# LocalAI v4.2.1 — Release & Upgrade Intelligence
- **Product:** LocalAI (https://localai.io)
- **Version:** v4.2.1
- **Released:** May 11, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/localai/updates/v4.2.1/

## Executive Summary (TL;DR)
LocalAI v4.2.1. Source highlight: Exciting New Features 🎉

## New Features
- feat: add ds4 backend (DeepSeek V4 Flash) with tool calls, thinking, KV cache
- feat(ollama): report model capabilities + details on /api/tags and /api/show