DeepSeek V4 Practical Hub
A practical DeepSeek V4 hub for API migration, Pro / Flash routing, and 1M context workflows, organized as an execution path for developers.
Topic Slot
A replaceable live-topic slot
This is a stable live-topic slot. The current topic is DeepSeek V4; when a Claude, Gemini, Qwen, or another AI release becomes the stronger topic, update the config and article list while keeping /en/hot/ stable.
Reading Path
Read in this order
Step 1
Start with migration inventory
Centralize deepseek-chat / deepseek-reasoner usage into a config layer before rollout.
2026-04-25T09:10:00+08:00
DeepSeek V4 API 迁移实战：从 deepseek-chat / reasoner 切到 v4-pro / v4-flash
Step 2
Then define model routing
Route Pro / Flash by task risk, context length, latency, and cost instead of switching blindly.
2026-04-25T09:40:00+08:00
DeepSeek V4 Pro 和 Flash 怎么选：Agent、长文档、代码任务的实战路由
Step 3
Finish with long-context workflows
Use 1M context for audits, migrations, long documents, and agent workflows with clear validation.
2026-04-25T10:10:00+08:00
DeepSeek V4 的 1M context 怎么真正用起来：长文档、代码库和知识库实战
Hub Articles
DeepSeek V4 API 迁移实战：从 deepseek-chat / reasoner 切到 v4-pro / v4-flash
DeepSeek V4 Preview 发布后，旧的 deepseek-chat 和 deepseek-reasoner 会在 2026-07-24 15:59 UTC 后退役。本文按实战派迁移顺序，说明如何把现有调用切到 deepseek-v4-pro 或 deepseek-v4-flash，并在上线前检查模型名、thinking 参数、长上下文和回滚方案。
DeepSeek V4 Pro 和 Flash 怎么选：Agent、长文档、代码任务的实战路由
DeepSeek V4 Preview 同时提供 deepseek-v4-pro 和 deepseek-v4-flash。本文从 Agent workflow、代码生成、长文档分析、客服问答和批处理任务出发，整理模型路由方法。
DeepSeek V4 的 1M context 怎么真正用起来：长文档、代码库和知识库实战
DeepSeek V4 支持 1M context，但长上下文不等于把所有资料一次性塞给模型。本文用实战派方式拆解长文档、代码库、知识库和 Agent workflow 中的 1M context 使用方法，重点讲切片、引用、降噪、模型路由和验收。