Muse Spark 1.3
Muse Spark 1.3 is Meta's current multimodal reasoning model for coding, computer use, scientific reasoning, and long agentic workflows. The xhigh variant is available through Meta's first-party API and Muse Code, while the max variant remains in limited partner preview.
Muse Spark 1.3 raises Meta's agentic and scientific performance while keeping the xhigh API price at $1.25 input, $0.15 cached input, and $4.25 output per million tokens. Its strong independent value result makes it relevant to frontier routing, but incomplete first-party public catalog detail and limited max access still prevent a complete structured model record.
Meta's developer catalog confirms Muse Spark 1.3 as the current model family. Artificial Analysis documents the dated xhigh and limited max configurations, 1M context, text/image/video input, API and Muse Code availability, current xhigh pricing, and independent results. Because Meta has not exposed a complete stable public model-detail contract in the captured sources, GetLLMs keeps the generic family route entity-only.
- Evaluate a Meta model for coding and agentic tool use.
- Build multimodal workflows that combine screenshots, text, and actions.
- Test computer-use and MCP-style tool orchestration in a hosted preview.
- Compare long-context agent behavior with other frontier model APIs.
Independent September 2 testing reports that Muse Spark 1.3 improves most strongly on agentic knowledge work and scientific reasoning over Muse Spark 1.2. The available xhigh configuration scored 61 in that harness, while the limited max preview scored 62; these are dated configuration-specific results rather than a permanent universal rank.
Muse Spark 1.3 keeps a one-million-token context and accepts text, image, and video input. The family remains centered on long agentic work and tool use, which makes the surrounding harness, permissions, traces, and evaluation plan as important as the model itself.
The xhigh variant is reported available through Meta's first-party API and Muse Code at $1.25 input, $0.15 cached input, and $4.25 output per million tokens, while max is limited preview and has no public price. Before production use, verify the exact current model ID, regional access, limits, privacy terms, and tool behavior in the active Meta account.
Muse Spark 1.3 FAQ
Common questions about Muse Spark 1.3.
Is Muse Spark 1.3 open source or downloadable?+
Do not assume so. The current evidence describes a hosted first-party API and Muse Code surface. A downloadable or open-weight claim needs a corresponding Meta model card, repository, and license.
Is Muse Spark 1.3 generally available?+
The xhigh configuration is available through Meta's first-party API and Muse Code, while the max configuration remains in limited partner preview. Verify account and regional access before planning production traffic.
Should Muse Spark 1.3 be added to a production model router?+
Treat xhigh as a value candidate to test, not an automatic default. Verify the exact model ID, access, rate limits, tool behavior, privacy terms, and task-specific results. Do not plan around max until the limited-preview boundary changes.