Model Comparator

Compare up to four models using the same criteria.

GPT-5.5 (Non-reasoning)
OpenAI
Kimi K2.5 (Reasoning)
Moonshot AI

Differences only

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

Model Comparator
Metrics	GPT-5.5 (Non-reasoning) OpenAI	Kimi K2.5 (Reasoning) Moonshot AI
Intelligence	23.2	Best: 23.5
Coding	Best: 56.5	46.8
Speed	Best: 74 t/s	60 t/s
TTFT	Best: 0.89 s	1.85 s
Input · $ / 1M tokens	$5×8.3 relative to the lowest price among the compared models	Best: $0.60
Output · $ / 1M tokens	$30×10.9 relative to the lowest price among the compared models	Best: $2.75
Context window	Best: 922K	256K
Reasoning	No	Yes
Open weights	No	Yes

Intelligence

GPT-5.5 (Non-reasoning): 23.2
Kimi K2.5 (Reasoning): Best: 23.5

Coding

GPT-5.5 (Non-reasoning): Best: 56.5
Kimi K2.5 (Reasoning): 46.8

Speed

GPT-5.5 (Non-reasoning): Best: 74 t/s
Kimi K2.5 (Reasoning): 60 t/s

TTFT

GPT-5.5 (Non-reasoning): Best: 0.89 s
Kimi K2.5 (Reasoning): 1.85 s

Input · $ / 1M tokens

GPT-5.5 (Non-reasoning): $5×8.3 relative to the lowest price among the compared models
Kimi K2.5 (Reasoning): Best: $0.60

Output · $ / 1M tokens

GPT-5.5 (Non-reasoning): $30×10.9 relative to the lowest price among the compared models
Kimi K2.5 (Reasoning): Best: $2.75

Context window

GPT-5.5 (Non-reasoning): Best: 922K
Kimi K2.5 (Reasoning): 256K

Reasoning

GPT-5.5 (Non-reasoning): No
Kimi K2.5 (Reasoning): Yes

Open weights

GPT-5.5 (Non-reasoning): No
Kimi K2.5 (Reasoning): Yes

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-5.5 (Non-reasoning)23.2 · $11.25
Kimi K2.5 (Reasoning)23.5 · $1.14