The Index / Together AI / Muse Spark Open Muse Spark Open by Together AI · family muse · listed Oct 2026R T V W
Muse Spark Open is an 816B total / 42B active open-weight multimodal reasoning model from Meta for coding and long-horizon agentic work, with 1M-token context.
Current rates USD per 1M tokens Input $1.25
Output $4.25
Cache read $0.15
Cache write —
Against the market Input price vs. maker flagships ($/1M tokens) Claude Haiku 5.5 Claude Haiku 5.5: $0.10 per 1M tokens $0.10 DeepSeek V4 Flash Vision Exp DeepSeek V4 Flash Vision Exp: $0.15 per 1M tokens $0.15 Qwen3.8 Omni Flash Qwen3.8 Omni Flash: $0.15 per 1M tokens $0.15 GPT-6.1 Terra GPT-6.1 Terra: $1.00 per 1M tokens $1.00 Muse Spark Open Muse Spark Open: $1.25 per 1M tokens $1.25 Mistral Large 4 Mistral Large 4: $1.36 per 1M tokens $1.36 Gemini 4 Argon Gemini 4 Argon: $2.00 per 1M tokens $2.00 Grok 4.7 Grok 4.7: $2.00 per 1M tokens $2.00 Output price vs. maker flagships ($/1M tokens) Qwen3.8 Omni Flash Qwen3.8 Omni Flash: $0.47 per 1M tokens $0.47 Claude Haiku 5.5 Claude Haiku 5.5: $0.50 per 1M tokens $0.50 DeepSeek V4 Flash Vision Exp DeepSeek V4 Flash Vision Exp: $0.60 per 1M tokens $0.60 Mistral Large 4 Mistral Large 4: $4.18 per 1M tokens $4.18 Muse Spark Open Muse Spark Open: $4.25 per 1M tokens $4.25 GPT-6.1 Terra GPT-6.1 Terra: $5.00 per 1M tokens $5.00 Grok 4.7 Grok 4.7: $6.00 per 1M tokens $6.00 Gemini 4 Argon Gemini 4 Argon: $10.00 per 1M tokens $10.00 On the record
Model id meta-models/Muse-Spark-Open-816B-A42B
Context window 1.0M tokens
Max output 131K tokens
Input modalities text, image, video
Output modalities text
Reasoning yes
Tool calls yes
Open weights yes
Knowledge cutoff Jan 2026
Released 2026-10-15
Last updated 2026-10-15 Also listed at Modal $1.25 in · $4.25 out ← All Together AI listings