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Muse Spark Open

by Meta

Muse Spark Open is a coding-optimized open-weight model.

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Our verdict

Not reviewed yet

We have not reviewed Muse Spark Open yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About Muse Spark Open

Muse Spark Open is a coding-optimized open-weight model.

Notes

Muse Spark Open is listed in the EDNA Models directory from the OpenRouter catalogue.

Key facts

What we have checked

Input price
$1.25 per million tokens
Checked OpenRouter models API
Output price
$4.25 per million tokens
Checked OpenRouter models API
Price on baseten
$0.150 per million cached input tokens
Checked OpenRouter models API
Price on baseten
$1.25 per million input tokens
Checked OpenRouter models API
Price on baseten
$4.25 per million output tokens
Checked OpenRouter models API
Price on fireworks
$0.150 per million cached input tokens
Checked OpenRouter models API
Price on fireworks
$1.25 per million input tokens
Checked OpenRouter models API
Price on fireworks
$4.25 per million output tokens
Checked OpenRouter models API
Price on makora
$0.150 per million cached input tokens
Checked OpenRouter models API
Gpqa diamond
88.6% (for 15 Oct 2026)
Checked Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private
69.8% (for 15 Oct 2026)
Checked Epoch AI (CC BY 4.0)
Simpleqa verified
56.6% (for 15 Oct 2026)
Checked Epoch AI (CC BY 4.0)

Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.

API access

How to call it

Call via OpenRouter with model id `meta/muse-spark-open`.

  • openrouter · meta/muse-spark-open · Docs

OpenRouter id: meta/muse-spark-open

Price

What Muse Spark Open costs, over time

Input price

$1.25 to $1.25

US dollars per million input tokens. 16 Oct 2026 to 10 Nov 2026, 19 days.

Source: OpenRouter models API. Checked .

Output price

$4.25 to $4.25

US dollars per million output tokens. 16 Oct 2026 to 10 Nov 2026, 19 days.

Source: OpenRouter models API. Checked .

Prices by host

HostPriceOver timeChecked
basetenCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
basetenInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
basetenOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
fireworksCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
fireworksInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
fireworksOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
makoraCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
makoraInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
makoraOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
modalCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
modalInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
modalOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
nebiusCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
nebiusInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
nebiusOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API
togetherCached input$0.150 per million cached input tokensSince 24 Oct 2026No change recordedOpenRouter models API
togetherInput$1.25 per million input tokensSince 24 Oct 2026No change recordedOpenRouter models API
togetherOutput$4.25 per million output tokensSince 24 Oct 2026No change recordedOpenRouter models API

Usage

How much Muse Spark Open is used

Tokens served a day

3.4B to 6.2B

tokens a day on OpenRouter. 15 Oct 2026 to 10 Nov 2026, 27 readings.

Source: OpenRouter model activity (748 of 748 series). Checked .

Scores

How Muse Spark Open scores

Each score comes from the named source and shows when we last confirmed it. A flag means the score needs care.

ScoreValueSourceChecked
Artificial Analysis Intelligence Index24.9indexAs of 10 Nov 2026Artificial Analysis via OpenRouter
LMArena web development rating (Elo)1,526EloAs of 10 Nov 2026LMArena (CC-BY-4.0), published 2026-11-09
Design Arena rating (Elo)1,311EloAs of 10 Nov 2026Design Arena via OpenRouter
Apex agents (best-across-versions)33.4percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Frontiermath tier 4 v2 private (best-across-versions)31.7percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Frontiermath tiers 1 3 v2 private (best-across-versions)69.8percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Gpqa diamond (best-across-versions)88.6percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Otis mock aime 2024 2025 (best-across-versions)Saturated98.1percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Simpleqa verified (best-across-versions)56.6percentAs of 15 Oct 2026Epoch AI (CC BY 4.0)
Saturated
Top models score close to the maximum, so this test no longer separates them.

Sources

Where this comes from

A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.

Changelog

What changed

No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.

USAGE / OPENROUTER

How much Muse Spark Open is used

Tokens processed through OpenRouter each day. It shows what developers actually run, not every company's private traffic.

