Cost calculator

Prompt Cost Calculator

Estimate how much an AI prompt could cost based on prompt size, expected answer length, pricing profile, and usage volume.

Input cost

Input cost estimates what you pay for the prompt text and context sent to the model.

Output cost

Output cost estimates what you pay for the model’s generated answer, which may be priced separately.

Cost per prompt run

PromptMeter combines estimated input and output tokens with your selected example pricing profile.

Monthly AI cost

Usage volume fields help translate one prompt run into daily and monthly cost estimates.

Example pricing profiles

Pricing profiles are examples only. They are not official provider prices, and you should verify real prices before relying on estimates.

Calculator

Estimate your AI prompt cost

Paste a prompt, choose an example pricing profile, and estimate cost per prompt run, per day, and per month.

Prompt

Pricing profile These are example pricing profiles, not official provider prices. Always verify real prices with your AI provider. Expected answer length Choose how long you expect the model's answer to be. Prompt runs per day How many times this prompt runs each day. Days to estimate How many days to include in the monthly estimate.

Input tokens are what you send to the AI model. Output tokens are what the model returns. API providers often price them separately.

Advanced settings

Model label Model labels are for organization only. Pricing and token estimates are still manual approximations.

Input cost per 1M tokens Enter your provider's price per 1M tokens. Prices are not preloaded yet. Output cost per 1M tokens Enter your provider's price per 1M tokens. Prices are not preloaded yet.

Prices are manual for now. Example: if your provider charges $2 input and $10 output per 1M tokens, enter 2 and 10.

Expected output tokens Prompts per workflow / agent steps Use this for agents or workflows where one user request triggers multiple AI calls. Energy per 1M tokens (kWh) Optional. Enter an estimated kWh per 1M tokens if you have your own benchmark.

Energy usage is a rough estimate. Actual energy depends on model, hardware, provider, datacenter efficiency, workload, and region.

Token estimate

Characters 0

Words 0

Low input token estimate 0

Estimated prompt tokens 0

Conservative input token estimate 0

Estimated answer tokens 750

Token estimates are approximate. The real count may vary depending on language, model, provider, tokenizer, formatting, and message structure.

Cost per prompt run

Estimated input cost $0.000000

Estimated output cost $0.000000

Cost per prompt run $0.000000

Cost per 1,000 prompt runs $0.000000

Usage volume

Estimated daily AI cost $0.000000

Estimated monthly AI cost $0.000000

Based on 100 prompt runs/day for 30 days.

Monthly estimate

Monthly input tokens 0

Monthly output tokens 0

Monthly total tokens 0

Energy estimate

Estimated energy usage per request 0.000000 kWh

Estimated energy per 1,000 requests 0.000000 kWh

Estimated monthly energy usage 0.000000 kWh

Token counts and prices are estimates. Actual usage may vary depending on the provider, model, language, and tokenizer.

FAQ

Prompt cost calculator FAQ

How is prompt cost calculated?

PromptMeter estimates standard input tokens, adds expected output tokens, applies price per 1M tokens, and scales by usage volume.

Are the pricing profiles official prices?

No. The profiles are examples to make the calculator useful quickly. Enter your provider’s real prices in advanced settings.

How can I reduce prompt costs?

Shorter prompts, fewer repeated calls, lower output length, and cleaner workflows can reduce token usage and estimated cost.