AI Tool Profile

GPT-5.3-Codex-Spark

OpenAI released GPT-5.3-Codex-Spark, a smaller ultra-fast Codex model designed for real-time coding collaboration and low-latency edits.

Company
OpenAI
Primary category
AI Agents, AI Coding Tools, AI Developer Tools
Best for
Developers who want fast interactive coding help in Codex while reserving larger models for longer, heavier autonomous work.
Pricing
Research preview availability for ChatGPT Pro users at launch, with separate rate limits and limited API partner access.
Free plan
no
API
yes
Open source/open weight
no
Linked launches
1
Latest launch date
February 12, 2026
Last verified
2026-06-08

Verification & Sources

Status
Verified profile
Source links
2
Freshness
Needs recheck: verified June 8, 2026
Last verified
June 8, 2026
Last updated
June 8, 2026

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What It Does

OpenAI released GPT-5.3-Codex-Spark, a smaller ultra-fast Codex model designed for real-time coding collaboration and low-latency edits.

Launch History