A "selfish" Brisbane man who stabbed his partner before trying to destroy evidence of his crime has been jailed for 11 years for manslaughter.

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On Wednesday, Alexander O'Sachy was sentenced over the death of Angela Godwin, 45, at their Upper Mount Gravatt home in September 2021.

At a sentencing hearing last month, the Supreme Court in Brisbane heard the 47-year-old was originally charged with Ms Godwin's murder .

However, before he was due to challenge the charge at trial earlier this year, he entered a last-minute guilty plea to the downgraded man

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