AI API Cost Calculator
Estimate what an LLM API costs per request, day, month and year from input and output prices per million tokens, with the output share of spend.
AI Writing Assistants
5 tools
Which AI Writing Assistants tool do you need?
| Tool | What it answers |
|---|---|
| AI API Cost Calculator | Multiply each token count by its price per million and divide by 1,000,000, then add input and output. |
| AI Chat Cost Calculator | Chat API cost is tokens multiplied by the price per million tokens, with input and output priced separately. |
| AI Cost Calculator | Multiply tokens per request by requests per month, divide by one million and multiply by the price per million tokens, doing input and output separately. |
| AI GPT Token Counter | The counter estimates GPT tokens with OpenAI's rule of thumb: one token is roughly four characters of English, or three quarters of a word. |
| AI Token Counter | Paste your prompt and the counter estimates its tokens with OpenAI's rules of thumb: about 4 characters of English per token, or 100 tokens per 75 words. |
All tools
AI Chat Cost Calculator
Estimate what a chatbot costs on a token-priced API: enter tokens per message and the input and output price per million tokens to see daily.
AI GPT Token Counter
Estimate how many GPT tokens a prompt uses from its characters and words, using OpenAI's 4-characters-per-token rule, and see how much of a limit it fills.
AI Cost Calculator
Estimate the monthly bill for a language-model API from tokens per request, request volume and per-million input and output token prices.
AI Token Counter
Estimate how many tokens a prompt uses with the 4-characters and 75-words rules, and see what share of a 128,000-token context window it fills.