LLM Token Cost Estimator
Compare input/output token API costs across OpenAI GPT-4o, Anthropic Claude 3.5, and Google Gemini models.
Compare AI model API costs per request and per month
Calculate exact API costs for GPT-4o, GPT-4o-mini, Claude 3.5 Sonnet, Haiku, Gemini 1.5 Pro, and DeepSeek models based on your token usage.
How LLM Token Cost Estimator & Model Pricing Comparison Works
Paste or enter your input in the field above. Most tools update in real time. Click the Copy button to copy the output. All processing happens in your browser—your data never leaves your device unless the tool explicitly uses a server feature (such as URL shortening or bcrypt hashing).
This tool is part of the LLM Tools category. Check similar tools below. All everytools are free, no signup required. Works on desktop and mobile.
Common Use Cases
- Budget monthly API costs for AI startups and LLM wrapper products
- Compare token pricing between GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro
- Optimize prompt lengths to reduce OpenAI API bills
You might also like
Other LLM Tools
Prompt Token Counter
Count characters, words, and estimate tokens for LLM prompts. Useful for OpenAI, Claude, and other AI APIs.
LLM JSON Extractor
Extract JSON from LLM responses. Parse code blocks and clean malformed JSON from AI output.
MCP Tool Schema Generator
Generate Model Context Protocol (MCP) tool definitions. Create name, description, and inputSchema JSON for MCP servers.
MCP Config Formatter
Format and validate MCP server configuration (mcp.json). Pretty-print and check structure for Cursor, Claude, and other MCP clients.
llms.txt Generator
Generate llms.txt for your website. Creates AI-readable discovery file with name, summary, contact, and services. Spec 1.1.1 compatible.
Prompt Template Builder
Build prompts with {{variable}} placeholders. Fill in values and preview. For reusable AI prompts.
System Prompt Generator
Generate system prompts for LLMs. Role, task, constraints, output format. For ChatGPT, Claude, etc.
Few-Shot Prompt Builder
Build few-shot prompts with input-output examples. Structure examples for in-context learning.
Frequently Asked Questions
- How is LLM API pricing calculated?
- LLM providers charge per 1 Million (1M) input tokens and output tokens. Output tokens are typically 3x to 4x more expensive than input tokens.
- How many words are in 1,000 tokens?
- In English, 1,000 tokens equal approximately 750 words (or ~4,000 characters).
- Which AI model is most cost-effective for high volume?
- GPT-4o-mini, Gemini 1.5 Flash, and DeepSeek-V3 offer the lowest cost per 1M tokens for lightweight tasks.