All models
OpenAI

GPT-5.3 Codex

gpt-5.3-codex

Pricing

~91%
Input
$0.155171 / 1,000,000 tokens
Output
$1.241368 / 1,000,000 tokens
Cache read
$0.015517 / 1,000,000 tokens
Cache write
$0.155171 / 1,000,000 tokens
How pricing works

Discount history

91.1%
Nov 7, 11:57 PMNov 8, 03:56 AM UTC

Model details

Input
text
Output
text
Context window
400,000 tokens
Maximum output
128,000 tokens
Availability
$10.2KUncapped capacity
Updated
11/8/2026, 3:58:06 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingTool callingVisionReasoning

Supported parameters

include_reasoningmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools