Base44 Superagents-AI agent that does it all
Mini toolsGPT 5.3 Codex Spark
By OpenAI
GPT-5.3-Codex-Spark is a distilled version of GPT-5.3-Codex built specifically for ultra low latency coding. It runs on Cerebras wafer scale systems and is tuned to feel near instant, exceeding 1,000 tokens per second while staying strong on real world software tasks. At launch it is text only with a 128k context window and is offered as a research preview to ChatGPT Pro users through the Codex app, CLI and IDE extensions, complementing full GPT-5.3-Codex for heavier long running work.
New
Coding
Gen 2
Overview
GPT-5.3-Codex-Spark is OpenAI’s first real-time coding model, a smaller GPT-5.3-Codex variant that streams over 1,000 tokens per second with a 128k context window on Cerebras hardware, in research preview for ChatGPT Pro users.
About OpenAI
OpenAI is a technology company that specializes in artificial intelligence research and innovation.
Industry:
Artificial Intelligence
Company Size:
5000-5500
Location:
San Francisco, California, US
Website:
openai.com
Tools using GPT 5.3 Codex Spark
Last updated: February 26, 2026
