Tools
Free calculators that run in your browser. Each one shows its formula, its assumptions and its sources. Nothing you type leaves your device.
VRAM calculator for local LLMs
Weights, KV cache and margin for 12 open models at any quantization and context length, checked against real model files.
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LLM API cost calculator
Monthly cost of a workload on 12 models from 4 providers, with caching, batch discounts and the tokenizer change Anthropic documents.
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