How to use from
Hermes Agent
Start the llama.cpp server
# Install llama.cpp:
brew install llama.cpp
# Start a local OpenAI-compatible server:
llama serve -hf abenzerps/Spark-X2.5-4B-GGUF:
Configure Hermes
# Install Hermes:
curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash
hermes setup
# Point Hermes at the local server:
hermes config set model.provider custom
hermes config set model.base_url http://127.0.0.1:8080/v1
hermes config set model.default abenzerps/Spark-X2.5-4B-GGUF:
Run Hermes
hermes
Quick Links

Compatibility: These GGUF files require llama.cpp b10828 or later, which includes official support for the Spark-X2.5 (spark2_5) architecture. Applications with a bundled runtime must use an equivalent or newer build. llama.cpp support

Spark-X2.5-4B GGUF

GGUF quantizations of XHToken/Spark-X2.5-4B, a 4B general-purpose language model for reasoning, coding, tool use, and agentic workflows. Native context: 1,048,576 tokens (1M).

Benchmarks

Spark-X2.5-4B benchmark results

Benchmark results reported by XHToken for Spark-X2.5-4B in thinking mode.

GGUF files

Quantization File Size
Q4_0 Spark-X2.5-4B-Q4_0.gguf 2.41 GB
Q4_K_M Spark-X2.5-4B-Q4_K_M.gguf 2.60 GB
Q5_K_M Spark-X2.5-4B-Q5_K_M.gguf 2.98 GB
Q6_K Spark-X2.5-4B-Q6_K.gguf 3.38 GB
Q8_0 Spark-X2.5-4B-Q8_0.gguf 4.38 GB

Includes the upstream chat_template.jinja. Checksums: SHA256SUMS.txt.

Usage

llama-cli -m Spark-X2.5-4B-Q4_K_M.gguf -c 131072 -cnv

Source

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