Model Comparator

Compare up to four models using the same criteria.

GPT-5.6 Terra (Medium)
OpenAI
GPT-5.2 (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 Terra (Medium) OpenAI	GPT-5.2 (Xhigh) OpenAI
Intelligence	30.1	Best: 30.4
Coding	64.7	—
Math	—	99
Agentic	30.4	—
Speed	Best: 88.4 t/s	73.3 t/s
TTFT	Best: 1.66 s	125 s
Input · $ / 1M tokens	$2×1.1 relative to the lowest price among the compared models	Best: $1.75
Output · $ / 1M tokens	Best: $12	$14×1.2 relative to the lowest price among the compared models
Context window	Best: 1M	400K
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	$0.183	—

Intelligence

GPT-5.6 Terra (Medium): 30.1
GPT-5.2 (Xhigh): Best: 30.4

Coding

GPT-5.6 Terra (Medium): 64.7
GPT-5.2 (Xhigh): —

Math

GPT-5.6 Terra (Medium): —
GPT-5.2 (Xhigh): 99

Agentic

GPT-5.6 Terra (Medium): 30.4
GPT-5.2 (Xhigh): —

Speed

GPT-5.6 Terra (Medium): Best: 88.4 t/s
GPT-5.2 (Xhigh): 73.3 t/s

TTFT

GPT-5.6 Terra (Medium): Best: 1.66 s
GPT-5.2 (Xhigh): 125 s

Input · $ / 1M tokens

GPT-5.6 Terra (Medium): $2×1.1 relative to the lowest price among the compared models
GPT-5.2 (Xhigh): Best: $1.75

Output · $ / 1M tokens

GPT-5.6 Terra (Medium): Best: $12
GPT-5.2 (Xhigh): $14×1.2 relative to the lowest price among the compared models

Context window

GPT-5.6 Terra (Medium): Best: 1M
GPT-5.2 (Xhigh): 400K

Reasoning

GPT-5.6 Terra (Medium): Yes
GPT-5.2 (Xhigh): Yes

Open weights

GPT-5.6 Terra (Medium): No
GPT-5.2 (Xhigh): No

Cost / task

GPT-5.6 Terra (Medium): $0.183
GPT-5.2 (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 Terra (Medium)30.1 · $4.50
GPT-5.2 (Xhigh)30.4 · $4.81