OpenAI has unveiled a new model called GPT-5.3-Codex-Spark, which is capable of real-time coding. The model is reportedly powered by Cerebras and can generate code at a high speed, with some outlets suggesting it can deliver up to 1,000 tokens per second and code 15 times faster than its predecessor. The specifics of the model's capabilities and performance are not entirely clear, with some outlets noting that there may be certain limitations or catches to its use.