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turbo-fieldfare

Swift and Metal runtime that runs Gemma 4 26B-A4B in about 2 GB RAM

Stars
7.1k
License
Apache-2.0
Last commit
Oct 2026
Last release
Oct 2026
Language
Swift
Stars, last 15 weeks+7,101
18 Jul 2026: 0 stars25 Jul 2026: 223 stars1 Aug 2026: 3,726 stars8 Aug 2026: 5,367 stars15 Aug 2026: 5,957 stars22 Aug 2026: 6,182 stars29 Aug 2026: 6,420 stars5 Sept 2026: 6,579 stars12 Sept 2026: 6,664 stars19 Sept 2026: 6,732 stars26 Sept 2026: 6,784 stars3 Oct 2026: 6,818 stars10 Oct 2026: 6,850 stars17 Oct 2026: 6,921 stars24 Oct 2026: 7,023 stars31 Oct 2026: 7,101 stars

0 on 18 Jul 20267,101 on 31 Oct 2026

From GitHub's daily star counts.

Checked on GitHub.

Overview

TurboFieldfare is a model-specific Swift and Metal inference runtime for Gemma 4 26B-A4B (4-bit MLX affine) on Apple Silicon. It keeps the 1.35 GB shared core and FP16 KV cache in memory and streams only the needed experts from SSD through a 16-slot LFU cache. It ships a native Mac app, a CLI, an experimental loopback OpenAI-compatible server and optional image input.

Who it is for: Mac users wanting a large local MoE model on 8 GB Apple Silicon

Strengths

  • Runs a 26B MoE model in about 2 GB of weights plus 4K KV cache on 8 GB Macs
  • Measured 5.1-6.3 tok/s on an 8 GB M2 Air and 31-35 tok/s on a 24 GB M5 Pro
  • Includes Mac app, CLI and loopback server with Chat Completions, streaming and function tools
  • Installer streams and repacks weights with hash-verified manifest, no second full checkpoint on disk

Weaknesses

  • Supports only one pinned model, Gemma 4 26B-A4B instruction checkpoint
  • Requires macOS 26, Metal 4 and Swift 6.2; arm64 only
  • Needs about 14.3 GB of SSD space and a roughly 15 GB first download
  • Server has no authentication or TLS and is marked experimental; audio and video unsupported

What it needs

  • RAM ≥ 8 GB
  • GPU required
  • Needs Swift 6.2+, macOS 26 SDK, Metal 4, Hugging Face (model download)
  • Models: Gemma 4 26B-A4B IT (MLX 4-bit, .gturbo format)
  • port 8080

Quick answers

Is turbo-fieldfare open source?

Yes. Its code is on GitHub under the Apache-2.0 license.

Does turbo-fieldfare need a GPU?

Yes, it needs a GPU. Plan for at least 8 GB of RAM.

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