OpenAI has introduced GPT-5.3-Codex-Spark, a coding model powered by Cerebras. The model is described as ultra-fast, with some reports suggesting it can deliver over 1000 tokens per second, and is said to enable near-instant code generation. The introduction of GPT-5.3-Codex-Spark marks a notable development in OpenAI's coding capabilities, with the company utilizing Cerebras hardware in a significant move.