Muse Spark 1.3
META Developer Architecture Profile
Intelligence (ELO)1459Chatbot Arena Verified
Max Context Limit1,048,576Max Out: 943,718 tokens
Prompt Caching88% OFF$0.15 / 1M cached
Standard API / 1M$5.50🧠 Deep Reasoner
Model Capabilities & Contract SLAs
- Reasoning
- Coding & Logic
- Fictional
- 🧠 Extended Test-Time Reasoning
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through...
Granular Pricing Matrix
Input Tokens (Standard Prompt)$1.25 / 1M
⚡ Cached Input (Prompt Cache Read)88% OFF$0.15 / 1M
Output Tokens (Completion)$4.25 / 1M
Pricing data via OpenRouter. Sync: 10/2/2026
Evaluate Competitors
VS Engine MatchupMuse Spark 1.3 vs OpenAI: GPT-6 Sol (batch)VS Engine MatchupMuse Spark 1.3 vs Anthropic: Claude Sonnet 4.6 (batch)VS Engine MatchupMuse Spark 1.3 vs Anthropic: Claude Sonnet 4.5 (batch)VS Engine MatchupMuse Spark 1.3 vs Xiaomi: MiMo-V2.6-Pro-UltraSpeedVS Engine MatchupMuse Spark 1.3 vs OpenAI: GPT Sol LatestVS Engine MatchupMuse Spark 1.3 vs Meta: Muse Spark 1.2