MetaLlama 4Open SourceArena #149Apr 5, 2025

Meta: Llama 4 Scout

Llama 4 Scout 17B Instruct (16E) is a mixture-of-experts (MoE) language model developed by Meta, activating 17 billion parameters out of a total of 109B. It supports native multimodal input (text and image) and multilingual output (text and code) across 12 supported languages. Designed for assistant-style interaction and visual reasoning, Scout uses 16 experts per forward pass and features a context length of 10 million tokens, with a training corpus of ~40 trillion tokens. Built for high efficiency and local or commercial deployment, Llama 4 Scout incorporates early fusion for seamless modality integration. It is instruction-tuned for use in multilingual chat, captioning, and image understanding tasks. Released under the Llama 4 Community License, it was last trained on data up to August 2024 and launched publicly on April 5, 2025.

Context Window
328K
tokens
Max Output
16K
tokens
Released
Apr 5, 2025
Arena Rank
#149
of 305 models
Output Speed
198
tokens/sec
Time to First Token
350ms
TTFT

Capabilities

👁Vision
🧠Reasoning
🔧Tool Calling
Prompt Caching
🖥Computer Use
🎨Image Generation

Supported Parameters

Frequency Penalty
Reduce repetition
Max Tokens
Output length limit
min_p
Presence Penalty
Encourage new topics
Repetition Penalty
Penalize repeated tokens
Response Format
JSON mode / structured output
Seed
Deterministic outputs
Stop Sequences
Custom stop tokens
structured_outputs
Temperature
Controls randomness
Tool Choice
Control tool usage
Tool Calling
Function calling support
Top K
Top-K sampling
Top P
Nucleus sampling

Pricing Comparison

RouterInput / 1MOutput / 1MCached Input / 1M
OpenRouter$0.08$0.30
Vercel AI$0.08$0.30
Martian$0.08$0.30

Benchmarks

Artificial Analysis
Intelligence IndexArtificial Analysis
52/100
Coding IndexArtificial Analysis
46/100
Math IndexArtificial Analysis
55/100
MMLU-PROArtificial Analysis
0.698/1
GPQA DiamondArtificial Analysis
0.498/1
MATH-500Artificial Analysis
0.745/1
AIME 2024Artificial Analysis
0.12/1
LiveCodeBenchArtificial Analysis
0.405/1

Model IDs

OpenRoutermeta-llama/llama-4-scout

Tags

visiontool-calling
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