Muse Spark

Benchmarks, price, context and versions

Direct answer: Muse Spark is a model from Meta. 89.8% on GPQA Diamond, per Epoch AI.

✓ Good for

technical reasoning on science topics (#47 of 198 on GPQA Diamond)

✕ Not the best for

Not enough data in the open sources this section uses to build this block.

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is

89.8%

highest score on this metric 96.4%

47º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

88.9%

highest score on this metric 100%

67º / 186 · Epoch AI, latest version we checked

Key specs

Lab: Meta
Origin: the US
Family: Muse Spark provisional data
Weights?: closed
License: no data
Input US$/1M?: no data
Output US$/1M: no data
Context?: no data
Parameters: no data
Input: no data
OpenRouter usage?: no data
Downloads (30 days)?: no data
Use cases provisional data: Text
Dates in sources: 2026, published, per Epoch AI

Version history

2026 Meta: Muse Spark Open OpenRouter, listed on OpenRouter
2026 Meta: Muse Spark 1.3 OpenRouter, listed on OpenRouter
2026 Meta: Muse Spark 1.3 Contributor OpenRouter, listed on OpenRouter
2026 Meta: Muse Spark 1.2 Contributor OpenRouter, listed on OpenRouter
2026 Meta: Muse Spark 1.2 OpenRouter, listed on OpenRouter
2026 Meta: Muse Spark 1.1 OpenRouter, listed on OpenRouter

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Muse Spark?

Muse Spark is a model from Meta, with closed weights, used for text.

How much does Muse Spark cost?

No data in open sources.

What is the context window of Muse Spark?

No data in open sources.

Is Muse Spark open source?

No. It is available through API only.

What is Muse Spark's GPQA Diamond score?

89.8% on GPQA Diamond, per Epoch AI.

Is Muse Spark good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Muse Spark?

It was made by Meta, a lab from the US.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Meta

See lab

Sources

Epoch AI, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.