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Muse Spark 1.3

Ultra-Compact Edge Intelligence Transformer
Official Source & Paper
Meta AI logo Meta 📄 Open Weights (Apache 2.0) 🌍 United States (US) 🗓️ Effective Date: 10.09.2026

Ultra-lightweight embedded model optimized for low-power IoT microcontrollers, wearable hardware, and instant local autocompletion.

Model Size / Parameters 3.5B Dense Architecture: Ultra-Compact Edge Intelligence Transformer
Context Window (Input) 64k tokens Token Capacity
Max Output Tokens 8,192 tokens Single Generation Limit
Supported Modalities Text, Code Native Multimodal Ingestion
License & Access Open Weights (Apache 2.0) Open Weights vs. API
Release Date September 2026 Effective Date: 10.09.2026

Verified Benchmark Results

Standardized academic and industry evaluation benchmarks (Effective Date: 10.09.2026).

MMLU-Pro / 5-Shot General Intellect
79.4%
SWE-bench Verified Software Engineering
34.5%
MATH 500 / AIME Mathematical Reasoning
76.0%
GPQA Diamond Doctoral Science
48.5%
HumanEval / Python Algorithm Synthesis
78.2%

Pricing & Cost Efficiency

Official API token pricing and self-hosted licensing terms.

Input Pricing (Prompt)
Free / Self-Hosted
Per 1 million processed tokens
Output Pricing (Generation)
Free / Self-Hosted
Per 1 million generated tokens
Verified Datasheet: Source: Meta Research Documentation • Effective Date: 10.09.2026
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