GPT 5.3 Codex Spark
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.
- Type
- Coding
- Weights
- Closed
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About OpenAI
1
OpenAI develops and deploys general-purpose artificial intelligence models, products, and developer platforms.
Tools using GPT 5.3 Codex Spark
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