If you shipped an AI-powered product in late 2025 and haven't checked your OpenAI invoice recently, brace yourself. In April 2026, OpenAI quietly doubled GPT-5.5's list price compared to GPT-5.4 — input tokens jumped from $2.50 to $5.00 per million, and output tokens from $15 to $30. Anthropic followed a similar trajectory with Opus 4.7, where real-world costs rose 30–40% due to higher token consumption per request, even though the sticker price stayed flat. Both companies are heading toward IPOs. Prices are likely to keep climbing. This post walks through a practical architecture for building a multi-model routing layer that automatically balances cost, latency, and quality — so your production AI app doesn't become collateral damage in the frontier model pricing war. The Numbers Are Worse Than They Look OpenRouter published a study in April 2026 analyzing real-world usage from their platform.…