Lindy Switches From Anthropic to DeepSeek v4, Saves Millions While Boosting Performance

According to Beating, an AI monitoring platform, Lindy founder Flo Crivello announced that the iMessage AI assistant has migrated all user-facing workloads from Anthropic to open-source model DeepSeek v4. The switch cut costs by millions of dollars while improving performance across multiple core business scenarios.

To support DeepSeek v4, Lindy developed extensive infrastructure and internal tools, requiring roughly 100 times more engineering effort than anticipated. The company selected Atlas Cloud, a relatively niche cloud compute provider, after evaluating major incumbents. While user-facing services now run entirely on DeepSeek v4, Lindy's internal teams continue using Anthropic's models due to enterprise discounts, with Claude Opus retained as a fallback for complex tasks.