Muse Spark 1.1
A versatile model, balanced across most use cases.
Overview
Muse Spark 1.1, released July 9 2026, is Meta Superintelligence Labs' second model and the first paid Meta model available via API — a turn for a company until now identified with Llama's open weights. Proprietary and closed-weight. 1,048,576-token context with active compaction, $1.25/$4.25 per million tokens ($0.15 cached input). Its strength is orchestration: it natively spawns and coordinates sub-agents without external framework support. Scores 88.1 on MCP Atlas. It does not, however, match Opus 4.8 or Kimi K3 on raw code generation (Coding Index 71.3). The Meta Model API is OpenAI-compatible, in public preview.
Skill profile
Not disclosed
Strengths
- World-class on Arena
- Very long context
Limitations
- No native GDPR guarantee
Who is it for
- you handle sensitive EU data
Access & availability
Key specifications
Estimate your monthly cost
Per-token API pricingFor the same usage
- Claude Opus 5$327+384%
- GPT-5.6 Sol$363+436%
- Claude Fable 5$654+867%
Indicative estimate based on standard API rates (excluding caching, batch and volume discounts). Always check the official pricing before committing.
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Advanced data · for expertsArchitecture, modalities, detailed cost, full benchmarks▾
| Arena Elo | 1490 |
| MMLU | — |
| GPQA | — |
| HumanEval | — |
| SWE-Bench | — |
| MATH | — |