Stateful tokenization can cut tokenization overhead from 64% to near-zero for agent workloads by reusing cached tokens and only re-tokenizing small appended text, achieving 437x speedup over standard methods.
TokTier is a stateful tokenization service that eliminates redundant re-tokenization in LLM serving. Instead of re-tokenizing entire requests on each call, it intelligently reuses cached tokenization from previous calls by only re-tokenizing small windows around new appended text. For new sessions, it uses GPU acceleration to tokenize efficiently.