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Ourbox-35B-JGOS: Korean-Specialized, Darwin-Evolved 35B-A3B Reasoning MoE — 86.36% on GPQA Diamond

Darwin-Evolved on Qwen3.6-35B-A3B | 35B total / ~3B active | 🇰🇷 Korean-Specialized | Thinking Mode | Hybrid Linear/Full Attention | Multi-Token Prediction | 262K Context | BF16 | Apache 2.0 Darwin FFN-level evolutionary merge → Korean specialization → 86.36% on GPQA Diamond (majority-of-8+)

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Abstract

Ourbox-35B-JGOS is a 35-billion-parameter mixture-of-experts (MoE) reasoning model produced by the Darwin evolutionary breeding platform (FINAL-Bench / VIDRAFT_LAB). Rather than retraining from scratch, Darwin recombines the feed-forward (FFN / MoE expert) tensors of the Qwen3.6-35B-A3B backbone with those of additional specialized donor models, then evolves the merged descendant toward a target objective — here, Korean-language specialization.

Because the merge operates at the expert-FFN level, Ourbox inherits complementary domain and language competencies from multiple sources while preserving the backbone's hybrid-attention topology and 262K long-context behavior. The result is a Korean-specialized reasoning model that remains highly competitive on English graduate-level science: on GPQA Diamond (198 questions across physics, chemistry, biology), Ourbox-35B-JGOS scores 86.36% (171/198) under a majority-of-8+ protocol. On Hugging Face's live GPQA leaderboard this improves on its own Qwen3.6-35B-A3B backbone (86.0) by +0.36 points and edges past GLM-5.1 (86.2) and GLM-5 (86.0) — with only ~3B active parameters.

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GPQA Diamond Leaderboard — Hugging Face Idavidrein/gpqa (2026-07-11)

Ourbox-35B-JGOS on the official Hugging Face GPQA Diamond leaderboard (Idavidrein/gpqa, base-model view, 50 models). FINAL-Bench models in bold:

The FINAL-Bench Darwin family dominates the upper board — 5 of the 20 models ranked above Ourbox are Darwin models (Darwin-398B-JGOS #2, Darwin-28B-REASON #6, Darwin-36B-Opus #8, Darwin-60B-DUO #9, Darwin-27B-Opus #19). At 86.36%, Ourbox-35B-JGOS ranks #21 of 50 on the live leaderboard and — most notably — improves on its own Qwen3.6-35B-A3B backbone (86.0, #24) by +0.36 points, confirming that the Darwin FFN-merge and Korean specialization added capability rather than eroding it. It also edges past GLM-5.1 (86.2, #22) and GLM-5 (86.0, #23) while activating only ~3B parameters.

Ranks reflect the live leaderboard as of 2026-07-11 (which counts quantized/duplicate entries); positions shift as it updates. Ourbox-35B-JGOS is live and listed at #21.

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What Is Darwin?

Darwin is the evolutionary model-breeding platform developed by FINAL-Bench / VIDRAFT_LAB. Rather than allocating further compute to gradient optimization, Darwin treats trained checkpoints as a genetic pool and discovers high-performing descendants through principled recombination of their weight tensors — with a particular focus on the FFN / MoE expert subspace, where domain and language competence is concentrated.

At a high level, the platform performs:

1. Per-tensor compatibility analysis across the backbone and donor models to identify which FFN experts and components transfer cleanly and which require weighted recombination.
2. FFN-level merge & evolution — the descendant's expert tensors are assembled from the pool and iteratively evolved toward a target objective (Korean specialization for Ourbox).
3. Verification via a multi-phase scientific benchmark before release.

Specific algorithmic details of the Darwin engine are proprietary to FINAL-Bench. All Darwin models are released under the base model's open-source license (Apache 2.0).

JGOS is the reasoning-model line built with Darwin; Ourbox is its Korean-specialized 35B-A3B member.

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Evolution Process

Ourbox-35B-JGOS is bred, not trained:

• Backbone: Qwen/Qwen3.6-35B-A3B — the foundation MoE, contributing its hybrid-attention topology (¾ linear + ¼ full), 256-expert routing, MTP head, and 262K context.
• FFN donors: additional specialized models whose feed-forward / expert tensors are recombined into the backbone by the Darwin engine, contributing complementary domain and Korean-language competence.
• Evolution objective: Korean specialization — the evolutionary selection biases the merged expert population toward stronger Korean reasoning and generation, while structural and long-context behavior is inherited intact from the backbone.

The merge operates without gradient optimization on the final assembly; a deployable bfloat16 checkpoint is produced by the Darwin pipeline directly.

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🇰🇷 Korean Specialization

Ourbox-35B-JGOS is specialized for Korean. The Darwin evolutionary process selects and recombines FFN experts to strengthen Korean-language reasoning, comprehension, and generation — targeting natural Korean output, robust handling of Korean scientific/technical text, and reduced character-level corruption on large Korean inputs.

