v4.2.1

mudler/LocalAIv4.2.1May 11, 2026by mudler

AI Summary

A patch release adding support for the DS4 backend (DeepSeek V4 Flash) and enhancing the Ollama API with model capabilities reporting.

Key Highlights

Added DS4 backend with tool calls, thinking, and KV cache support
Enhanced Ollama API with model details on /api/tags and /api/show
Updated ik-llama.cpp fork to latest version

New Features

DS4 backend support
Ollama API model details

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at master -->

## What's Changed
### Exciting New Features 🎉
* feat: add ds4 backend (DeepSeek V4 Flash) with tool calls, thinking, KV cache by @localai-bot in https://github.com/mudler/LocalAI/pull/9758
### 👒 Dependencies
* chore(deps): bump the go_modules group across 1 directory with 2 updates by @dependabot[bot] in https://github.com/mudler/LocalAI/pull/9759
### Other Changes
* docs: :arrow_up: update docs version mudler/LocalAI by @localai-bot in https://github.com/mudler/LocalAI/pull/9762
* ci(bump-deps): register ds4 + move version pin into the Makefile by @localai-bot in https://github.com/mudler/LocalAI/pull/9761
* chore: :arrow_up: Update ikawrakow/ik_llama.cpp to `eb570eb96689c235933b813693ca28ab9d3d26de` by @localai-bot in https://github.com/mudler/LocalAI/pull/9764
* feat(ollama): report model capabilities + details on /api/tags and /api/show by @localai-bot in https://github.com/mudler/LocalAI/pull/9766


**Full Changelog**: https://github.com/mudler/LocalAI/compare/v4.2.0...v4.2.1