AI Radar

Muse Spark 1.1

Available · Language, Multimodal, Reasoning

Muse Spark 1.1 is a multimodal reasoning model in Meta's Muse series that Meta says is built for agentic tasks. It succeeded the first Muse Spark in Meta AI and launched with the public preview of the Meta Model API, which lists it as muse-spark-1.1 with text, image, video, audio and PDF input and a 1,048,576-token context window. [1] [2]Introduction [3]Available Muse Spark models Primary source

Timeline of Muse Spark 1.1 →

Claims and evidence

  • Released Primary source[1] [2]cover page date
  • Status AvailableListed as an available model in the Model API docs on 2026-10-01. The API launched as a public preview with this model; the docs no longer carry a preview label, although the marketing page at dev.meta.ai/models/muse-spark-1-1 still says public preview for US developers. Primary source[3]Available Muse Spark models
  • Change · Availability First Muse model offered to developers through a public API: the public preview of the Meta Model API launched with it.Compared with Muse Spark Primary source[1]
  • Change · Tool use Adds trained computer use across applications and orchestration of parallel subagents, which Meta says makes complex projects faster than with Muse Spark.Compared with Muse Spark Primary source[1]Agents; Computer Use
  • Change · Context length Documented context window of 1 million tokens (1,048,576 in the API docs); Meta says the model compacts earlier work while keeping key steps.Compared with Muse Spark Primary source[1]Agents [3]Available Muse Spark models
  • Change · Other Meta reports coding gains on real-world tasks in large codebases compared with the first Muse Spark model.Compared with Muse Spark Primary source[1]
  • Input text, image, video, audioThe docs also list PDF input. Primary source[3]Available Muse Spark models
  • Output text Primary source[3]Available Muse Spark models
  • Feature Reasoning modeReasoning model with adjustable reasoning_effort from minimal to xhigh; reasoning cannot be disabled. Primary source[4]How it works
  • Feature Tool use Primary source[1]Agents [2]abstract
  • Feature Computer use Primary source[1]Computer Use
  • Context window 1,048,576 tokens tokensThe launch blog says a context window of 1 million tokens. Primary source[3]Available Muse Spark models [1]Agents
  • Parameters Not disclosedNot disclosed by Meta. No claim madeNo source
  • Access API, consumer appAPI access through the public preview of the Meta Model API launched with this model; in the Meta AI app and on meta.ai it was available in Thinking mode. Primary source[1]third paragraph; Availability

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