Muse Spark Open

Muse Spark Open is Meta's open-weights model in its new Muse line, released 2026-10-15, listed on OpenRouter at $1.25 per million input tokens and $4.25 output, with a 1,048,576-token context and text, image, video, PDF and audio input. The same price applies to the closed Muse Spark 1.3. Meta's older Llama line and this newer model are both covered in our Llama page. The licence in our data is open-weights without a standard name, and our Llama page notes gated licences, so read the terms. We would suggest it to teams that want a multimodal open model from Meta and can accept its licence. The limit is that the family has many releases at different prices, so pin the exact name before comparing. Prices and specifications come from the OpenRouter listing we checked on 31 October 2026, and we have not tested the model ourselves.