The Kobeissi Letter reports open-source models like DeepSeek V4 Pro cost over 50 times less per token than Anthropic Fable 5, pressuring margins as CapEx surges.

DeepSeek GLM Qwen adoption accelerates token economics and cost optimization in multi-agent LLM systems as daily burns hit hundreds of millions.

DeepSeek V4 Pro dominates EasyRouter API calls in first week, slashing costs to 21 yuan for 600M tokens versus 84 yuan direct or 1000+ yuan GPU runs.