Quasar Foundation Model

Quasar Foundation Models (RoPE Base)

Quasar Foundation Models are SILX AI’s core models designed for long-context reasoning, agentic systems, and persistent memory-based intelligence.

This release is NOT a state-of-the-art final model.
It is a base pretraining model designed specifically for distributed knowledge distillation on Bittensor (SN24 Quasar subnet).

The goal is to create a shared architecture where miners continuously distill knowledge from frontier models (e.g., Qwen, GLM) into Quasar.

⚠️ Important Note

This model is:

A base model
Pretrained for only a few billion tokens
Designed for distillation and scaling, not benchmarking

Performance will improve through iterative subnet training + distillation cycles.

Model Overview

Model Name: Quasar 3B (RoPE Base)
Organization: SILX AI
Architecture: Quasar-RoPE Hybrid Transformer
Total Parameters: 3B
Active Parameters: ~1B (Mixture-of-Experts)
Training Stage: Stage 1 (Base Pretraining)
Sequence Length: 16K tokens (RoPE phase)

Training Strategy

Quasar follows a multi-stage training pipeline:

Stage 1 — RoPE Pretraining

Train using Rotary Positional Embeddings (RoPE)
Context length: 16K tokens
Objective: stabilize training and build core reasoning

Stage 2 — Distillation (SN24)

Distributed training on Bittensor subnet (SN24)
Miners distill knowledge from:
- Qwen
- GLM
Target: transfer reasoning + capabilities into Quasar

Stage 3 — DroPE Long-Context Training

Remove positional embeddings entirely (DroPE phase)
Transition to position-free reasoning
Train on ultra-long context (up to 5M tokens)

This staged approach allows:

Stable early training
Efficient knowledge transfer
Extreme context scaling without positional bottlenecks

Quasar-RoPE Hybrid Architecture

Quasar is a high-throughput hybrid transformer designed for trillion-token scale training.

It combines:

Looped computation
Persistent latent memory
Hybrid attention mechanisms
Stable Mixture-of-Experts routing

1. Looped Transformer Logic

Instead of increasing depth traditionally, Quasar uses looped execution:

A fixed set of layers is reused multiple times (num_loops)
This multiplies effective depth without increasing VRAM

Key Mechanism:

Anchor P (Input Injection):
- Embedding output is stored as P
- Injected into the hidden state at every loop
Gradient Stabilization:
- Injection gradients scaled by 1 / num_loops
- Prevents instability during recirculation

2. Hybrid Layer Composition

Each loop contains a mix of:

Quasar Layers

Use Latent Memory Module
Handle long-range dependencies
Read/write persistent state

GLA Layers (Gated Linear Attention)

Fast, RNN-like recurrence
Efficient local sequence modeling

3. Persistent Latent Memory

A defining component of Quasar:

Memory Slots:
- Fixed parameter banks (e.g., 128–256 slots)
Segment Compression:
- Tokens grouped into segments (default: 64 tokens)
- Reduced noise during updates
Saliency Gating:
- Learns which information is important
- Writes only high-value signals to memory

4. SMEBU (Stability-Maximized Expert Balancing Unit)

Custom Mixture-of-Experts system:

Global Bias Buffers
- Stored outside optimizer
- Prevent routing collapse
Zero-Loop Updates
- Expert balancing done in vectorized pass
- No recursive instability
Sparse Activation
- ~1B active parameters per forward pass

5. Technical Specifications

Normalization: RMSNorm (Pre-Norm)
Positional Encoding: RoPE (theta = 1,000,000)
Initialization: Depth-scaled 1/sqrt(2L)
Architecture Type: Hybrid Transformer + Memory + MoE

Architecture Overview

Core Data Flow

Token IDs
  ↓
Embedding Layer
  ↓
Anchor P Snapshot
  ↓
┌──────────────────────────────────────────────┐
│ Loop (i < num_loops)                         │
│                                              │
│   Quasar Block                               │
│        ↓                                     │
│   GLA Block                                  │
│        ↓                                     │
│   SMEBU MoE                                  │
│        ↓                                     │
│   Inject Anchor P (Residual Conditioning)    │
└──────────────────────────────────────────────┘
  ↓
Next Loop Iteration (state updated)

Final Loop Output
  ↓
RMSNorm
  ↓
LM Head
  ↓
Logits

Latent Memory Update Path

Hidden States
  ↓
Layer Normalization (RMSNorm)
  ↓
Segment Compressor
  ↓
Segment Representation (Z)
  ↓
  ├──────────────→ Saliency Gate (importance scoring)
  │                        ↓
  │                     Write Signal
  │                        ↓
  └──────────────→ Memory Write Operation
                           ↓
              Persistent Memory Bank (M)
                           ↓
                  Updated Memory (M')
                           ↓
                  Memory Read Module
                           ↓
              Memory-Augmented Hidden State
                           ↓
                         Output

SMEBU MoE Stability Flow

Router Network
  ↓
Token Routing Scores
  ↓
  * Global Bias Buffer (non-trainable stability path)
  ↓
Top-K Expert Selection
  ↓
Selected Experts
  ↓
Expert Output Aggregation
  ↓
Final MoE Output
  ↓
Post-Loop Bias Update (vectorized, stabilized)

Intended Use

This model is designed as a foundation base model for the Quasar ecosystem and is primarily intended for:

Bittensor SN24 miners participating in distributed training and knowledge distillation
Distillation pipelines transferring capabilities from frontier models (e.g., Qwen, GLM)
Research on long-context architectures, especially beyond traditional positional encoding limits
Agentic system development, where persistent memory and long-horizon reasoning are required

Next Steps

Training on SN24 in the coming days
Miners distill knowledge into this model
Then we go for Run 2 — DroPE training at 5M tokens

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Safetensors

Model size

3B params

Tensor type

BF16