GPT-5.3 Codex

gpt-codex

LLM Gateway · gpt-5.3-codex

Capabilities

Tool CallYes

ReasoningYes

Structured OutputYes

Temperature ControlNo

AttachmentsYes

Open WeightsNo

Input

textimagepdf

Output

text

Input$1.75

Output$14.00

Cache Read$0.17

Direct installation coming soon — March 2026

ProviderLLM Gateway

Model IDgpt-5.3-codex

Familygpt-codex

Knowledge Cutoff2025-08-31

Release Date2026-02-05

Last Updated2026-02-05

Context400K

Max Input272K

Max Output128K

@ai-sdk/openai-compatible