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💰 Cost Calculator — Estimate Your Monthly Spend

Input tokens/day: Output tokens/day:
Model Provider Input ($/1M) Output ($/1M) Context Blended Cost *

* Blended cost assumes 3:1 input-to-output ratio (typical chat workload). Prices are per 1 million tokens. Data sourced live from OpenRouter API. Some models may have additional fees (image processing, tool calls, caching).

How LLM API Pricing Works

LLM APIs charge per token — roughly ¾ of a word. A 1,000-word article is about 1,300 tokens. Most providers split pricing into input tokens (your prompt) and output tokens (the model's response). Output tokens typically cost 3-5× more than input.

Some providers offer batch pricing (50% off for non-real-time requests) and cached input discounts (up to 90% off for repeated prompt prefixes). Always check both input and output rates when comparing models — a cheap input price can hide expensive outputs.

This tracker pulls live pricing from OpenRouter, which aggregates 300+ models across all major providers. Prices update automatically.