OpenAI
GPT-5.3 Codex
gpt-5.3-codexPricing
~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
Discount history
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