Model Comparator

Compare up to four models using the same criteria.

GPT-5.6 Sol (Medium)
OpenAI
GPT-5.4 (Xhigh)
OpenAI

Differences only

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

Model Comparator
Metrics	GPT-5.6 Sol (Medium) OpenAI	GPT-5.4 (Xhigh) OpenAI
Intelligence	Best: 39.2	39
Coding	Best: 76.3	71.1
Agentic	39.7	—
Speed	75.7 t/s	Best: 85.5 t/s
TTFT	Best: 7.26 s	178 s
Input · $ / 1M tokens	$4×1.6 relative to the lowest price among the compared models	Best: $2.50
Output · $ / 1M tokens	$20×1.3 relative to the lowest price among the compared models	Best: $15
Context window	1M	Best: 1.1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	$0.505	—

Intelligence

GPT-5.6 Sol (Medium): Best: 39.2
GPT-5.4 (Xhigh): 39

Coding

GPT-5.6 Sol (Medium): Best: 76.3
GPT-5.4 (Xhigh): 71.1

Agentic

GPT-5.6 Sol (Medium): 39.7
GPT-5.4 (Xhigh): —

Speed

GPT-5.6 Sol (Medium): 75.7 t/s
GPT-5.4 (Xhigh): Best: 85.5 t/s

TTFT

GPT-5.6 Sol (Medium): Best: 7.26 s
GPT-5.4 (Xhigh): 178 s

Input · $ / 1M tokens

GPT-5.6 Sol (Medium): $4×1.6 relative to the lowest price among the compared models
GPT-5.4 (Xhigh): Best: $2.50

Output · $ / 1M tokens

GPT-5.6 Sol (Medium): $20×1.3 relative to the lowest price among the compared models
GPT-5.4 (Xhigh): Best: $15

Context window

GPT-5.6 Sol (Medium): 1M
GPT-5.4 (Xhigh): Best: 1.1M

Reasoning

GPT-5.6 Sol (Medium): Yes
GPT-5.4 (Xhigh): Yes

Open weights

GPT-5.6 Sol (Medium): No
GPT-5.4 (Xhigh): No

Cost / task

GPT-5.6 Sol (Medium): $0.505
GPT-5.4 (Xhigh): —

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-5.6 Sol (Medium)39.2 · $8
GPT-5.4 (Xhigh)39 · $5.63