Crucially, this specialization does not come at the cost of general capability: the model's 86.36% GPQA Diamond (in English) improves on its own Qwen3.6-35B-A3B backbone (86.0) on Hugging Face's live leaderboard, evidence that the FFN-merge preserved scientific reasoning depth while adding Korean strength. The model remains fully multilingual (Korean-first), with English, Chinese, Japanese, and other languages inherited from the backbone.

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Architecture

Ourbox-35B-JGOS retains the full Qwen3.6-35B-A3B architecture (qwen3_5_moe codebase):

The hybrid attention design (¾ linear + ¼ full) gives near-linear KV-cache scaling across the 262K window, and the Multi-Token Prediction head provides a built-in draft for speculative decoding.

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GPQA Diamond Evaluation

Methodology

Ourbox-35B-JGOS was evaluated on all 198 GPQA Diamond questions using a two-pass majority-of-8+ protocol (identical to sibling FINAL-Bench reasoning models, for cross-model comparability):

Pass 1 — Greedy baseline

• All 198 questions, deterministic decoding (do_sample=False)
• Up to 5,120 new tokens per question (full <think> trajectories)
• Standard multiple-choice prompt format

Pass 2 — Stochastic majority vote with tiebreaker

• Each question is answered by 8 independent stochastic generations (temperature=0.7, max_tokens=5120); the majority answer is taken
• Where the 8-vote margin is inconclusive (e.g. 3:3 / 3:4 / 4:4), an additional 16-vote tiebreaker round (temperature=0.5) resolves the answer

The final answer for each question is extracted after the </think> delimiter.

Result

Evaluated against the Idavidrein/gpqa gpqa_diamond split. The majority-of-8+ protocol surfaces answers that greedy decoding leaves subdominant — a pattern characteristic of well-formed chain-of-thought models — carrying Ourbox above its Qwen3.6-35B-A3B backbone (86.0) and past GLM-5.1 (86.2) on graduate-level science.

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Usage

from transformers import AutoTokenizer, AutoModelForCausalLM
import torch

tok = AutoTokenizer.from_pretrained("FINAL-Bench/Ourbox-35B-JGOS", trust_remote_code=True)
model = AutoModelForCausalLM.from_pretrained(
    "FINAL-Bench/Ourbox-35B-JGOS",
    torch_dtype=torch.bfloat16,
    device_map="auto",
    trust_remote_code=True,
)

messages = [
    {"role": "user", "content": "상대론적 운동에너지 식을 유도해줘."}
]
text = tok.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = tok(text, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_new_tokens=5120, temperature=0.6, do_sample=True)
print(tok.decode(outputs[0][inputs["input_ids"].shape[-1]:], skip_special_tokens=True))

Answer extraction for evaluations

This is a thinking model — responses always begin with a <think> reasoning trace. For benchmarks, extract the final answer after </think>:

response = tok.decode(outputs[0][inputs["input_ids"].shape[-1]:], skip_special_tokens=True)
idx = response.rfind("</think>")
answer_part = response[idx + len("</think>"):].strip() if idx >= 0 else response

Recommended settings

• Temperature: 0.6–0.7 for reasoning / majority voting; 0.0 for greedy deterministic
• max_new_tokens: ≥5120 to accommodate full <think> trajectories
• Chat template: assistant turn opens with <think> when apply_chat_template(add_generation_prompt=True) is used

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VRAM Requirements

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Key Findings

1. Korean specialization without capability loss. Darwin's FFN-level merge adds Korean-language strength while retaining 86.36% GPQA Diamond — above the model's own Qwen3.6-35B-A3B backbone (86.0). Specialization and general reasoning are not a zero-sum trade under expert-level recombination.

2. Specialization improves on the backbone. On Hugging Face's live GPQA Diamond leaderboard, Ourbox (86.36) exceeds its own Qwen3.6-35B-A3B backbone (86.0) and edges past GLM-5.1 (86.2) and GLM-5 (86.0) — the Darwin FFN-merge added Korean capability without eroding scientific reasoning, at ~3B active parameters.

3. Breeding beats retraining for specialization. A deployable, Korean-specialized 35B checkpoint is produced by evolutionary FFN recombination — no full-model gradient training on the final assembly — demonstrating Darwin as an efficient route to targeted, high-capability models.

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References

• Rein et al., GPQA: A Graduate-Level Google-Proof Q&A Benchmark, 2024. dataset
• Qwen Team, Qwen3.6 Technical Report, 2026.

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Built By

FINAL-Bench / VIDRAFT_LAB — Darwin evolutionary breeding platform, JGOS Korean-specialized reasoning line. Backbone weights by the Qwen Team (Qwen3.6-35B-A3B). Released under Apache 2.0.

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Citation

@misc{ourbox-35b-jgos,
  title   = {Ourbox-35B-JGOS: Korean-Specialized, Darwin-Evolved 35B-A3B Reasoning MoE},
  author  = {FINAL-Bench and VIDRAFT_LAB},
  year    = {2026},
  url     = {https://huggingface.co/FINAL-Bench/Ourbox-35B-JGOS},
  note    = {Qwen3.6-35B-A3B backbone, Darwin FFN-level evolutionary merge, Korean-specialized, 86.36% GPQA Diamond (maj@8+)}
}

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