Original Browser Utilities · Transparent Assumptions

Experiments & Practical Utilities

Lightweight, deterministic calculators built for UltraMythos readers. Every utility runs locally in your browser and documents its underlying formulas and limitations. We never disguise a static formula as a live cloud benchmark.

Original Browser Utilities · Client-Side Execution

UltraMythos Digital Laboratory

Transparent, deterministic utilities grounded in published API token rates and Apple/NVIDIA hardware bandwidth specifications. No simulated live benchmark claims.

Estimated Monthly API Cost $14.20 / mo
Standard Pro Subscription $20.00 / mo
Economic Verdict & Break-Even Analysis

At 25 prompts/day with 50% prompt caching, direct API billing saves ~$5.80/month compared to a flat $20 subscription.

Methodology: Assumes 22 active workdays/month. Cached tokens are billed at 10% of base input rate. Does not include web-search per-request surcharges.

Utility Methodology & Assumptions Disclosure

1. Subscription vs. API Break-Even Calculator: Token pricing presets reflect published developer rates from Anthropic (Claude Platform Docs), Google (Gemini API Pricing), and OpenAI (OpenAI API Pricing) verified October 2026. Prompt cache hits are modeled at 10% of the base input token rate over 22 workdays per month.

2. Local LLM Hardware Matchmaker: Memory bus bandwidth figures (546 GB/s for 40-core M4 Max; 614 GB/s for 40-core M5 Max; 460 GB/s for 32-core M5 Max) are sourced directly from Apple MacBook Pro Technical Specifications. Practical token generation speed assumes 68% memory bandwidth utilization at batch size 1.