Model Comparator

Compare up to four models using the same criteria.

Muse Spark Open (Xhigh)
Meta
Grok 4.5 (High)
SpaceXSI

Differences only

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Model Comparator
Metrics	Muse Spark Open (Xhigh) Meta	Grok 4.5 (High) SpaceXSI
Intelligence	Best: 38.9	38.8
Coding	—	72.4
Agentic	—	41.2
Speed	Best: 134 t/s	54.9 t/s
TTFT	Best: 0.73 s	5.08 s
Input · $ / 1M tokens	Best: $1.25	$2×1.6 relative to the lowest price among the compared models
Output · $ / 1M tokens	Best: $4.25	$6×1.4 relative to the lowest price among the compared models
Context window	Best: 1M	500K
Reasoning	Yes	Yes
Open weights	Yes	No
Cost / task	Best: $0.844	$0.881

Intelligence

Muse Spark Open (Xhigh): Best: 38.9
Grok 4.5 (High): 38.8

Coding

Muse Spark Open (Xhigh): —
Grok 4.5 (High): 72.4

Agentic

Muse Spark Open (Xhigh): —
Grok 4.5 (High): 41.2

Speed

Muse Spark Open (Xhigh): Best: 134 t/s
Grok 4.5 (High): 54.9 t/s

TTFT

Muse Spark Open (Xhigh): Best: 0.73 s
Grok 4.5 (High): 5.08 s

Input · $ / 1M tokens

Muse Spark Open (Xhigh): Best: $1.25
Grok 4.5 (High): $2×1.6 relative to the lowest price among the compared models

Output · $ / 1M tokens

Muse Spark Open (Xhigh): Best: $4.25
Grok 4.5 (High): $6×1.4 relative to the lowest price among the compared models

Context window

Muse Spark Open (Xhigh): Best: 1M
Grok 4.5 (High): 500K

Reasoning

Muse Spark Open (Xhigh): Yes
Grok 4.5 (High): Yes

Open weights

Muse Spark Open (Xhigh): Yes
Grok 4.5 (High): No

Cost / task

Muse Spark Open (Xhigh): Best: $0.844
Grok 4.5 (High): $0.881

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Muse Spark Open (Xhigh)38.9 · $0.844
Grok 4.5 (High)38.8 · $0.881