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GPT 5.3 Codex Spark: 15x Faster AI Coding
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GPT 5.3 Codex Spark: 15x Faster AI Coding

OpenAI's GPT 5.3 Codex Spark delivers 1000+ tokens/second with Cerebras chips. 80% faster roundtrips, 128K context, research preview for Pro users. Here's what's actually new.

February 13, 202610 min read

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