GPT-5.3-Codex-Spark: Superfast AI Coding at 1,000 Tokens/Second!

infrastructure#llm🏛️ Official|Analyzed: Mar 2, 2026 14:30•
Published: Mar 2, 2026 13:05
•
1 min read
•Zenn OpenAI

Analysis

OpenAI's GPT-5.3-Codex-Spark is revolutionizing real-time coding with its incredible speed. Utilizing the Cerebras WSE-3 chip, this new model achieves inference speeds up to 1,000 tokens per second! This opens up exciting possibilities for interactive coding and pair programming.
Reference / Citation
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"Codex-Spark is designed for 'real-time, interactive coding,' and is a smaller, faster version of GPT-5.3-Codex."
Z
Zenn OpenAIMar 2, 2026 13:05
* Cited for critical analysis under Article 32.
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Source: Zenn OpenAI