OpenAI's new Spark model codes 15x faster than GPT-5.3-Codex - but there's a catch ...
GPT-3.5 Codex Spark offers 128,000-token context and ChatGPT Pro-only access, giving developers quicker real-time coding responses at lower cost.
ChatGPT Pro subscribers can try the ultra-low-latency model by updating to the latest versions of the Codex app, CLI, and VS Code extension. OpenAI is also making Codex-Spark available via the API to ...
OpenAI has launched GPT-5.3-Codex-Spark, a lightweight real-time coding model that promises faster output, lower latency, and interactive collaboration for developers.
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