The 6-foot-2, 295-pound Langley, who took an official visit to UT in September, said UT made him feel like he was at home.
"I just liked it over there with the atmosphere and hospitality," he said. "The coaching staff made me feel like it was a home away from home. They felt like my own coaching staff here."
Langley said he chose UT over Penn State. He was also considering Oklahoma and Texas A & M.
He said he sat down with his parents Sunday night to discuss his options. He told them UT was his choice, and they agreed it would be a good fit.
"They really knew thats what I wanted to do," he said. "They gave me their blessing. They were very supportive."
Langley said he made his commitment to UT head coach Phillip Fulmer, who was happy to accept.
"He was really excited," Langley said. "He started hollering. I was like, Wow. "
Langley said he has developed a relationship based on more than football with Fulmer, who he said has become like a father-figure.
"It was a point that he cares about more than the football player," Langley said. "I talk to him all the time. I talk to him on a daily basis. It shows he cares about me and Im more than a football player to him."
Langley plans to graduate in December and enroll at UT in January. The early start should give him a chance at immediate playing time on a defensive line that needs help.
"Ill be in the system and know how to handle different things," he said. "Ill know how to work how (defensive tackles) coach Dan Brooks wants me to work. I think I can make an impact early."
Another important factor in Langleys decision was the chance to play in the SEC. He said he has always followed football in the South.
"The SEC is the best conference in the country," he said.
Langley has been forced to hurry through the recruiting process because of his early graduation. His commitment to UT gives him one less thing to worry about.
"It feels great," he said. "I can only worry about talking to one school and winning a state championship."