AI Token Calculator

Use this AI token calculator to get instant token cost estimates across major AI models. See how much GPT-5, Claude, Gemini, or DeepSeek output will cost you per text input and output.

Prompt / Context

Input Total Tokens

Characters 0

Words 0

Est. Tokens 0

What You Can do With This AI Token Calculator

This AI token calculator helps you measure and compare token costs, token usage, and API costs across different models such as OpenAI, Anthropic Claude, and Google Gemini. Use it to understand the maximum input and maximum output allowed by each model so you can manage token usage and costs more efficiently.

Popular AI Models API Cost

Estimate API token costs for input tokens, output tokens, and cached tokens. Use this AI token calculator to identify which model fits your budget and performance needs.

Detailed Token Insights

Each token calculator result includes characters, word count, input token, and output token estimates. You can view total token costs per model, monitor API costs, and plan your text processing within the token limit. No Excel sheet needed.

Compare GPT Models (and others)

Compare models like GPT-5, GPT-4o, Claude, Gemini, Perplexity Sonar, DeepSeek, and Grok with real-time token calculator data.

Current API Prices for the Latest LLM Models

These are the latest models’ API costs per input and output tokens.

GPT-5.1 API Price

The GPT API prices are per 1M tokens.

Input

$1.25

Cached input

$0.125

Output

$10

Gemini 3 Pro Preview API Price

Gemini API prices are charged per million tokens.
*If your prompt is for fewer than 200,000 tokens, it’s cheaper. If it’s more than 200,000 tokens, the price is premium.*

Input

Cached input

Output

Sonnet 4.5 API Price

Anthropic’s latest, most intelligent model yet.

Input

Cached input

Output

Grok 4 Fast API Price

Grok’s fastest, most cost-efficient model to date, with an impressive 2M context window.

Input

Cached input

Output

DeepSeek-V3.2-Exp API Price

DeepSeek-V3.2-Exp is available in a thinking or non-thinking mode.

Input

Cached input

Output

Sonar Deep Research API Price

Announced in January, Sonar Deep Research conducts exhaustive searches and generates comprehensive reports.

Input

Cached input

Output

FAQs

1. What is the AI Token Cost Calculator?

The AI Token Cost Calculator is a free tool that helps you estimate how much it costs to process text using different AI language models. It breaks down input, output, and total costs for providers like OpenAI, Anthropic, Google Gemini, Perplexity, and DeepSeek.

2. What are “tokens” in AI models?

Tokens are chunks of text that AI models use to process language. One token is roughly four characters of English text. For example, the word “ChatGPT” is about two tokens.

3. Why should I calculate token costs?

Because every AI model charges per token, knowing the token count helps you predict costs before sending text to the API. It’s especially useful if you run chatbots, automation tools, or content generators and want to manage expenses accurately.

4. Can I compare multiple models side by side?

Yes. The calculator automatically generates pricing cards for all major AI models so you can easily compare costs across providers in one place.

5. Will this calculator be updated with new models?

Yes. As new AI models and pricing are released, the tool will be updated to include them so you always have the most accurate cost comparison.

6. Which is the most expensive model to date?

The most expensive model among the ones you listed is OpenAI’s o1-pro (Standard Tier), with pricing of $150 per 1 million input tokens and $600 per 1 million output tokens.

7. What is the most affordable model to date?

The cheapest text model to date is OpenAI’s gpt-5-nano, priced at $0.05 per 1 million input tokens and $0.40 per 1 million output tokens.