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Prompt Cost Estimator - Free Online Tool | IconVault

Paste any prompt, count tokens with a hand-written tokenizer, and see the cost across 10 LLM providers instantly. Free.

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Prompt Cost Estimator

Paste text, estimate token cost across 10 models

5 of 5 free uses left
168 characters44 tokens (est.)3.8 chars/token
25% of input = ~11 tokens

Output tokens are usually pricier than input tokens.

Token counts are approximate (hand-written heuristic, not tiktoken). Prices are approximate list rates, verify with your provider.

Cost per provider appears here

Hit Estimate cost to price your prompt across 10 models.

About this tool

IconVault's Prompt Cost Estimator tells you what a prompt costs before you send it: paste your text, and a hand-written approximate tokenizer (word and punctuation heuristic, about 4 characters per token for English) counts the tokens. Set your expected output length and instantly see the per-prompt and per-1k-prompt cost across 10 models from OpenAI, Anthropic, Google, DeepSeek, Meta, Mistral, and xAI.

The tokenizer preview shows exactly how your text was split, so long prompts stop being a billing surprise. Free and runs fully in your browser; your prompt text never leaves your device.

Frequently asked questions

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