Release dates
— GPT-5.3-Codex-Spark launched as a real-time coding research preview. ↗
GPT-5.3-Codex-Spark
A small, ultra-fast Codex research preview designed for real-time interactive coding.
MODEL NUMBER059
- First public date
- 2026-02-12
- Organization
- OpenAI
- Family
- GPT
01
Specifications
Only published specifications are shown.
- Context
- 128,000 tokens
- Input modalities
- Text
- Open weights
- No
- Status
- Legacy
02
Overview
03
Architecture & capabilities
Model capabilities
Coding
Unclassified tags
Fast action
04
Release history
GPT-5.3-Codex-Spark launched as a real-time coding research preview.
View source05
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06
Sources
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