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Purely Rotational Foundation Models & Geometric Optimization

MatterWave AI researches and builds Geometric Rotation Transformers (GRT) β€” a foundation architecture that replaces dense linear weight matrices (nn.Linear) in attention (Q, K, V, O) and feed-forward (expand, contract) blocks with cascades of content-modulated 2Γ—2 Givens rotations on SO(D) interleaved with butterfly permutations.

Build and Scale with Geometric Rotation Transformers

Because every transform in the GRT residual path is an orthogonal rotation cascade, hidden-state norms are preserved by construction rather than by post-hoc rescaling. GRT checkpoints execute deterministically with bit-for-bit greedy generation parity across PyTorch (CUDA, ROCm, Intel XPU), vLLM, and llama.cpp (CPU AVX2, Vulkan, and ROCm HIP).

Starting from our pretrained GRT-10M and GRT-20M NeurIPS submission checkpoints (trained with first-generation PairAdam) and our 24-hour Qwen 3 distilled GRT-30M base checkpoint, replacing the optimizer with HuygensSymplecticAdam and training across a multi-round curriculum delivers substantial improvements across the 10-task SLM-Bench evaluation suite (13,144 held-out multiple-choice examples across BoolQ, ARC-Easy, ARC-Challenge, OpenBookQA, PIQA, WinoGrande, HellaSwag, QNLI, and CommonsenseQA, plus 500 held-out GSM8K mathematical reasoning problems):

  • GRT-10M-Curriculum (8.7M total / 2.2M backbone) β€” Lifts 9-task multiple-choice accuracy from 37.61% (PairAdam NeurIPS Baseline) to 41.71% (Single-Pass) to 45.74% (Multi-Round Curriculum, +8.13%), while GSM8K 4-way verification reaches 96.60% (perplexity reduced 5.77Γ— from 145.85 to 25.28).
  • GRT-20M-Curriculum (16.7M total / 10.3M backbone) β€” Lifts 9-task multiple-choice accuracy from 38.63% (PairAdam NeurIPS Baseline) to 45.03% (Single-Pass) to 48.17% (Multi-Round Curriculum, +9.54%), while GSM8K 4-way verification reaches 98.20% (perplexity reduced 7.86Γ— from 60.12 to 7.65).
  • GRT-30M-Curriculum (29.3M total / 9.74M backbone) β€” Lifts 9-task multiple-choice accuracy on the 24-hour Qwen 3 distilled base from 39.61% (PairAdam Baseline) to 43.86% (Single-Pass) to 48.07% (Multi-Round Curriculum, +8.46%), while GSM8K 4-way verification reaches 99.20% (perplexity reduced 3.68Γ— from 27.99 to 7.60).

System-1 Cognitive Telemetry & Multimodal Specialists

Beyond base causal language modeling, the GRT-30M backbone powers specialized reasoning routers, retrieval encoders, and unified multimodal checkpoints:

  • Open-S1-GRT-30M β€” 5-head System-1 cognitive telemetry router (action routing, escalation, loop guard, specification support, and verification gating) reaching 95.83% 5-family macro accuracy (92.00% MC_SHUFFLE_V2 transfer with HuygensSymplecticAdam; ECE = 0.0095 with SymplecticAdam).
  • GRT Architecture Whitepaper (PDF) β€” Full mathematical formulation, kernel design, and multi-backend verification report.

Explore the MatterWave AI Model Suite

Browse our open-weights repositories by category: