 II | |
|---|---|---|---|---|
| HDR brightness, 10% window (nits) | 1,355 | 1,165 | 1,231 | 1,584 |
| SDR brightness, 10% window (nits) | 355 | 335 | 255 | 103 |
| Color error, Delta-E (lower is better) | 1.53 | 1.25 | 1.12 | 3.59 |
| Input lag (ms) | 12.9 / 9.1 Boost | 12.9 / 9.1 Boost | 9.1 | 16.3 |
The Sony wins on peak HDR brightness and trails on color error and input lag. The Samsung is the most accurate. The LG sits in the middle on almost everything and leads on SDR brightness. Tom's Guide's own verdict is that the Samsung S90F and S95F will likely make you almost as happy, and you'll save a good amount of cash.
Sizes and Pricing
| Size | US launch price (USD) | German list price, May 2026 (EUR) |
|---|---|---|
| 42-inch | 1,399 | 1,699 |
| 48-inch | 1,599 | 1,799 |
| 55-inch | 1,999 | 2,399 |
| 65-inch | 2,699 | 3,199 |
| 77-inch | 3,699 (C6H) | 4,599 |
| 83-inch | 5,299 (C6H) | 7,199 |
US prices come from Tom's Guide. The euro column is from Prad.de, which reported on 23 March 2026 that LG had raised the German list prices it announced two weeks earlier. The 65-inch went from EUR 2,999 to 3,199 and the 83-inch from EUR 4,999 to 7,199. Prad's list carries the 77 and 83-inch sets under C6 model codes, so check the panel spec before assuming they match the US C6H.
List price isn't what people pay. What Hi-Fi? notes UK prices came in below the C5's launch price, and on 24 September 2026 Quest-Knight reported Amazon Germany advertising the 65-inch at 54 percent below list, the lowest price it had been listed at.
The 65-inch remains the value pick on the list numbers. Going from 55 to 65 inches adds about 40 percent more screen area for EUR 800. Going from 65 to 77 adds the same 40 percent for EUR 1,400. Why pay nearly double for the same jump?
Who Should Buy the LG C6
Buy it if you're replacing an LCD or an OLED from a few generations back, or you want four full-speed HDMI 2.1 ports and 165Hz for a PC. With street prices well below list, that's an easy call.
Skip it if you own a C5. Tom's Guide describes the C6 as an incremental improvement most people won't notice in use, and it suggests waiting for the back half of the year or buying a discounted C5. If your room is sunny, weigh the average reflection handling before you pay for OLED at all.
The C6 is the strong mainstream pick again. It just isn't a leap. For the wider field, including Mini-LED and budget OLED alternatives, the best smart TVs 2025 guide covers the full competitive field.