Tokens, last 7 days
123B ▲107%
Requests, last 7 days
2.6M
Tool calls, last 7 days
1.5M
Intelligence score
24.9
Average cost per request
$1.62
Price per million tokens
$1.25 in · $4.25 out
025B50B15 Oct: 3.4B tokens, 109K requests16 Oct: 20.5B tokens, 484K requests17 Oct: 40.2B tokens, 494K requests18 Oct: 5.6B tokens, 115K requests19 Oct: 14.2B tokens, 239K requests20 Oct: 16.2B tokens, 295K requests21 Oct: 11B tokens, 340K requests22 Oct: 8.7B tokens, 295K requests23 Oct: 26.6B tokens, 359K requests24 Oct: 6.1B tokens, 107K requests25 Oct: 5.5B tokens, 110K requests26 Oct: 3.3B tokens, 96.5K requests27 Oct: 6.7B tokens, 154K requests28 Oct: 4.7B tokens, 188K requests29 Oct: 5.6B tokens, 232K requests30 Oct: 7.6B tokens, 228K requests31 Oct: 3.3B tokens, 171K requests1 Nov: 3.1B tokens, 122K requests2 Nov: 10.5B tokens, 233K requests3 Nov: 24.3B tokens, 659K requests4 Nov: 15.9B tokens, 418K requests5 Nov: 25.3B tokens, 688K requests6 Nov: 29B tokens, 594K requests7 Nov: 20.8B tokens, 308K requests8 Nov: 18.2B tokens, 268K requests9 Nov: 7.2B tokens, 151K requests10 Nov: 6.2B tokens, 215K requests15 Oct29 Oct10 NovSee where it ranks on the leaderboard →

MODEL FIELD GUIDE / SOURCE EVIDENCE

What you can do with Muse Spark Open.

Listed specifications; no EDNA task evaluation has been run. Sources checked 2026-11-07. Hosting routes and app features can differ.

DeveloperMeta
Exact model identifiermeta/muse-spark-open
Inputtext, image, video, file, audio
Outputtext
Tool calling
Listed support
Structured output
Listed support
Reasoning controls
Listed support
Availability
available
Price basis
token
Licence verification
muse-model-license, open weights (access request)
Context length
1M tokens
Knowledge cutoff
Not established
Developer release date
Not established
First seen in the catalogue
15 Oct 2026
Listed retirement date
Not established
Inspect the sources and their scope
catalogue source ↗

meta/muse-spark-open: listed route capabilities, availability and prices; provider endpoints can differ.

Checked 2026-11-07
openrouter.ai ↗

Source for reasoning controls, first seen, tool calling, context length, input, output, structured output.

Checked 2026-11-07
Licence source ↗

Licence declared in the meta-models/Muse-Spark-Open-816B-A42B model repository on Hugging Face, which holds the weights files behind an access request. Read the licence terms before use.

Checked 2026-11-07
How to evaluate a model for your work →

FROM SPECIFICATIONS TO YOUR WORK

Is this the right model for your job?

Start with a realistic sample. These workflows match the model’s listed capabilities, not a verified result on your task.

Extract document dataWorkflow & starter prompt ↗Run a reliable agentWorkflow & starter prompt ↗

What would it cost?

Pick a common job and how many times a month you run it. Token sizes are our assumption for a typical run, shown under the result.

Working out the cost...

Token prices only. Per-request, image, tool, storage and subscription fees are not included. One token is about three quarters of an English word. Real counts vary by model and language. How tokens are counted ↗

Check the source

Price date: 10 Nov 2026, from OpenRouter models API. Prices are USD API token rates. Your app subscription, uploads, browsing and tools are separate.

Model source & availability ↗

Understand the evidence

Listed capabilities and third-party benchmark scores do not establish Enterprise DNA task-test results. Validate accuracy and total cost on your own sample.

Intelligence Index: 24.9 (2026-11-09) ↗Vals Index: 48.567 (2026-11-09) ↗Design Arena: 1315 (2026-11-09) ↗
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