There is seldom a year when the Booker does not raise literary hackles, but it has never led to direct action until now.
There was fierce opposition to this year's shortlist and some went as far as to suggest an alternative prize that would recognise serious literary fiction, uninfluenced by popularity and sales figures.
Mitchell whose last novel, The Thousand Autumns of Jacob De Zoet, was longlisted for the Booker last year, welcomed the new prize.
"I think unequivocally that the Literature Prize will be a good thing," he said. "It's undeniable that in recent years the Booker shortlist has emphasised accessibility over artistry - to follow this trend was a stated intention of this year's judging panel.
"But Anglophone culture also needs an arena where the adjective 'challenging' isn't a dirty word, and I'm supporting the Literature Prize because it promises to create such an arena."
The new award's advisory board said: "The prize will offer readers a selection of novels that, in the view of expert judges, are unsurpassed in their quality and ambition. For many years, this brief was fulfilled by the Booker (latterly Man Booker) prize.
"But ... it now prioritises a notion of 'readability' over artistic achievement. We believe ... that the public deserves a prize whose sole aim is to bring to our attention and to celebrate the very best novels published in our time."
- Independent