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Models/OpenAI/GPT-5.3 Codex

GPT-5.3 Codex

OpenAI 🧠 Language Model

OpenAI GPT-5.3 Codex (chat completions endpoint).

Specifications

Input modalitiestext, image
Output modalitiestext
Capabilitiestools, reasoning
Relative speed●●●●○ Fast
Context window272,000 tokens
Max output128,000 tokens
Vision inputYes
Tool callingYes
Streaming outputYes
Input price$3.06 / 1M
Output price$24.50 / 1M

Pricing

$3.06 / 1M input tokens  ·  $24.50 / 1M output tokens

Platform credit pricing — live rates on the Models page.

Use GPT-5.3 Codex on Zubnet →

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