Muse Spark 1.3 Contributor
Summary
Muse Spark 1.3 Contributor is a language model from Meta, released on 2 Sept 2026. It accepts text, images, video and files and generates text, with a 1M-token context window and up to 944K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.10 per million input tokens and $0.20 per million output tokens (OpenRouter), across 1 provider we track.
Muse Spark 1.3 Contributor is the cost-efficient contributor tier of Meta’s multimodal reasoning model for experimentation, learning, and early-stage agentic, multi-agent, and coding workflows. It is designed to track information...
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Meta |
|---|---|
| Release date | 2 Sept 2026 [OpenRouter] |
| Status | Generally available |
| Context window | 1M (1,048,576 tokens) [OpenRouter] |
| Max output | 944K tokens [OpenRouter] |
| Input | Text, images, video and files [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | Yes [OpenRouter] |
| Tool calling | Yes [OpenRouter] |
| Structured output | Yes [OpenRouter] |
Muse Spark 1.3 Contributor API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter meta/muse-spark-1.3-contributor | $0.10 | $0.20 | $0.002 | 1M | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of Muse Spark 1.3 Contributor?
Muse Spark 1.3 Contributor has a context window of 1,048,576 tokens (1M) and can generate up to 943,718 tokens in a single response, according to OpenRouter.
How much does the Muse Spark 1.3 Contributor API cost?
Muse Spark 1.3 Contributor is listed from $0.10 per million input tokens and $0.20 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
When was Muse Spark 1.3 Contributor released?
Meta released Muse Spark 1.3 Contributor on 2 Sept 2026, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.