NeoHorse 1 4B
NeoHorse-1-4B is a 4B causal language model released by TokenRhythm under the apache-2.0 license. It is a fine-tune of Qwen/Qwen3.5-4B, post-trained for text-based agent harnesses, tool use, coding, and instruction following, and described as an initial prototype toward recursive self-improvement. The release contains language-model weights only, is repackaged for text-only inference, and omits vision weights; repackaging changed configuration and tensor key names without changing fine-tuned tensor values.
At a glance
- Parameters
- 4.21B
- Architecture
- qwen3_5_text
- Context length
- 262,144
- License
- apache-2.0
- Disk space
- 7.8 GB
- Software
- vLLM
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Add my hardwareBest for
- Text generation
- Tool use within text-based agent harnesses
- Coding-related tasks
- Reasoning tasks
- Instruction following
Tradeoffs
- Language-model weights only
- Vision weights are not included
- Repackaged for text-only inference only
- Packaged configuration and tensor key names differ due to repackaging
- Model facts do not document performance, compatibility, or hardware requirements
Ways to run it
vLLM · Linux
Repository-specific command in publisher documentation; confirm dependencies and hardware in the source.
vllm serve "$MODEL_PATH" --served-model-name neohorse-1-4b --host 0.0.0.0 --port 8000 --max-model-len 262144 --reasoning-parser qwen3 --enable-auto-tool-choice --tool-call-parser qwen3_coderExplore its uses
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