Skip to content
ZeroLimitAI
/
Sign in
Free Tool

Token Counter

Estimate how many tokens your text uses in GPT, Claude, Gemini and open models. Useful for prompt engineering and cost estimation.

0
Tokens
0
Words
0
Characters
1
Lines

Estimated cost for this prompt

GPT-4o (OpenAI)$0.0000
Claude Sonnet 4.6$0.0000
Gemini 2.5 Flash$0.0000
ZeroLimitAI (free models)$0 inference

* Prices are per-token input rates as of March 2026. Token count is an approximation based on cl100k_base tokenizer rules (±5% accuracy).

What is a token?

Tokens are chunks of text that AI models process. In English, ~1 token ≈ 4 characters or ¾ of a word. "ChatGPT" = 2 tokens. Common words are usually 1 token.

Why does it matter?

Most AI APIs charge per token. Context windows also have limits — GPT-4o supports 128K tokens, Gemini 2.5 up to 1M. Long prompts cost more and may be truncated.

No per-token bill on ZeroLimitAI

With ZeroLimitAI you never pay per token: ZeroOptimize™ routes each request to the best free model available. Plans set a daily number of calls instead, and free accounts can send up to 16,000 input tokens per API request.

Stop counting token costs. Try ZeroLimitAI free for 3 days.

Start free — no card needed

Frequently asked questions

How many tokens is 1000 words?

Approximately 750–800 tokens for English text. AI models tokenize roughly 1 token per 4 characters or 0.75 tokens per word. A 1,000-word document is typically 750–800 tokens.

How many tokens does GPT-4o support?

GPT-4o supports a 128,000 token context window, equivalent to roughly 96,000 words or a 300-page book in a single prompt.

How do I count tokens for Claude Sonnet?

Paste your text into the token counter above. Claude's tokenizer is different from OpenAI's, but for English text both land near 1 token per 4 characters, so this estimate is a good first guess. For an exact count, use Anthropic's token-counting API.

How much does it cost per token with GPT-4o vs Gemini 2.5 Flash?

At list prices, GPT-4o costs about $2.50 per million input tokens and Gemini 2.5 Flash about $0.15 — roughly 16× cheaper. Check the vendor's pricing page for current rates. ZeroLimitAI's ZeroOptimize™ only routes to free models, so inference costs $0 and plans are priced by calls per day instead.

Is this token counter accurate for all AI models?

This tool provides an estimation based on the most common tokenization pattern (approximately 1 token per 4 characters or 0.75 tokens per word). Exact counts vary slightly between models — OpenAI's tiktoken library gives exact counts for GPT models, and Anthropic provides exact counts for Claude models.

Stop paying per token.

One endpoint. $0 inference.

Free 7-day API key in a minute · no card. Then $99 a year.