by OpenAIFast
Fast GPT-5.4 variant for coding, computer use, and high-volume subagent workloads
Detailed content for this model is coming soon.
OpenAI
Smaller, faster version of GPT-4.1
Legacy fast model — prefer GPT-5 mini
StepFun
196B MoE multimodal model — native image & video understanding, selectable reasoning depth
Google
Frontier intelligence with superior search and grounding