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Muse Spark

Current

1.3

shipped 2mo · 2 Sept 2026

Sold on computer use and long-horizon task completion.

Specification

Current
1.3
Availability
Listed; see source

Modalities: text, computer use, tool use

Muse Spark — 6-Axis Capability Radar

HEURISTIC ESTIMATE
Muse Spark87 IDX
Preset genre reference

These scores are rough estimates from category presets, catalog specs, and keywords in release notes. They are not measured benchmarks or test results. Catalog prices and context windows may refer to a different model variant.

REASONINGCODE / AGENTMULTIMODALTHROUGHPUTEFFICIENCYCONTEXT

Hover or tap an axis to inspect its estimate

Reasoning & Logic
90EVEN
Code & Tool Agency
97+5
Multimodal Fidelity
90+8
Speed & Throughput
76EVEN
Cost & Openness
72EVEN
Context & Horizon
98+12
RELEASE CADENCE EXPLORER

Shipping Cadence & Next Drop Forecast

PAST ESTIMATED INTERVAL

This is an uncalibrated estimate from limited catalog history. A ratio of 100% means one estimated interval has elapsed; it is not a probability. Next-release dates and versions remain unconfirmed.

Average Release Cadence

37 days

±20d variance
Elapsed Since Last Drop

70 days

Shipped on 2026-09-02
Annual Velocity

9.9 drops/yr

3 observed intervals · limited history
Cadence Estimate

2026-10-09

Next version: Unannounced
Elapsed / average interval: 189%🔥 PAST AVERAGE CYCLE

Optional AI cadence commentary

Summarize the recorded history and its limitations. Future releases remain unconfirmed.

AUTONOMOUS ARCHITECTURAL DIFF ENGINE

Model Version Capability Delta

AI-synthesized architectural jumps, parameter scaling, and capability shifts across releases.

From:➔To:

Ready to analyze Muse Spark v1.2 vs v1.3

Click Synthesize Diff to analyze latent space adjustments, resolution leaps, parameter shifts, and migration caveats via Gemini 3.8 Flash.

Version history

4 releases tracked

  1. 1.3

    minor2 Sept 2026 · 2mo

    Muse Spark 1.3 is listed on OpenRouter and models.dev.

    • First listed 2026-09-02 as meta/muse-spark-1.3.
    • Platform listing, not a lab announcement. See the source for availability and details.
    First listedSpecific source link · unverified ↗

  2. 1.2

    minor5 Aug 2026 · 3mo

    Muse Spark 1.2 ships with Muse Code, a terminal coding agent.

    • Terminal-Bench 2.1 up to 82.9% from 76.2%; DeepSWE v1.1 to 59.3% from 53.0%.
    • Trained on whole software engineering workflows rather than completion.
    • 1M context at unchanged pricing.
    • Meta's third model in four months.
    Date basis unconfirmedGeneral link · release source needed ↗

  3. 1.1

    minor18 Jul 2026 · 3mo

    Muse Spark 1.1 leans hard into computer use.

    • 1,000,000-token context window.
    • Positioned on agent work rather than chat.
    Date basis unconfirmedSource needed

  4. 1.0

    major14 May 2026 · 6mo

    First Muse Spark release.

    • Agent-first framing from launch.
    Date basis unconfirmedSource needed

Also in Agents

Muse Wonder1.0