Karl Stefanovic’s wife, Cassandra Thorburn, has broken her silence since the pair’s reported split around one month ago.

Ms Thorburn has taken to Facebook in what appears to be a veiled swipe at Channel Nine, highlighting the cost of the bitter ratings battle between the Today Show and Sunrise.

Ms Thorburn, 44, refers openly to the role she played in the program’s success since her husband joined as co-host 12 years ago.

“Apparently Today Show finally won a year,” she wrote.

“This took a huge toll on my family and I, and I’m congratulating myself today for all the effort that went into making that happen.”

She went on to acknowledge her editorial contribution to Today, and the support that she had provided for her husband at home.

“The suggestions, the story ideas, the constant counselling of questions for years,” she wrote.

“I’m giving myself a pat on the back tonight, as I know many people will also know how much effort I put into it.”

News Corp outlets last month reported that Stefanovic had split from his wife and, later, that he had moved out of the family home and in to a Bondi apartment owned by friend and tycoon, James Packer.

On Saturday, Today triumphantly declared it had won the 2016 ratings battle against Seven’s Sunrise for the first time in 13 years, citing weekday metropolitan ratings.

A spokesperson for Seven, however, shot down the claim, saying Sunrise came out on top once regional audiences were taken into account.

“Nine’s claim is slightly perplexing,” a Seven spokesperson told The New Daily.

“Perhaps maths and understanding ratings analytics is not their strong point.

“The numbers clearly show Sunrise is Australia’s most-watched breakfast television programme taking in the entire country, not just a market here and there.”