Model Comparator

Compare up to four models using the same criteria.

Grok 4.3 (Low)
SpaceXSI
GPT-5.4 mini (Xhigh)
OpenAI

Differences only

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

Model Comparator
Metrics	Grok 4.3 (Low) SpaceXSI	GPT-5.4 mini (Xhigh) OpenAI
Intelligence	Best: 24.3	24.1
Coding	—	56.1
Agentic	—	17.9
Speed	88.9 t/s	Best: 233 t/s
TTFT	Best: 8.09 s	114 s
Input · $ / 1M tokens	$1.25×1.7 relative to the lowest price among the compared models	Best: $0.75
Output · $ / 1M tokens	Best: $2.50	$4.50×1.8 relative to the lowest price among the compared models
Context window	Best: 1M	400K
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	—	$0.447

Intelligence

Grok 4.3 (Low): Best: 24.3
GPT-5.4 mini (Xhigh): 24.1

Coding

Grok 4.3 (Low): —
GPT-5.4 mini (Xhigh): 56.1

Agentic

Grok 4.3 (Low): —
GPT-5.4 mini (Xhigh): 17.9

Speed

Grok 4.3 (Low): 88.9 t/s
GPT-5.4 mini (Xhigh): Best: 233 t/s

TTFT

Grok 4.3 (Low): Best: 8.09 s
GPT-5.4 mini (Xhigh): 114 s

Input · $ / 1M tokens

Grok 4.3 (Low): $1.25×1.7 relative to the lowest price among the compared models
GPT-5.4 mini (Xhigh): Best: $0.75

Output · $ / 1M tokens

Grok 4.3 (Low): Best: $2.50
GPT-5.4 mini (Xhigh): $4.50×1.8 relative to the lowest price among the compared models

Context window

Grok 4.3 (Low): Best: 1M
GPT-5.4 mini (Xhigh): 400K

Reasoning

Grok 4.3 (Low): Yes
GPT-5.4 mini (Xhigh): Yes

Open weights

Grok 4.3 (Low): No
GPT-5.4 mini (Xhigh): No

Cost / task

Grok 4.3 (Low): —
GPT-5.4 mini (Xhigh): $0.447

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.

Grok 4.3 (Low)24.3 · $1.56
GPT-5.4 mini (Xhigh)24.1 · $1.69