Muse Spark
FrontierMeta•Released on 2026-04-15
Meta Superintelligence Labs' first model, released April 2026. Marks Meta's controversial departure from Llama's open-source legacy — Muse Spark is proprietary. Achieves Llama-4-Maverick-level reasoning with over an order of magnitude less compute, using a 'thought compression' technique that penalizes excessive thinking time.
84
Overall Score
Voice of the community
sample 60“Goodbye, Llama? Meta launches new proprietary AI model Muse Spark — first since Superintelligence Labs' formation.”
“Muse Spark achieves reasoning capabilities using over an order of magnitude less compute than Llama 4 Maverick, via 'thought compression'.”
Core Specs
0K
Context Window
0K
Max Output
ReasoningOpen Sourcetextimage
Scenario Scores
Pros & Cons
Sentiment45% +35% ·20% −
Pros
- +10x+ more compute-efficient than Llama 4 Maverick
- +Novel 'thought compression' training technique
- +Re-entry to Top 5 global models
- +Backed by Meta Superintelligence Labs
Cons
- −Proprietary — no open weights (departure from Llama legacy)
- −Limited technical details at launch
- −Benchmarks not yet independently verified
- −Pricing and availability still limited
Pricing
Input (per 1M tokens)$0.00
Output (per 1M tokens)$0.00
Updated on 2026-04-21
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Reliability
Incidents (30d)0