apiex选择模型后可复制配置给 AI，也可以快速测试当前连接延迟。
OpenAI
The deep-reasoning flagship in the GPT-5 family, always running at high thinking effort and slower to respond, suited for hard analysis or coding where accuracy outranks speed.
OpenAI
Flagship reasoning model tuned for agentic coding and long-context analysis, with steadier instruction following and fewer hallucinations on high-stakes workflows.
OpenAI
Flagship GPT-5.4 variant with chain-of-thought reasoning tuned for agentic coding and multi-step problem solving on high-stakes tasks.
OpenAI
Reasoning-heavy GPT-5.5 tier tuned for long-horizon agentic coding and complex multi-step workflows, with image input.
OpenAI
GPT-5.5 natively supports video comprehension, speech emotion recognition, and autonomous tool calling, delivering omni-modal foundational capabilities for agent-based execution of complex tasks.
OpenAI
Reasoning-focused variant in the o3 family that produces longer chain-of-thought traces and accepts image inputs. Suited for harder math proofs, scientific reasoning, and multi-step coding tasks, with more consistent outputs across repeated runs.