The CW’s reality show ”H8R” opened softly Wednesday, a night that also saw good sampling for NBC comedy ”Up All Night.” NBC won with ”America’s Got Talent,” while CBS’ ”Survivor” was down in kicking off its fall season.

According to preliminary national estimates from Nielsen, ”H8R” averaged a 0.6 rating/2 share in adults 18-49 and 1.3 million viewers overall in the 8 o’clock hour — opposite reality shows on three of the major networks, including the ”Talent” finale on NBC and ”Survivor” premiere on CBS. It did a 0.7/2 in 18-49, which the net points out is its best for a reality show in more than two years. It was followed by the season premiere of ”America’s Next Top Model” (0.9/2 in 18-49, 1.9 million viewers overall), which was down from last year’s bow (1.3 rating in 18-49, 2.8 million viewers overall).

At NBC, ”America’s Got Talent” wrapped its season with a 3.5/10 in adults 18-49 and 14.0 million viewers overall from 8 to 10 p.m., winning its time period but down about 10% from last summer’s finale. Auds then stuck with the Peacock at 10 p.m. for the special debut of Christina Applegate/Will Arnett comedy ”Up All Night” (3.7/10 in 18-49, 10.9 million viewers overall), which emerged as the night’s top-rated program in 18-49. It was followed by a special preview of Hank Azaria comedy ”Free Agents” (2.1/6 in 18-49, 6.3 million viewers overall), which auds didn’t seem as eager to sample.

The new NBC comedies will air again in repeats tonight and then move next week to their regular Wednesday timeslots in the 8 o’clock hour.

At CBS, ”Survivor” averaged a 3.4/10 in 18-49 and 10.6 million viewers overall from 8 to 9:30 p.m., finishing slightly ahead of NBC’s ”Talent” in both 18-49 and 25-54; the show, kicking off its 23rd edition, was down about 15% from last year but was a bit ahead of its spring edition earlier this year. And from 9:30 to 11 p.m., the finale of ”Big Brother” averaged a 2.9/8 in 18-49 and 7.8 million viewers overall, on par with last year.

ABC aired repeats of comedies ”The Middle” (1.2/4 in 18-49, 4.5 million viewers overall at 8 and 1.4/4 in 18-49, 4.6 million at 8:30) and ”Modern Family” (1.8/5, 5.0 million viewers overall at 9 and 1.8/5 in 18-49, 4.7 million at 9:30), followed by an original episode of ”Primetime: Nightline” (1.2/3 in 18-49, 4.1 million viewers overall).

And Fox was very quiet with the finale of its new series ”Buried Treasure” (0.8/2 in 18-49, 2.8 million viewers overall), which was followed by a repeat of the show (0.9/2 in 18-49, 3.0 million viewers overall).

Next Wednesday will see the series premiere of Fox’s ”The X Factor” along with returning series including ABC’s ”Modern Family” and CBS’ ”CSI” on its new night.

Preliminary 18-49 averages for the night: NBC, 3.3/9; CBS, 3.1/9; Univision, 1.8/5; ABC, 1.4/4; Fox, 0.8/2; CW, 0.7/2.

In total viewers: NBC, 12.2 million; CBS, 9.2 million; ABC, 4.5 million; Univision, 3.9 million; Fox, 2.9 million; CW, 1.6 million.