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SH4P3S/apertus-4b-r2-Q5_K_M.gguf overview

apertus 4b r2 Q5 K M Round 2 QLoRA tool use fine tune of swiss ai/Apertus v1.1 4B Instruct https://huggingface.co/swiss ai/Apertus v1.1 4B Instruct , quantized…

ggufllama.cpptool-useapertusbase_model:swiss-ai/Apertus-v1.1-4B-Instructbase_model:quantized:swiss-ai/Apertus-v1.1-4B-Instructlicense:apache-2.0endpoints_compatibleregion:usconversational

Runs locally from ~2.59 GB disk (4 GB VRAM class GPUs with llama.cpp / guIDE).

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Model Details

Model IDSH4P3S/apertus-4b-r2-Q5_K_M.gguf
AuthorSH4P3S
Pipeline
Licenseapache-2.0
Base modelswiss-ai/Apertus-v1.1-4B-Instruct
Last modified2026-07-12T11:45:27.000Z

Model README

---

license: apache-2.0

base_model: swiss-ai/Apertus-v1.1-4B-Instruct

tags:

  • gguf
  • llama.cpp
  • tool-use
  • apertus

---

apertus-4b-r2-Q5_K_M

Round-2 QLoRA tool-use fine-tune of swiss-ai/Apertus-v1.1-4B-Instruct, quantized to Q5_K_M for llama.cpp (converted from f16, never quant→quant).

Round-2 changes vs round 1: direct weather/fetch tool selection (no forced chaining), notes answers stay grounded in note hits, date anchoring (Current date: <Weekday>, <YYYY-MM-DD> as the last system-prompt line — the runtime must inject it), and a higher share of clarifying questions.

Intended to run with its paired system prompt and tools.gbnf grammar (lazy-triggered on <tool_call>); sampling temp 0.8, top_p 0.9, repeat_penalty 1.0, context 4096.

  • File: apertus-4b-r2-Q5_K_M.gguf
  • Size: 2,777,042,176 bytes
  • SHA-256: 5219675afd2da7108c56f43284945b39e76e1e1d5aae1aca85a630c98d664794

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