What is an LLM price calculator?
An LLM price calculator turns token usage into an estimated API bill. Enter the input and output tokens your application uses each day, select up to three models, and compare the projected daily, monthly, or yearly cost using current per-million-token rates. This makes it easier to evaluate models from OpenAI, Anthropic, Google, and other providers against the same workload.
How to calculate LLM API cost
- Select one to three AI models so every estimate uses the same workload.
- Enter the number of input tokens your application sends each day.
- Enter the number of output tokens you expect the models to generate each day.
- Switch between daily, monthly, and yearly totals to compare your projected spend.
LLM cost formula
Daily cost = (input tokens ÷ 1,000,000 × input rate) + (output tokens ÷ 1,000,000 × output rate)
Monthly estimates use 30 days. Yearly estimates use 365 days. Rates are shown in US dollars per one million tokens.
LLM pricing calculator FAQs
What is an LLM price calculator?
An LLM price calculator estimates what you will pay to use large language model APIs. It combines your input and output token volumes with each model's current per-million-token rates so you can compare projected costs before choosing a provider or model.
Is this also an AI token cost calculator?
Yes. LLM price calculator, LLM pricing calculator, AI token cost calculator, and AI API cost estimator are common names for tools that apply token usage to provider rates. LLMRates also compares multiple models and projects the same workload by day, month, or year.
How do I calculate LLM API costs?
Divide your daily input tokens by one million and multiply by the model's input price, then do the same for output tokens and add both amounts. For a monthly estimate, multiply the daily total by 30; for a yearly estimate, multiply it by 365.
Are input and output tokens priced differently?
Usually, yes. Most LLM providers publish separate rates for tokens sent to the model and tokens generated by the model. Output tokens commonly cost more, so this calculator keeps the two volumes separate and shows both parts of every estimate.
Can I compare more than one AI model?
Yes. Select up to three models to compare their projected cost for the same workload. The calculator marks the least expensive result while preserving the input and output cost breakdown for every selected model.
How current are the LLM prices?
LLMRates regularly ingests and reconciles pricing records from multiple sources. Each model includes source and confirmation metadata so you can verify when its price was last checked. Because providers can introduce special tiers, review those details before making a final purchasing decision.