Planning your next AI project? Unpredictable LLM costs can be a major hurdle, making it difficult to budget effectively and avoid surprise bills. To help you forecast your expenses, we’ve created a free, comprehensive Token & Cost Calculator. This interactive tool allows you to model different scenarios based on your expected usage and instantly see the projected costs for today’s most popular models, including GPT-4, Claude 3, Llama 3, and even a placeholder for the upcoming GPT-5. Stop guessing and start making data-driven decisions for your AI development today. GPT Comprehensive Token & Cost Calculator (Responsive)

GPT Token & Cost Calculator Web

Assumptions

Select a model to auto-populate prices, or choose "Custom" to enter your own.

Select Model

Prompt price / 1M tokens

Completion price / 1M tokens

Cache WRITE price / 1M tokens

Cache READ price / 1M tokens

Chars per token (avg)

Default requests / month

Estimator

Model different workloads by adding scenarios. All costs are calculated based on the assumptions.

Scenario	Requests	Prompt (Non-Cached)	Cache WRITE	Cache READ	Completion	Prompt Cost	Write Cost	Read Cost	Comp. Cost	Total Cost	Tokens/Req	Cost/1K Tok	Cost/Req	Monthly
	0	0	0	0	0	$0.00	$0.00	$0.00	$0.00	$0.00	0	$0.00	$0.00	$0.00

Approximate Tokenizer

Paste text to get a rough token estimate based on the character-per-token assumption. For exact counts, always use your provider's official tokenizer.

Estimated tokens: 0

(chars ÷ 4)

How to use the tool (FAQ)

How do I set my own prices?

The Assumptions card on the top left is where you control all the core numbers. Simply type your provider's costs into the input fields (e.g., "Prompt price / 1M tokens"). All calculations in the Estimator table will update instantly.

How does the Estimator work?

Each row in the Estimator is a scenario representing a type of workload (e.g., chatbot queries, document summaries). For each scenario, you enter the number of requests and the average tokens used for prompts and completions. The tool then calculates all the costs for you per-scenario and in total.

What are the "Blended Totals"?

The footer row of the Estimator table shows the blended or weighted-average costs across all your scenarios. This gives you a high-level view of your overall costs, such as the average cost per request and projected monthly cost, based on the mix of workloads you've defined.

How accurate is the Tokenizer?

The tokenizer at the bottom is a rough estimator. It uses a simple character-to-token ratio that you can set in the Assumptions. While useful for quick checks, it is not a substitute for the official tokenizer from your model provider. For precise billing and accurate counts, always use the provider's tool.

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