Free Token Counter

Free Token Counter tallies tokens for ChatGPT, Claude, Gemini and Mistral prompts in your browser, and estimates the matching API cost.

free

token counterLLMChatGPTClaudeGeminiMistralAPI costprompt engineeringprivacy

IndexedJuly 17, 2026

UpdatedJuly 20, 2026

4.3 (0 Number of reviews)

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What Free Token Counter does

Free Token Counter is a browser utility that measures how many tokens text will consume before it reaches a large language model. Paste a message, prompt or document and the page instantly shows the token total, an estimated API cost and whether the text fits the target model context window. Counting runs on the client, so prompts stay in the browser and never travel to a remote server.

Counters and converters

The site bundles several dedicated pages tied to specific tokenizers:

ChatGPT Token Counter for GPT-family models, with context-window fit checks.
Mistral Token Counter covering Mistral Medium, Magistral and Mistral Large.
Tokens to Words converter that maps counts to approximate words, characters and pages for ChatGPT, Claude and Gemini.

Who it is for

Prompt engineers, API developers and content teams use it to budget context length, forecast spend and decide whether to trim or chunk a document before an API call.

Pros & Cons

Pros

Runs entirely in the browser, so prompts never leave the device
Covers ChatGPT, Claude, Gemini and Mistral tokenizers
Estimates API cost alongside raw token counts
Dedicated pages for common workflows like tokens-to-words

Cons

Estimates rely on public tokenizers and may drift with new model releases
Cost figures are indicative and do not replace official billing dashboards

Frequently Asked Questions

Does the tool send my text to a server?

No. Counting runs locally in the browser, so the pasted content stays on the device.

Which models are supported?

Dedicated pages cover ChatGPT, Claude, Gemini and Mistral families, including Mistral Medium, Magistral and Mistral Large.

Can it tell me if my prompt fits a context window?

Yes. Each counter compares the token total against the target model context limit.

Are the API cost figures exact?

They are estimates based on public per-token pricing and are meant as a budgeting aid, not an invoice.

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