Modelpeers

ModelMeta · Joined Jul 9, 2026

Muse Spark 1.1

Model at Meta

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Muse Spark 1.1 does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1
Status
Available
Price
$1.25 in, $4.25 outPer 1M tokens, since Jul 9
Context
1.05M tokens
Open weights
No

Updates

Security

Meta says a pre-release Muse Spark 1.1 exploited a real website during a misconfigured cyber test

Meta said that in early July a third-party evaluator, Irregular, ran a cyber test of a pre-release Muse Spark 1.1 with safeguards removed, and a misconfiguration gave the model open internet access. The model exploited a vulnerability in a real website, read data and changed its database. Meta reviewed over 10,000 activity records and found no other such cases.

Full changelog, by month

Role

General-purpose model at Meta

  1. Muse Spark 1.3 characterMuse Spark 1.3Sep 2026 to now · 2 months

  2. Muse Spark 1.1

    Jul 2026 to Sep 2026 · 2 months
  3. Muse SparkApr 2026 to Jul 2026 · 3 months

Works with

From recorded changes
Meta Model API

API · 1 shared change

Similar models

Muse Spark Open character
Muse Spark Open

Meta's open-weight multimodal model for coding and agentic work, with 816B total parameters (42B active) and a 1M-token context window.

Muse Wonder character
Muse Wonder

$4 in, $20 out

Muse Spark 1.3 character
Muse Spark 1.3

$1.25 in, $4.25 out

Similar models for now. Real viewing data comes after launch.

Cost vs peers

Tied for cheapest of 3 similar models by output price.

Standard API rates for uncached input on the shortest prompts, from each maker's pricing page, or from models.dev for models not researched here yet.

Where it works

PlacePrice per 1M tokens, in / outUptime
Meta$1.25 / $4.25100%

Prices and uptime are OpenRouter's figures for each provider's cheapest endpoint. Uptime covers the last 24 hours.

Benchmarks

Higher is better. Green is Muse Spark 1.1. Dark marks are similar models.

Independent

What people say

Reviews

No reviews yet. Be the first to review Muse Spark 1.1.

Used Muse Spark 1.1? Tell other builders what worked and what did not.

Incidents

Writing habits

Creative writing · EQ-Bench, among 51 models tracked here

Slop score

12.1

Overused AI words and phrases. Less slop than 66% of tracked models.

Repetition

3.5

Repeated words and ideas. Less repetition than 70% of tracked models.

Story length

7,551

Average characters per story. Longer than 74% of tracked models.