Multi-model routing used to be a luxury of large platform teams. In 2026 it is a survival skill: Claude Opus 4.7 token costs can wreck a startup P&L if you let it write the boilerplate that DeepSeek V4 can produce for one-fortieth the price. I spent two weeks rebuilding our internal Claude Code Templates on top of HolySheep AI's OpenAI-compatible gateway, and this article is the field report: what scored well, what broke, and what the monthly invoice looked like at the end of the test.
Why "Claude Code Templates + multi-model routing" works in 2026
The pattern is simple: pick the cheapest model that can pass the test for each subtask. The hard part is plumbing — keeping one SDK, one auth flow, and one billing relationship across the whole stack. HolySheep AI exposes an OpenAI-compatible surface at https://api.holysheep.ai/v1, so the official openai