How much does Muse Spark cost?

We do not hold a list price for Muse Spark yet, so we cannot compare its cost. Check the maker's own price page.

Is Muse Spark open source?

We list Muse Spark as closed: it is used through its maker's apps or API and its weights are not published (Epoch AI lists its access as "API access").

How good is Muse Spark compared with other AI models?

On the Epoch Capabilities Index, Muse Spark scores 152.0 (likely range 149.8 to 154.5), which ranks 51 of 270 models we track. On Arena's human-vote text board it is ranked 14 of 166. Scores close together are a tie in practice.

How does Muse Spark compare with Grok 4.20?

Grok 4.20 scores higher on 1 of 3 shared quality measures, Muse Spark on 0. 2 measures are too close to call. See the full comparison for every measure.

How current are these numbers for Muse Spark?

The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

AI Rankings

Muse Spark: Score, Price and Context Window

Where Muse Spark from Meta ranks, what it costs and how much text it can read, in plain numbers with the sources.

Data updated 26 Oct 2026

Meta
Closed weights
Released Apr 2026

Its score range overlaps with Grok 4.20, the model just above it, so a small gap in rank is not a meaningful difference.

Best for

Questions about images: its Arena vision rating is in the top 10%.

These lines are worked out from the numbers on this page, not from hands-on testing.

Key facts

Overall score: 152.0; Rank 51 of 270. Likely range 149.8 to 154.5.
Human preference: chat: 1489; Rank 14 of 166. 14,147 votes.
Human preference: coding: 1529; Rank 19 of 166. 3,942 votes.
Human preference: images: 1294; Rank 6 of 85. 5,865 votes.
Weights: Closed; Used through the maker's apps or API (Epoch AI: API access).

We do not have a list price and a context window size for Muse Spark yet. It is shown as "Not measured" rather than guessed.

Try itMeta AI in our AI tools directoryMeta's AI assistant for everyday questions, conversation, writing, and image-based creativity in supported apps.

How Muse Spark stacks up

Each strip shows every model we track as faint bars. The dot is this model. Better is always to the right, even for price.

Muse Spark compared with all models we trackOverall capability: 152.0. Better than 81% of the other 269 models. Human preference: chat: 1489. Better than 92% of the other 165 models. Human preference: coding: 1529. Better than 89% of the other 165 models. Human preference: images: 1294. Better than 94% of the other 84 models.

Overall capability152.0
Better than 81% of the other 269 modelsTop 25%
Epoch Capabilities Index: one score that combines many tests.
Human preference: chat1489
Better than 92% of the other 165 modelsTop 10%
How often people pick its answers over another model's on Arena.
Human preference: coding1529
Better than 89% of the other 165 modelsTop 25%
How often people pick its answers to coding questions on Arena.
Human preference: images1294
Better than 94% of the other 84 modelsTop 10%
How often people pick its answers about pictures on Arena.

Compared with the other published models that have each measure. Data updated 26 Oct 2026.

Where Muse Spark ranks

Leaderboards it appears on, best placing first.

See all leaderboards

Test results

Each test checks one kind of skill. Place shows where it stands among the models that took that test.

Humanity's Last Exam
A large set of very hard, expert-written questions across many subjects, built to stay difficult for top AI models.
40.6%
Place 7 of 41
GPQA Diamond
Very hard multiple-choice science questions in biology, physics and chemistry, written by experts and designed so a quick web search does not give the answer.
89.8%
Place 44 of 183
OTIS Mock AIME
Maths competition problems in the style of the US AIME exam, from the 2024 and 2025 sets. Every answer is a whole number.
88.9%
Place 59 of 174

Similar models

Models from other makers with a similar overall score.

Learn more

Questions about Muse Spark

How much does Muse Spark cost?: We do not hold a list price for Muse Spark yet, so we cannot compare its cost. Check the maker's own price page.
Is Muse Spark open source?: We list Muse Spark as closed: it is used through its maker's apps or API and its weights are not published (Epoch AI lists its access as "API access").
How good is Muse Spark compared with other AI models?: On the Epoch Capabilities Index, Muse Spark scores 152.0 (likely range 149.8 to 154.5), which ranks 51 of 270 models we track. On Arena's human-vote text board it is ranked 14 of 166. Scores close together are a tie in practice.
How does Muse Spark compare with Grok 4.20?: Grok 4.20 scores higher on 1 of 3 shared quality measures, Muse Spark on 0. 2 measures are too close to call. See the full comparison for every measure.
How current are these numbers for Muse Spark?: The newest data on this page is dated 26 Oct 2026. Scores come from Epoch AI and Arena, prices from the open LiteLLM price list.

Where this data comes from

Epoch AI: Benchmark data: Epoch AI, 'Capabilities & benchmarking', epoch.ai/benchmarks (CC BY 4.0). We match models across sources, rank them and show them in charts. Scores are not changed. Epoch AI does not endorse this site.
Arena (formerly LMArena): Human-preference ratings: Arena (arena.ai) leaderboard dataset, CC BY 4.0. We keep the latest published ratings, match them to models from other sources and rank them. Ratings are not changed. Arena does not endorse this site.

Newest data on this page: 26 Oct 2026. Prices are list prices and change often, so confirm on the maker's site before you buy. Sponsors never change a score or an order. How we calculate this · Report a mistake