Model Comparator

Compare up to four models using the same criteria.

GPT-5.1 Codex (High)
OpenAI
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	GPT-5.1 Codex (High) OpenAI	GPT-5.4 mini (Xhigh) OpenAI
Intelligence	23.7	Best: 24.1
Coding	—	56.1
Math	95.7	—
Agentic	—	17.9
Speed	126 t/s	Best: 260 t/s
TTFT	Best: 10.4 s	110 s
Input · $ / 1M tokens	$1.25×1.7 relative to the lowest price among the compared models	Best: $0.75
Output · $ / 1M tokens	$10×2.2 relative to the lowest price among the compared models	Best: $4.50
Context window	1M	1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	—	$0.371

Intelligence

GPT-5.1 Codex (High): 23.7
GPT-5.4 mini (Xhigh): Best: 24.1

Coding

GPT-5.1 Codex (High): —
GPT-5.4 mini (Xhigh): 56.1

Math

GPT-5.1 Codex (High): 95.7
GPT-5.4 mini (Xhigh): —

Agentic

GPT-5.1 Codex (High): —
GPT-5.4 mini (Xhigh): 17.9

Speed

GPT-5.1 Codex (High): 126 t/s
GPT-5.4 mini (Xhigh): Best: 260 t/s

TTFT

GPT-5.1 Codex (High): Best: 10.4 s
GPT-5.4 mini (Xhigh): 110 s

Input · $ / 1M tokens

GPT-5.1 Codex (High): $1.25×1.7 relative to the lowest price among the compared models
GPT-5.4 mini (Xhigh): Best: $0.75

Output · $ / 1M tokens

GPT-5.1 Codex (High): $10×2.2 relative to the lowest price among the compared models
GPT-5.4 mini (Xhigh): Best: $4.50

Context window

GPT-5.1 Codex (High): 1M
GPT-5.4 mini (Xhigh): 1M

Reasoning

GPT-5.1 Codex (High): Yes
GPT-5.4 mini (Xhigh): Yes

Open weights

GPT-5.1 Codex (High): No
GPT-5.4 mini (Xhigh): No

Cost / task

GPT-5.1 Codex (High): —
GPT-5.4 mini (Xhigh): $0.371

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.

GPT-5.1 Codex (High)23.7 · $3.44
GPT-5.4 mini (Xhigh)24.1 · $1.69