GPT token counter.
Count tokens and cost for the GPT family: GPT-6 Astra, GPT-6.1 Sol, GPT-6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-5.6 Luna, GPT-5. Input prices in this family run from $0.10 to $10.00 per 1M tokens. Paste your prompt below — the estimate and live per-model cost update as you type.
How the estimate works: a blended heuristic — the average of characters ÷ 4 and words × 1.33, the two standard rules of thumb for English prose. It is an estimate, not any one model’s exact tokenizer; code and non-English text can differ by 10–20%. Costs use live list prices from the database.
FAQ
How many tokens is 1,000 words on GPT models?
About 1,330 tokens — tokenizers differ slightly by model, and this counter's blended estimate is labelled as an estimate, not an exact tokenizer count.
What is the cheapest GPT model?
By list price, GPT-6 Luna at $0.10 per 1M input tokens.