AI Token Counter
Paste a prompt and watch the token, character and word counts update on every keystroke, with an input-cost preview for the model you pick.
Language models bill by the token, not the word, so knowing roughly how many tokens a prompt uses tells you what a call will cost and whether it fits the context window. This gpt token counter gives a live estimate as you type: paste or write your text, pick a model, and read the estimated tokens, character count, word count and the price to send it as input. There is no exact tokenizer running in your browser here, so the number is an approximation cross-checked two ways — around four characters per token, and about 1.33 tokens per word — then blended. Treat it as a close estimate for planning, not the exact figure your API bill will show.
Your text
Your text never leaves this page. Counting happens in your browser — nothing is uploaded or stored.
Estimated tokens
34
Approximate — real tokenizers differ by model
- Characters
- 144
- Words
- 23
- As input · GPT-4o
- $0.000085
How the estimate is made
- Characters ÷ 4: 36 tokens
- Words × 1.33: 31 tokens
- Blended (shown above): 34 tokens
Prices updated January 2026 — verify against the provider before you rely on a quote. Output tokens are billed separately at a higher rate.
This is an estimate, not an exact count. Different models use different tokenizers (BPE variants), and code, non-English text and unusual whitespace tokenize differently from plain English. For exact billing, check the token counts your API response returns.
How it works
- 1
Paste or type your text
Drop a prompt, a system message or a whole document into the box. The count updates on every keystroke, so you can trim wording and watch the token total drop in real time.
- 2
Pick the model to price it against
Choose the model you plan to call. The tool multiplies the estimated tokens by that model's current input rate to show what one request would cost as a prompt.
- 3
Read the estimate and the breakdown
The big number is the blended token estimate. Below it you get characters, words and input cost, plus the two heuristics (chars ÷ 4 and words × 1.33) so you can see how the figure was reached.
Instant & 100% private — nothing is uploaded
Every calculation runs locally in your browser. The prompts, token counts and numbers you enter stay on your own device and are never sent to a server — nothing is stored, logged or shared.
Frequently asked questions
- How accurate is this llm token calculator?
- It is a heuristic estimate, usually within about 10–20% of a real tokenizer for ordinary English prose. It cannot be exact because each model uses its own byte-pair vocabulary, and code, emoji, non-English scripts and odd whitespace all split differently. For exact numbers, read the token counts returned in your API response.
- Why do the character and token counts differ so much?
- A token is not a character or a word. On average one token covers roughly four characters of English text, so a 400-character message is usually around 100 tokens. Short common words often become a single token, while long or rare words get split into several.
- Does this prompt token counter send my text anywhere?
- No. The counting runs entirely in your browser with JavaScript. Nothing you paste is uploaded, logged or stored on a server, so it is safe to check sensitive prompts or internal documents.
- Does the cost preview include the model's reply?
- No. It prices your text as input (prompt) tokens only. The model's response is billed separately as output tokens, usually at a higher per-token rate, so the full cost of a call is your input cost plus the output cost once you know the reply length.
Important
For planning and estimates only. Prices come from a published rate table dated on the page; providers change pricing without notice, and token counts here are approximations. Confirm against the provider’s own pricing before you budget or commit.
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