Model Comparator

Compare up to four models using the same criteria.

GPT-5.6 Sol (Non-reasoning)
OpenAI
GPT-5.2 Codex (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 (Non-reasoning) OpenAI	GPT-5.2 Codex (Xhigh) OpenAI
Intelligence	28.3	Best: 28.5
Coding	65.1	—
Agentic	28.1	—
Speed	74.2 t/s	Best: 115 t/s
TTFT	Best: 0.94 s	93.2 s
Input · $ / 1M tokens	$4×2.3 relative to the lowest price among the compared models	Best: $1.75
Output · $ / 1M tokens	$20×1.4 relative to the lowest price among the compared models	Best: $14
Context window	Best: 1M	400K
Reasoning	No	Yes
Open weights	No	No

Intelligence

GPT-5.6 Sol (Non-reasoning): 28.3
GPT-5.2 Codex (Xhigh): Best: 28.5

Coding

GPT-5.6 Sol (Non-reasoning): 65.1
GPT-5.2 Codex (Xhigh): —

Agentic

GPT-5.6 Sol (Non-reasoning): 28.1
GPT-5.2 Codex (Xhigh): —

Speed

GPT-5.6 Sol (Non-reasoning): 74.2 t/s
GPT-5.2 Codex (Xhigh): Best: 115 t/s

TTFT

GPT-5.6 Sol (Non-reasoning): Best: 0.94 s
GPT-5.2 Codex (Xhigh): 93.2 s

Input · $ / 1M tokens

GPT-5.6 Sol (Non-reasoning): $4×2.3 relative to the lowest price among the compared models
GPT-5.2 Codex (Xhigh): Best: $1.75

Output · $ / 1M tokens

GPT-5.6 Sol (Non-reasoning): $20×1.4 relative to the lowest price among the compared models
GPT-5.2 Codex (Xhigh): Best: $14

Context window

GPT-5.6 Sol (Non-reasoning): Best: 1M
GPT-5.2 Codex (Xhigh): 400K

Reasoning

GPT-5.6 Sol (Non-reasoning): No
GPT-5.2 Codex (Xhigh): Yes

Open weights

GPT-5.6 Sol (Non-reasoning): No
GPT-5.2 Codex (Xhigh): No

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 (Non-reasoning)28.3 · $8
GPT-5.2 Codex (Xhigh)28.5 · $4.81