{"schema":"postcutoff/event@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/e/2026-07-09-meta-muse-spark-1-1-model-api/","md":"https://postcutoff.com/e/2026-07-09-meta-muse-spark-1-1-model-api/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"2026-07-09-meta-muse-spark-1-1-model-api","date":"2026-07-09","date_precision":"day","short_title":"Meta releases Muse Spark 1.1 and opens the Meta Model API public preview","deck":null,"takeaway":"On 2026-07-09 Meta released Muse Spark 1.1, a multimodal reasoning model tuned for agentic tasks (tool and computer use, coding), with a 1M-token context, and launched a public preview of the Meta Model API - Meta's first broadly available developer API for its frontier models.","category":"model-release","category_label":"Model releases","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":[{"n":1,"title":"Meta AI - Introducing Muse Spark 1.1","url":"https://ai.meta.com/blog/introducing-muse-spark-meta-model-api/","type":"official","group":"primary","domain":"ai.meta.com"},{"n":2,"title":"Meta AI - Introducing Muse Image and Muse Video","url":"https://ai.meta.com/blog/introducing-muse-image-muse-video-msl/","type":"official","group":"primary","domain":"ai.meta.com"},{"n":3,"title":"explainx.ai - Muse Spark 1.1 and Meta Model API","url":"https://www.explainx.ai/blog/muse-spark-1-1-meta-model-api-july-2026","type":"press","group":"press","domain":"explainx.ai"}],"official":2,"filed":"2026-09-29","updated":"2026-09-29","orgs":["Meta"],"title":"Meta releases Muse Spark 1.1 and opens the Meta Model API public preview","summary":"On 2026-07-09 Meta released Muse Spark 1.1, a multimodal reasoning model tuned for agentic tasks (tool and computer use, coding), with a 1M-token context, and launched a public preview of the Meta Model API - Meta's first broadly available developer API for its frontier models. Muse Image (agentic image generation) arrived two days earlier.","key_facts":["Muse Spark 1.1 released 2026-07-09","Context window: 1 million tokens; multimodal input (images, video, PDFs)","Major gains claimed in tool use, computer use, coding and multimodal understanding (no numeric scores in the post)","Meta Model API public preview at developer.meta.com; OpenAI-compatible package, parallel tool calling, structured output","Launch partners include Replit, Cline, Box and the OpenClaw Foundation","Also powers a 'Thinking' mode in the Meta AI app and meta.ai","Muse Image (agentic image generation with search, code tools and self-refinement) launched 2026-07-07"],"key_numbers":[],"tags":["meta","msl","muse","api","agents","multimodal","long-context"],"science":null,"body_md":"## What happened\n\nThree months after Muse Spark, MSL shipped **Muse Spark 1.1**, pitched as a multimodal reasoning model built for agentic\nwork, and opened the **Meta Model API** in public preview. The API is OpenAI-compatible and supports parallel tool\ncalling and structured output. Replit CEO Amjad Masad called it \"a complete agentic foundation\" with a million-token\ncontext and full multimodal support.\n\n## Why it matters\n\nMeta, historically a distributor of free Llama weights, now sells API access to its frontier model and competes\ndirectly with OpenAI, Anthropic and Google for developers building agents.","disputed":[],"related":[{"id":"2026-08-05-meta-muse-code-spark-1-2","url":"https://postcutoff.com/e/2026-08-05-meta-muse-code-spark-1-2/","date":"2026-08-05","date_precision":"day","short_title":"Meta launches Muse Code terminal coding agent powered by Muse Spark 1.2","deck":null,"takeaway":"Every frontier lab now ships its own terminal coding agent; Muse Code is Meta's entry into the most commercially valuable agent category of 2026.","category":"agents","category_label":"Agents","importance":3,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":6,"official":4,"filed":"2026-09-29","updated":"2026-09-30","orgs":["Meta"]},{"id":"2026-04-08-meta-muse-spark","url":"https://postcutoff.com/e/2026-04-08-meta-muse-spark/","date":"2026-04-08","date_precision":"day","short_title":"Meta Superintelligence Labs debuts Muse Spark, its first model","deck":null,"takeaway":"On 2026-04-08 Meta Superintelligence Labs (led by Alexandr Wang) released Muse Spark (code-named Avocado), the first model of the new Muse series and the result of a nine-month ground-up rebuild of Meta's AI stack.","category":"model-release","category_label":"Model releases","importance":4,"confidence":"high","status":{"key":"confirmed","labels":["Confirmed"]},"sources":7,"official":5,"filed":"2026-09-29","updated":"2026-10-29","orgs":["Meta"]}],"people":[],"posts":[],"videos":[],"models":[{"id":"muse-image","name":"Muse Image","url":"https://postcutoff.com/m/muse-image/"}],"changes":[{"date":"2026-09-29","type":"filed","text":"Created"}],"provenance":{"agents":[{"model":"Claude Opus 5.5","maker":"Anthropic","tool":"Claude Code"}],"filed":"2026-09-29","run":null,"sources_read":null,"updated":"2026-09-29","human_review":null,"version":{"date":"2026-10-04"}},"gaps":[{"model_id":"gpt-6-astra","name":"GPT-6 Astra","cutoff":"2026-04","days_after":70,"in_training_data":false},{"model_id":"claude-opus-5-5","name":"Claude Opus 5.5","cutoff":"2026-06","days_after":9,"in_training_data":false},{"model_id":"gemini-4-hydrogen","name":"Gemini 4 Hydrogen","cutoff":"2026-03","days_after":100,"in_training_data":false},{"model_id":"grok-4-7","name":"Grok 4.7","cutoff":"2026-05","days_after":39,"in_training_data":false}],"short_url":null}