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Collectively AI says Meta’s Muse Spark Open is out there on its serverless platform with 1M-token context and pricing for enter, output and cached tokens.
Collectively AI stated Meta’s Muse Spark Open is reside on its platform on October 15, 2026, making the open-weight mannequin out there by means of serverless and devoted infrastructure on the day of launch. The corporate described itself as a day-zero launch accomplice and stated early-access clients had already examined the mannequin earlier than launch.
What Collectively AI stated in regards to the mannequin
In its announcement, Collectively AI stated Muse Spark Open is designed for long-running agentic coding workflows that preserve total codebases in context, in addition to pc use, net automation and multimodal understanding of paperwork, photos, audio and video. The corporate stated the mannequin has a 1M-token context window, helps long-horizon autonomy, and might plan, act, observe and self-correct over prolonged duties. Collectively AI additionally stated the mannequin features a commentary mode that states what it’s doing and why earlier than performing.
Meta’s personal launch, printed the identical day, identifies Muse Spark Open as an open-weight mannequin with 816 billion complete parameters, 42 billion energetic parameters per token and a 1,048,576-token context window. Meta says it accepts textual content, picture, audio and video inputs and is aimed toward code technology, evaluate, advanced software program engineering, multi-step reasoning and long-running agentic duties. These functionality claims come from Meta’s documentation and are vendor-described, not independently verified efficiency outcomes.
Early entry and launch companions
Collectively AI cited early-access suggestions from Manufacturing facility and Ollama. Manufacturing facility’s Zimu Li stated the mannequin “constantly chosen the fitting instrument and stored its responses compact,” whereas Ollama’s Dong Chen stated it carried out effectively on instrument calling and lengthy context, together with multi-step and parallel calls with clear structured outputs. Each corporations stated early entry by means of Collectively AI allow them to consider the mannequin forward of launch and provide it to customers from day zero.
Pricing and deployment particulars
Collectively AI stated Muse Spark Open is out there through its Collectively API and playground. The corporate listed pricing at $1.25 per 1 million enter tokens, $4.25 per 1 million output tokens and $0.15 per 1 million cached enter tokens. Meta’s broader launch notes additionally point out deployment choices embody self-hosting and hosted APIs, and that inference assist extends throughout a variety of companions together with Collectively AI.
The importance of the launch is that considered one of Meta’s latest open-weight fashions is now out there by means of a third-party inference supplier on launch day, alongside Meta’s personal distribution channels. The proof supplied doesn’t embody utilization knowledge, buyer adoption figures or independently verified benchmark outcomes, so claims about aggressive efficiency stay these of the businesses concerned.
