| # Benchmark Report: north-mini-code (unknown) |
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| **Date:** 2026-06-15 |
| **Author:** WITCHEER |
| **Platform:** NVIDIA GeForce RTX 5090 Benchmark Rig (capsule) |
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| --- |
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|
| ## Findings |
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|
| Cohere **North-Mini-Code-1.0** — a 30B-total / **3B-active** MoE (`cohere2moe`), Apache-2.0, marketed for |
| agentic coding. The arch merged into llama.cpp on 2026-06-13 ([PR #24260](https://github.com/ggml-org/llama.cpp/pull/24260), |
| validated on an RTX 5090 inside the PR), so these are the first consumer-Blackwell numbers. Run at **Q6_K** |
| (23.8 GiB, peak 25.6/32 GB VRAM, no offload), think-OFF to match the board. |
| |
| **1. It lands LAST on the 9-model agentic board.** Agentic Score **90.4** (task-success 83.3%, tool-eff 0.94), |
| tied with Nex-N2-mini and below generalist A3B models (Qwen3.5-35B-A3B 97.5, Nemotron-Cascade-2-30B-A3B 96.9). |
| Tool-efficiency is fine; task-success is the gap. The agentic-coding tuning doesn't translate to top |
| tool-driving on this harness. *(chart: `north-mini-board.png`)* |
| |
| **2. ARC-Challenge is reasoning-gated — and the think-OFF board understates a reasoning model.** |
| ARC-Challenge **60.2% think-OFF → ~95% think-ON** (+35pt; think-ON is a 40-question spot-check, 38/40). |
| The Challenge subset is selected for multi-step reasoning; forcing a bare-letter answer (think-OFF) measures |
| the wrong thing. GSM8K is unaffected (95.8% either way) because it's generative — the model writes its |
| solution regardless. North-Mini is genuinely a reasoning model (`<|START_THINKING|>` tokens; its template |
| gates on `reasoning`/`reasoning_effort`, not `enable_thinking`). *(chart: `north-mini-arc-gate.png`)* |
| |
| **3. The reality anchor can't adjudicate it (different protocol).** Cohere self-reports **67.6% SWE-bench |
| Verified** (full set, their scaffold, 1×H100 FP8) — which would top this board's best *measured* resolve (63%). |
| But the rig's anchor axis is our native loop on a 30-hardest-bug subset, graded officially. Different scaffold, |
| subset, and difficulty: the two numbers don't share an axis. So North-Mini is **last on synthetic, claims-best |
| on real, and the gap is unresolved** — either the synthetic agentic bench under-rates a model trained on real |
| SWE harnesses, or the vendor number doesn't reproduce on a standardized loop (the Qwopus-Coder precedent: |
| claimed 67%, scored 57% on our subset). A fresh same-protocol run would resolve it; out of scope here. |
|
|
| **Coder strengths are real:** HumanEval **86.6%**, GSM8K **95.8%**, decode **305 tok/s** (Q6_K). The vendor |
| "2.8x output throughput vs Devstral Small 2" is a 1×H100 FP8 number; on a 5090 you simply get fast A3B decode. |
| |
| > **Methodology note:** benchmarking this reasoning model think-OFF first produced a contaminated, ~26×-slower |
| > run — the harness's `enable_thinking:False` is a no-op for `cohere2moe`, which gates on `reasoning`. Fixed in |
| > the harness (send `reasoning`/`reasoning_effort` + serve with `--jinja`); verified 106→4 tokens/question. |
| |
| --- |
| |
| ## Model |
| |
| | Field | Value | |
| |-------|-------| |
| | Model | north-mini-code | |
| | Parameters | 30.48 B (dense) | |
| | Quantization | unknown | |
| | File size | 23.76 GiB | |
| | Engine | llama.cpp (CUDA 12.8 (patched)) | |
| |
| ## Hardware |
| |
| | Component | Spec | |
| |-----------|------| |
| | GPU | NVIDIA GeForce RTX 5090 | |
| | CPU | AMD Ryzen 5 9600 | |
| | RAM | 64GB DDR5-5600 | |
| | OS | Ubuntu 26.04 LTS | |
| | CUDA | 12.8 (patched) | |
| |
| --- |
| |
| ## Quality Benchmarks |
| |
| All benchmarks use generative evaluation via llama-server chat completions. Multiple-choice tasks (MMLU, ARC, HellaSwag) use letter extraction instead of loglikelihood scoring -- results are internally consistent for model comparison but absolute scores may differ from logprob-based evaluations by 5-15%. |
| |
| ### Summary |
| |
| | Benchmark | Score | Metric | |
| |-----------|------:|--------| |
| | **MMLU** | **73.32%** | accuracy | |
| | **ARC-Challenge** | **60.24%** | accuracy | |
| | **HellaSwag** | **70.82%** | accuracy | |
| | **HumanEval** | **86.59%** | pass@1 | |
| | **GSM8K** | **95.83%** | exact_match | |
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|
| ### MMLU Breakdown by Category |
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|
| | Category | Score | Correct / Total | |
| |----------|------:|----------------:| |
| | Stem | 66.49% | 1,002 / 1,507 | |
| | Humanities | 72.25% | 1,143 / 1,582 | |
| | Social Sciences | 85.12% | 1,407 / 1,653 | |
| | Other | 70.02% | 1,588 / 2,268 | |
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| *Sampled at 50% (seed 42)* |
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| --- |
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| ## Speed Benchmarks |
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| Measured with `llama-bench`. All layers GPU-offloaded (`-ngl 99`). |
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| ### Prompt Processing (tokens/s) |
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|
| | Context Length | Speed | +/-sigma | |
| |---------------:|------:|---------:| |
| | 128 | 3,661 | 20.2 | |
| | 512 | 9,468 | 59.1 | |
| | 2048 | 9,302 | 48.0 | |
| | 4096 | 9,026 | 17.3 | |
| | 8192 | 8,937 | 71.5 | |
| | 16384 | 8,643 | 98.6 | |
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| ### Generation (tokens/s) |
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|
| | Metric | Speed | +/-sigma | |
| |--------|------:|---------:| |
| | tg128 | 304.8 | 1.2 | |
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| --- |
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| ## Methodology |
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| ### Evaluation Framework |
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| Custom generative evaluators built for this rig. All benchmarks run through llama-server's `/v1/chat/completions` endpoint. |
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|
| - **Scoring:** Generative evaluation (not loglikelihood) |
| - **Thinking:** disabled |
| - **MCQ scoring:** First valid letter extracted from response (A/B/C/D) |
| - **Sampling:** 50% of dataset used |
| - **Temperature:** 0 (deterministic) |
| - **Max tokens:** 2,048 |
| - **GPU offload:** All layers (`-ngl 99`) |
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| --- |
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| *Benchmarked by WITCHEER on the RTX 5090 Benchmark Rig. Source: [github.com/notwitcheer/llm-bench-rig/blob/main/reports/north-mini-code.md](https://github.com/notwitcheer/llm-bench-rig/blob/main/reports/north-mini-code.md). Dataset: [huggingface.co/datasets/witcheer/rtx-5090-benchmarks/blob/main/reports/north-mini-code.md](https://huggingface.co/datasets/witcheer/rtx-5090-benchmarks/blob/main/reports/north-mini-code.md).* |
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