Longleaf-35B-A3B

In development. Weights may be updated at any time.

Longleaf is our local model for coding and agent work: repository edits, debugging, structured tools, and clear answers.

Built on Qwen3.6-35B-A3B.

  • 35B total / 3B active parameters.
  • MLX 4-bit weights.
  • 262,144-token configured context.
  • Development hardware: M1 Ultra, 64 GB unified memory, 48-core GPU.
  • Splash thinking levels: none, low, medium, high, xhigh, max.

Coding Benchmarks

EvalPlus 0.3.1, 164 tasks, pass@1. Thinking off, greedy sampling, 2,048-token output cap, 262,144-token configured context. Generation used our M1 Ultra Splash runtime.

Model HumanEval HumanEval+ Median generation time CLI sample (5 tasks)
Qwen3.6 base 95.1% 90.9% 1.19 s 1/5
Longleaf 96.3% 91.5% 0.97 s 1/5
Longleaf Abliterated 95.7% 90.9% 0.94 s 1/5

Prompts: 159 tokens median, 77โ€“441 range. Median output lengths: 231 / 198 / 195 tokens, respectively.

CLI sample: five Terminal-Bench 2 tasks on ARM64, thinking off. Per task: 300 seconds, 24 model calls, 32 tool calls, 2,048 output tokens per call.

Pi Coding Run

Our M1 Ultra Splash runtime, medium thinking, model already loaded:

Model calls Prompt tokens per call Output tokens Decode First token
4 1,731โ€“2,236 439 total 104โ€“130 tokens/s 1.3 s first; 0.2โ€“0.3 s cached

Read, edit, and test completed in about 6 seconds, with 4/4 tests passing.

Measured on a cached coding task.

Run

pip install -U mlx-lm
mlx_lm.generate --model redhillsmediafl/Longleaf-35B-A3B --prompt "Help me debug this code."

License

Apache 2.0. This release contains modified model weights, based on Qwen3.6-35B-A3B and the MLX conversion. Review generated code before running it and restrict agent tool permissions.

Abliterated version ยท Red Hills Media ยท GitHub

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