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Provider Docs
GPT 5.3 Codex (Fast)
gpt-codexVercel AI Gateway · openai/gpt-5.3-codex-fast
Capabilities
Tool CallYes
ReasoningYes
Structured OutputYes
Temperature ControlYes
AttachmentsYes
Open WeightsNo
Modalities
Input
textimagepdf
Output
text
Pricing (per 1M tokens)
Input$3.50
Output$28.00
Cache Read$0.35
Direct installation coming soon — March 2026
Details
ProviderVercel AI Gateway
Model IDopenai/gpt-5.3-codex-fast
Familygpt-codex
Knowledge Cutoff2025-08-31
Release Date2026-02-05
Last Updated2026-02-05