Encode text to token IDs or decode token IDs back to text — for every major LLM model in real time.
Instant tokenization using OpenAI's tiktoken library — the same engine powering GPT models.
Each token is color-coded and labeled with its ID, so you can see exactly how your text is split.
GPT-4o, GPT-4, GPT-3.5, o1, o3, embeddings, and legacy models — all in one place.