Model Comparator

Compare up to four models using the same criteria.

GPT-5.4 (Xhigh)
OpenAI
DeepSeek V4.1 Flash (Max)
DeepSeek

Differences only

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

Model Comparator
Metrics	GPT-5.4 (Xhigh) OpenAI	DeepSeek V4.1 Flash (Max) DeepSeek
Intelligence	39	Best: 39.5
Coding	71.1	—
Cyber Index	—	40.8%
Speed	85.5 t/s	Best: 174 t/s
TTFT	178 s	Best: 1.13 s
Input · $ / 1M tokens	$2.50×8.3 relative to the lowest price among the compared models	Best: $0.30
Output · $ / 1M tokens	$15×12.5 relative to the lowest price among the compared models	Best: $1.20
Context window	Best: 1.1M	1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	—	$0.265

Intelligence

GPT-5.4 (Xhigh): 39
DeepSeek V4.1 Flash (Max): Best: 39.5

Coding

GPT-5.4 (Xhigh): 71.1
DeepSeek V4.1 Flash (Max): —

Cyber Index

GPT-5.4 (Xhigh): —
DeepSeek V4.1 Flash (Max): 40.8%

Speed

GPT-5.4 (Xhigh): 85.5 t/s
DeepSeek V4.1 Flash (Max): Best: 174 t/s

TTFT

GPT-5.4 (Xhigh): 178 s
DeepSeek V4.1 Flash (Max): Best: 1.13 s

Input · $ / 1M tokens

GPT-5.4 (Xhigh): $2.50×8.3 relative to the lowest price among the compared models
DeepSeek V4.1 Flash (Max): Best: $0.30

Output · $ / 1M tokens

GPT-5.4 (Xhigh): $15×12.5 relative to the lowest price among the compared models
DeepSeek V4.1 Flash (Max): Best: $1.20

Context window

GPT-5.4 (Xhigh): Best: 1.1M
DeepSeek V4.1 Flash (Max): 1M

Reasoning

GPT-5.4 (Xhigh): Yes
DeepSeek V4.1 Flash (Max): Yes

Open weights

GPT-5.4 (Xhigh): No
DeepSeek V4.1 Flash (Max): No

Cost / task

GPT-5.4 (Xhigh): —
DeepSeek V4.1 Flash (Max): $0.265

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-5.4 (Xhigh)39 · $5.63
DeepSeek V4.1 Flash (Max)39.5 · $0.525