Fyxer splits email into 30-50 specialized models, hits 53% draft acceptance

How Fyxer built an AI executive assistant people trust

Fyxer breaks email into 30-50 specialized models—reply decision, intent analysis, memory retrieval, draft generation. Trained on 500K+ hours of human EA workflows, fine-tuned via LoRA, and improved through a DPO loop from user edits. Current draft acceptance rate: 53%; 90-day retention: 90%. The post doesn't specify which OpenAI model versions are used.