OpenAI Tokenizer
Use this tool below to understand how a piece of text might be tokenized by OpenAI models (gpt-5, gpt-5-mini, gpt-5-nano, gpt-4o, gpt-4.1) and the total count of tokens in that piece of text.
Tokens
0
Characters
5
Token breakdown
Building an AI chatbot?
Open-source GenAI monitoring, prompt management, and magic.
Open Source
Self Hostable
1-line Integration
Prompt Templates
Chat Replays
Analytics
Topic Classification
Agent Tracing
Custom Dashboards
Score LLM responses
PII Masking
Feedback Tracking
Open Source
Self Hostable
1-line Integration
Prompt Templates
Chat Replays
Analytics
Topic Classification
Agent Tracing
Custom Dashboards
Score LLM responses
PII Masking
Feedback Tracking
