GPT-5.3 Codex
vs
GPT-5.4 mini

Compare AI models side by side

Responses to your questions will appear side by side in the chat windows below.

GPT-5.3 Codex
Price: $7.88/1M tokens

Cost: $0

GPT-5.3 Codex

Open AI

Knowledge cutoff: 2025-08-31 · Context window: 400,000 tokens · Reasoning model

Input Price

$1.75 / 1M tokens

Output Price

$14 / 1M tokens

Context Window

400,000 tokens

Hey! I'm here and ready to chat about whatever you'd like.

GPT-5.4 mini
Price: $2.63/1M tokens

Cost: $0

GPT-5.4 mini

Open AI

Knowledge cutoff: 2025-08-31 · Context window: 400,000 tokens · Reasoning model

Input Price

$0.75 / 1M tokens

Output Price

$4.5 / 1M tokens

Context Window

400,000 tokens

Hey! I'm here and ready to chat about whatever you'd like.