Tools
Free LLM Calculators
Browser-based tools for developers and AI builders. No sign-up, nothing sent anywhere, and every formula is shown so you can check the numbers.
LLM API Cost Calculator
Enter input, output, and cached tokens per request and your request volume, then compare the estimated bill across 12 models from 7 providers — Claude, GPT-5.5, Gemini, Grok, DeepSeek, Mistral, and Kimi — using published per-million-token prices.
Open the cost calculator →LLM VRAM Calculator
Enter your GPU memory to see which model sizes and quantizations fit, or size a specific model by its parameters, quantization, and context length. The math works for any model, including ones released after the page.
Open the VRAM calculator →Cost and hardware are the two halves of the same question — the cost calculator estimates what an API model bills, and the VRAM calculator estimates what running a model yourself demands. Both run entirely in your browser.