Muse Spark 1.2
ModelActiveby Meta · family “muse-spark”
Muse Spark 1.2 is a reasoning model from Meta, designed for complex agentic tasks. It accepts text, images, video, and PDF documents, returns text, and offers a 1M-token context window.... (description from the OpenRouter listing)
in: textin: imagein: videoin: fileout: textReasoningTool useStructured output
Epoch Capabilities Index
155.2 #27 of 268
90% CI 153.2 – 158.1
Released
5 Aug 2026
Context window
1.05M tokens
Max output
944K tokens
Input $ / 1M tokens
$1.25
Output $ / 1M tokens
$4.25
Cached input $ / 1M
$0.15
Each benchmark shown separately with its own source
Benchmark results (3)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| ProofBench | math | 43.0% | 43% | — | — | External ↗ |
| APEX-Agents | agents | 36.4% | 48% | — | — | External ↗ |
| SimpleBench | reasoning | 74.5% | 91% | — | — | External ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
2 recorded prices on 2 Sep 2026 (OpenRouter listing + Internet Archive snapshots); re-read on every data refresh, most recently 11h ago. Steps show when the price changed.
Events
- Model launchMajorMeta releases Muse Spark 1.2Epoch AI Benchmarking Hub