Malil, 45, was convicted of attempted murder in September for stabbing his girlfriend more than 20 times.
"I stand before the defendant alive," Beebe testified. "Despite plunging a knife in me 23 times and trying to kill me, I am alive. Despite the wicked scars he left on my body, I am alive."
The sentence comes more than two years after the actor was arrested for the brutal attack in Vista, Calif. Malil was given the maximum sentence.
Malil testified that he visited Beebe to make amends for taking personal items from her home. He said he then stabbed her with a kitchen knife because he found her with another man.
"That night, the defendant was a monster," Beebe's mother, Laurey Manning, said. "She didn't deserve this, but I am so grateful that I can hug her."
Malil, who was dressed in a sports jacket, dress shirt and slacks, will be eligible for parole in about 10 years. For now, he expressed his remorse to the court, which left him "at a loss for words."
"I failed miserably, not only as a human being, but as a father, son, uncle, brother, friend," he said. "What I did to Kendra – I don't have the words to express my remorse."