Muse Spark 1.1
Muse Spark 1.1 is an API-only (closed weights) language model from Meta, released July 9, 2026. The context window is 1M tokens. On the Epoch Capabilities Index it scores 154.9, rank 47 of 256 rated models. API price: $1.25 input / $4.25 output per million tokens.
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Lab
Meta
Released
July 9, 2026
Weights
API-only (closed weights)
Parameters
–
Context
1M
Price / M tokens
$1.25 / $4.25 in / out
Epoch ECI
154.9 #47
Benchmark results
| Benchmark (Epoch AI) | Score |
|---|---|
| SimpleQA Verified | 57.8% |
| DeepSWE | 53.3% |
| ProofBench | 39.0% |
| Chess Puzzles | 30.6% |
Links
Announcement · Epoch AI benchmarks
Models with a similar score
Gemini 3.8 Flash · Kimi K3 · Gemini 3.7 Flash · Muse Spark 1.3 · GPT-5.4 · Grok 4.6 · Qwen 3.8 Max · Claude Opus 4.7
More from Meta
Muse Ember · Muse Spark Open · Muse Wonder · Muse Wonder Full · Muse Spark 1.3 · Muse Spark 1.3 Contributor · Muse Glimmer · Muse Glimmer 30B assistant