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@ Don't ₿elieve the Hype 🦊
2025-04-05 20:20:28
Llama 4 is out. 👀
Llama 4 Maverick (402B) and Scout (109B) - natively multimodal, multilingual and scaled to 10 MILLION context! BEATS DeepSeek v3🔥
Llama 4 Maverick:
> 17B active parameters, 128 experts, 400B total parameters > Beats GPT-4o & Gemini 2.0 Flash, competitive with DeepSeek v3 at half the active parameters > 1417 ELO on LMArena (chat performance). > Optimized for image understanding, reasoning, and multilingual tasks
Llama 4 Scout:
> 17B active parameters, 16 experts, 109B total parameters
> Best-in-class multimodal model for its size, fits on a single H100 GPU (with Int4 quantization)
> 10M token context window
> Outperforms Gemma 3, Gemini 2.0 Flash-Lite, Mistral 3.1 on benchmarks
Architecture & Innovations
> Mixture-of-Experts (MoE):
First natively multimodal Llama models with MoE
> Llama 4 Maverick: 128 experts, shared expert + routed experts for better efficiency.
Native Multimodality & Early Fusion:
> Jointly pre-trained on text, images, video (30T+ tokens, 2x Llama 3)
> MetaCLIP-based vision encoder, optimized for LLM integration
> Supports multi-image inputs (up to 8 tested, 48 pre-trained)
Long Context & iRoPE Architecture:
> 10M token support (Llama 4 Scout)
> Interleaved attention layers (no positional embeddings)
> Temperature-scaled attention for better length generalization
Training Efficiency:
> FP8 precision (390 TFLOPs/GPU on 32K GPUs for Behemoth)
> MetaP technique: Auto-tuning hyperparameters (learning rates, initialization)
Revamped Pipeline:
> Lightweight Supervised Fine-Tuning (SFT) → Online RL → Lightweight DPO
> Hard-prompt filtering (50%+ easy data removed) for better reasoning/coding
> Continuous Online RL: Adaptive filtering for medium/hard prompts