OpenAI: GPT-5.3-Codex vs OpenAI: GPT-5.4 Pro

Side-by-side model comparison based on OpenRouter API data.

SpecOpenAI: GPT-5.3-CodexOpenAI: GPT-5.4 Pro
ProviderOpenAIOpenAI
Context Length400K1.1M
Max Output128K128K
Input Price/1M$1.75$30
Output Price/1M$14$180
Cache Read/1M$0.17Free
Cache Write/1MFreeFree
Input ModalitiesText + Image + FileText + Image + File
Output ModalitiesTextText
TokenizerGPTGPT
ModeratedYesYes
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