# Cohere Command Custom Model: RAG-Tuned Foundation

> Source: https://sukruyusufkaya.com/learn/fine-tuning-cookbook/ftc-cohere-command-custom
> Updated: 2026-08-18T11:12:11.154Z
> 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 fine-tuning Cohere console üzerinden, JSONL format, citation token training native. Production deploy Cohere endpoint veya enterprise self-host.