tl;dr: Netlify partnered with OpenRouter to expand model choice in its Agent Runners (coding agents) and AI Gateway, adding open models like Kimi K3, GLM 5.2, and DeepSeek V4 alongside Claude, GPT, and Gemini. In a test generating a simple coffee shop site, credit costs varied wildly—from 2.4 credits (DeepSeek V4 Flash) to over 1,000 (Claude Opus)—with Opus producing the most polished designs but often overspending, while mid-tier models like GPT 5.6 Terra offered strong value. Follow-up posts will evaluate models on more complex app scenarios involving databases, auth, and AI integration.