AI cost calculator
Put in your monthly usage and see what each major model would cost, side by side.
Total input tokens per month. In Japanese, one character is roughly 1.5 to 2 tokens.
Output is commonly about half the input volume.
Calls per user per month, multiplied by the number of users.
Estimated monthly cost
Monthly cost in USD at the usage you entered. The cheapest is shown ingreen.
Our read: at this volume, GPT-4 mini is the cheapest. If you need more quality, Claude Haiku at $3 is the better balance.
Where quality meets cost
Ranked by efficiency rather than price alone, the winner is often not the cheapest model.
Best overall
Claude Haiku
Best quality-to-cost ratio
Cheapest
Llama 3
Can be self-hosted
Highest quality
Claude Opus
Strong on complex reasoning
* Prices are reference figures based on published rates as of April 2026. Real costs move with batch discounts, committed-use contracts and cache hits.