# Muse Spark 1.1

> Muse Spark 1.1 is a proprietary language model from Meta, released on 8 Apr 2026. It accepts text, images, PDFs and video and generates text, with a 1M-token context window and up to 131K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $1.25 per million input tokens and $4.25 per million output tokens (OpenRouter), across 2 providers we track.

Source page: https://www.aimodel.directory/models/muse-spark-1-1
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Meta
- **Release date:** 8 Apr 2026 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Weights:** Proprietary (API only) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Context window:** 1M (1,048,576 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Max output:** 131K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Input:** Text, images, PDFs and video (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Reasoning mode:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)
- **Structured output:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/meta/models/muse-spark-1.1.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| OpenRouter | $1.25 | $4.25 | $0.15 | 1M |
| Vercel AI Gateway | $1.25 | $4.25 | $0.15 | 1M |

## FAQ

### What is the context window of Muse Spark 1.1?

Muse Spark 1.1 has a context window of 1,048,576 tokens (1M) and can generate up to 131,072 tokens in a single response, according to models.dev.

### How much does the Muse Spark 1.1 API cost?

Muse Spark 1.1 is listed from $1.25 per million input tokens and $4.25 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.

### Is Muse Spark 1.1 open source?

No. Muse Spark 1.1 is a proprietary model; Meta has not released its weights. It is available through APIs including OpenRouter, Vercel AI Gateway.

### When was Muse Spark 1.1 released?

Meta released Muse Spark 1.1 on 8 Apr 2026, according to models.dev.

### Which providers offer Muse Spark 1.1?

We track Muse Spark 1.1 on 2 providers: OpenRouter, Vercel AI Gateway.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Muse Spark 1.1", https://www.aimodel.directory/models/muse-spark-1-1