What is the highest card sequence in Teen Patti?

Direct answer
In the common Teen Patti ranking order, the highest sequence-type hand is a pure sequence, but Trail or Trio still ranks above every sequence. A pure sequence means three consecutive cards of the same suit. For example, A-K-Q of spades is a pure sequence, while A-K-Q in mixed suits is a normal sequence.
Where A-K-Q and A-2-3 fit
Many Teen Patti rule references treat A-K-Q as the highest sequence and A-2-3 as another valid sequence, but exact ordering can vary by table or app. This is why a rules page should always mention table-specific rules. If you are learning as a beginner, first remember the main ranking order: Trail, Pure Sequence, Sequence, Color, Pair, High Card.
Related learning
For more examples, read the Teen Patti rules guide and compare trail vs pure sequence in Teen Patti before moving to joker or AK47 variations.