# OpenAI GPT-5/5.1 Distillation Pipeline: Stored Completions + FT API Hybrid

> Source: https://sukruyusufkaya.com/en/learn/fine-tuning-cookbook/ftc-openai-gpt5-distillation
> Updated: 2026-05-14T14:43:00.171Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part XIV — Closed-Source API Fine-Tuning
**TLDR:** OpenAI 'Stored Completions' feature (2024+): after GPT-5/5.1 inference, save completions → free dataset for distill. FT GPT-4o-mini on these completions → small-model-big-knowledge transfer. License matters (only completions you generated with your API key).