Estimate the VRAM, system RAM, and disk space needed to run an open-weight LLM locally, and which common GPUs and Macs it fits on. Covers Llama, Mistral, Qwen, DeepSeek, Gemma, Phi, Code Llama, Command R, Yi, SmolLM, StableLM, Grok, Falcon, and MiniCPM across FP32 through Q2_K quantization.
This page documents the MCP tool findutils:llm_requirements_calculator. See the REST reference →
Call it over MCP
Tool name findutils:llm_requirements_calculator
· no API keys · 120 requests/min per IP
Claude Code
claude mcp add findutils --transport http https://mcp.findutils.com/Claude Desktop — claude_desktop_config.json
{
"mcpServers": {
"findutils": {
"url": "https://mcp.findutils.com/"
}
}
}Raw JSON-RPC (any MCP client) — verified example
curl -X POST https://mcp.findutils.com/ \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "llm_requirements_calculator",
"arguments": {
"model": "llama-3.1-8b",
"quantization": "q4_k_m",
"context_length": 8192
}
}
}'Input schema
| Argument | Type | Required | Description |
|---|---|---|---|
| model | string (llama-3.2-1b | llama-3.2-3b | llama-3.1-8b | llama-3.1-70b | llama-3.1-405b | mistral-7b | mistral-nemo | mixtral-8x7b | mixtral-8x22b | mistral-small-3 | qwen-2.5-0.5b | qwen-2.5-1.5b | qwen-2.5-3b | qwen-2.5-7b | qwen-2.5-14b | qwen-2.5-32b | qwen-2.5-72b | qwen-2.5-coder-7b | qwen-2.5-coder-32b | qwen-qwq-32b | deepseek-r1-distill-7b | deepseek-r1-distill-14b | deepseek-r1-distill-32b | deepseek-r1-distill-70b | deepseek-v3 | deepseek-r1 | gemma-2-2b | gemma-2-9b | gemma-2-27b | phi-3-mini | phi-3-medium | phi-4 | codellama-7b | codellama-13b | codellama-34b | codellama-70b | qwen-3-0.6b | qwen-3-1.7b | qwen-3-4b | qwen-3-8b | qwen-3-14b | qwen-3-32b | qwen-3-235b | command-r-35b | command-r-plus | yi-1.5-6b | yi-1.5-9b | yi-1.5-34b | smollm-2-135m | smollm-2-360m | smollm-2-1.7b | stablelm-2-1.6b | stablelm-2-12b | grok-1 | falcon-3-1b | falcon-3-3b | falcon-3-7b | falcon-3-10b | minicpm-3-4b) | yes | Model id (or exact display name). One of: llama-3.2-1b, llama-3.2-3b, llama-3.1-8b, llama-3.1-70b, llama-3.1-405b, mistral-7b, mistral-nemo, mixtral-8x7b, mixtral-8x22b, mistral-small-3, qwen-2.5-0.5b, qwen-2.5-1.5b, qwen-2.5-3b, qwen-2.5-7b, qwen-2.5-14b, qwen-2.5-32b, qwen-2.5-72b, qwen-2.5-coder-7b, qwen-2.5-coder-32b, qwen-qwq-32b, deepseek-r1-distill-7b, deepseek-r1-distill-14b, deepseek-r1-distill-32b, deepseek-r1-distill-70b, deepseek-v3, deepseek-r1, gemma-2-2b, gemma-2-9b, gemma-2-27b, phi-3-mini, phi-3-medium, phi-4, codellama-7b, codellama-13b, codellama-34b, codellama-70b, qwen-3-0.6b, qwen-3-1.7b, qwen-3-4b, qwen-3-8b, qwen-3-14b, qwen-3-32b, qwen-3-235b, command-r-35b, command-r-plus, yi-1.5-6b, yi-1.5-9b, yi-1.5-34b, smollm-2-135m, smollm-2-360m, smollm-2-1.7b, stablelm-2-1.6b, stablelm-2-12b, grok-1, falcon-3-1b, falcon-3-3b, falcon-3-7b, falcon-3-10b, minicpm-3-4b. |
| quantization | string (fp32 | fp16 | q8_0 | q6_k | q5_k_m | q4_k_m | q3_k_m | q2_k) | no | Quantization id. Default: "q4_k_m". Default: "q4_k_m". |
| context_length | integer | no | Context window in tokens (512-131072). Default: 8192. Default: 8192. |
| batch_size | integer | no | Concurrent sequences (1-64). Default: 1. Default: 1. |
Example arguments (verified)
{
"model": "llama-3.1-8b",
"quantization": "q4_k_m",
"context_length": 8192
}Also a REST endpoint
The same tool answers plain HTTP at
POST /api/tools/llm-requirements-calculator/execute — no key, 60 requests/min.
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