Meta releases open-weight Muse Spark Open, live on OpenRouter

Meta 开放权重模型 Muse Spark Open 上架 OpenRouter

Meta released the open-weight Muse Spark Open, now available on OpenRouter and positioned as the strongest US open-weight model for coding and agent work. It has 816B total parameters, 42B active, a 1M token context window and native multimodal input covering images, video, audio and PDF. OpenRouter prices it at $1.25 per million input tokens and $4.25 per million output tokens.

Why it matters: OpenRouter gives teams a pay-per-token entry point to Meta's open-weight Muse Spark Open for coding and agent work.