How is a token different from a word?

A word is a human-readable unit separated by spaces or punctuation. A token is the text unit processed by an LLM, and it can be a full word, part of a word, punctuation, whitespace, or a symbol.

Why should I count tokens before sending an API request?

Token counts affect context limits, request size, and API cost. Counting tokens before a request helps you estimate spend and avoid prompts that exceed a model's context window.

Can token counts vary between models?

Yes. Different model families can tokenize the same text differently, especially with code, punctuation, non-English text, and structured data.

How can I reduce prompt token usage?

Remove redundant instructions, compress long context, reuse stable system prompts, shorten examples, and split large documents into smaller chunks before sending them to an LLM.

Does the calculator store my prompt text?

No. The browser calculator processes pasted text locally. The paid API records usage metrics such as token and character counts, but it does not store submitted text.

TCToken-Calculator.netLLM cost and token tools

Guide API

Free browser token counter

AI Token Calculator for OpenAI, Claude, and Gemini

Paste text to count tokens locally, estimate LLM API cost, compare provider pricing, and inspect how text is split into token-sized pieces.

Start counting Token API Tokenization guide

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Token visualization

Pieces appear as the local tokenizer reads your text.

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Token summary

Tokens

Words

No-space chars

All chars

Cost snapshot

Lowest input rate

Gemini 2.5 Flash-Lite$0.1/1M

Providers covered

Major LLM APIs3 providers

Paste text to turn the pricing table into exact estimated costs for your prompt.

Need token counts in your app?

Use the Token-Calculator.net API for metered token, character, and word counts with key-based access.

POST /api/v1/tokenize$1.99/month or $9.99/year

Get API access View API docs

Compare Token Costs

Compare input, cached-input, and output pricing across major LLM providers. Long-context tiers are applied automatically when your token count crosses a provider threshold.

Full model pricing table

Rates update the estimates above as soon as you paste text.

Model	Provider	Context	Current rate / 1M tokens	Estimated cost	Pricing tier
GPT-5.5	OpenAI	1,050K / 128K	Input $5 Cached $0.5 Output $30	Input $0.0000 Cached $0.0000 Output $0.0000	Standard Long context after 272K input: input $10, cached $1, output $45.
GPT-5.5 Pro	OpenAI	1,050K / 128K	Input $30 Cached Not offered Output $180	Input $0.0000 Cached Not offered Output $0.0000	Standard Long context after 272K input: input $60, cached Not offered, output $270.
GPT-5.4	OpenAI	1,050K / 128K	Input $2.5 Cached $0.25 Output $15	Input $0.0000 Cached $0.0000 Output $0.0000	Standard Long context after 272K input: input $5, cached $0.5, output $22.5.
GPT-5.4 Mini	OpenAI	400K / 128K	Input $0.75 Cached $0.075 Output $4.5	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
GPT-5.4 Nano	OpenAI	400K / 128K	Input $0.2 Cached $0.02 Output $1.25	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
GPT-5.4 Pro	OpenAI	1,050K / 128K	Input $30 Cached Not offered Output $180	Input $0.0000 Cached Not offered Output $0.0000	Standard Long context after 272K input: input $60, cached Not offered, output $270.
Claude Fable 5	Anthropic	1M / 128K	Input $10 Cached $1 Output $50	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Claude Mythos 5 (limited availability)	Anthropic	1M / 128K	Input $10 Cached $1 Output $50	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Claude Opus 4.8	Anthropic	1M / 128K	Input $5 Cached $0.5 Output $25	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Claude Sonnet 4.6	Anthropic	1M / 128K	Input $3 Cached $0.3 Output $15	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Claude Haiku 4.5	Anthropic	200K / 64K	Input $1 Cached $0.1 Output $5	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Gemini 3.5 Flash	Google	1,048K / 65K	Input $1.5 Cached $0.15 Output $9	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Gemini 3.1 Pro Preview	Google	1,048K / 65K	Input $2 Cached $0.2 Output $12	Input $0.0000 Cached $0.0000 Output $0.0000	Standard Long context after 200K input: input $4, cached $0.4, output $18.
Gemini 3.1 Flash-Lite	Google	1,048K / 65K	Input $0.25 Cached $0.025 Output $1.5	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Gemini 2.5 Pro	Google	1,048K / 65K	Input $1.25 Cached $0.125 Output $10	Input $0.0000 Cached $0.0000 Output $0.0000	Standard Long context after 200K input: input $2.5, cached $0.25, output $15.
Gemini 2.5 Flash	Google	1,048K / 65K	Input $0.3 Cached $0.03 Output $2.5	Input $0.0000 Cached $0.0000 Output $0.0000	Standard
Gemini 2.5 Flash-Lite	Google	1,048K / 65K	Input $0.1 Cached $0.01 Output $0.4	Input $0.0000 Cached $0.0000 Output $0.0000	Standard

OpenAI API pricing Anthropic Claude pricing Google Gemini API pricing

How this AI token calculator helps before an API call

A token calculator estimates the text units an LLM will process before you send a request. Token-Calculator.net counts tokens locally in the browser, converts that count into estimated input and output costs, and links model rates to official provider pricing pages.

Plan prompt budgets

Estimate token usage before sending large prompts, documents, code snippets, or JSON payloads to an LLM.

Compare provider cost

Use the same token count across OpenAI, Anthropic, and Google model pricing to see how rates differ.

Inspect token pieces

Token visualization shows how text is split, which is useful for prompts, code, punctuation, and multilingual content.