Not a benchmark table. This puts pricing, context, interface fit, and key visibility into one decision card.
高阶专业版追踪位，适合企业级重度编码、研究与复杂代理工作流。
多模态方向的品牌词入口，适合中国模型库收录。
This is a cross-provider comparison. Start with the job boundary, then verify what your key can actually see.
On the listed price snapshot, Step-1o Vision is cheaper on combined input and output, but real routing, discounts, and limits still matter.
GPT-5.5 Pro has the larger context window, which helps with long documents, knowledge bases, logs, and multi-turn workflows.
Do not start with which model is absolutely stronger. Start with the boundary: cost, context, speed, quality, ecosystem, or supply stability.
If you already hold a key, the valuable check is provider identity, callable models, and whether balance, limits, or subscription status are visible.
Commercially, do not look at model names alone. Combine price, limits, region, upstream stability, and ongoing monitoring.
