# Cohere Command Custom Model: RAG-Tuned Foundation

> Source: https://sukruyusufkaya.com/en/learn/fine-tuning-cookbook/ftc-cohere-command-custom
> Updated: 2026-05-14T14:43:00.602Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part XIV — Closed-Source API Fine-Tuning
**TLDR:** Cohere Command R/R+ — RAG-native baseline. Custom Model FT via Cohere console, JSONL format, native citation token training. Production deploy Cohere endpoint or enterprise self-host.