The Spain midfielder dismisses suggestions that this season's Bundesliga title race is already over and warns he has yet to find his best form under Pep Guardiola
Die Roten have already built a commanding lead in this season's championship, with nearest challengers Bayer Leverkusen 10 points adrift after their 2-1 victory over Stuttgart.
The Bavarians remain unbeaten in the league this season as they look to retain the title they won at a canter in 2012-13, but Thiago - who scored the winner in the dying minutes on Wednesday - insists the pressure from the chasing pack remains a concern.
"We are not champions yet," the 22-year-old said in an interview with Bild am Sonntag.
"It's true, I would not have previously believed that we would already have such a lead but things can also quickly get away from you again. We cannot let up.
"Sure, we sometimes have had games that were much simpler than we would have expected but there were also games that were very close, where we were lucky, where we won by only one goal.
"We have come closer to winning the championship - nothing more.
"We always have pressure. The pressure does not depend on how far we are away from the team in second. The pressure never diminishes. Even if we led by 50 points we would have mega-pressure that would not subside."
Thiago's acrobatic 93rd-minute winner against Stuttgart was his first goal in German football since his summer move from Barcelona, and the Spaniard insists he has yet to hit top form under Pep Guardiola this season.
"You have not even see the 100-per-cent Thiago yet," said the 22-year-old.
"There is still room for improvement. I've not been here long and I was initially injured. I'm still learning how to play with my team-mates.
"Pep can be satisfied for only five seconds of a game," he added of his head coach.
"He wants to win everything. He is always thinking ahead. Five seconds after the end of the game he is already thinking about the next game."
Bayern, who have 50 points from 18 games, host Eintracht Frankfurt on Sunday and will be looking to extend their lead back to 13 points.