Post by OpenAI Developers on X
OpenAI Developers@OpenAIDevs
XGPT-5.3-Codex-Spark is the first milestone in our partnership with @cerebras.
It provides a faster tier on the same production stack as our other models, complementing GPUs for workloads where low latency is critical.
t.co
518 likes7 repliesPosted Feb 12, 2026