"I recorded three ways to quickly connect the DeepSeek v4 flash-0731 version to Codex. Remember to upgrade CCSwitch and… This is a necessary excerpt; read the original source for full context.
@Youngxxxxu (Ryanxlll2): "You can also use opencodex to perfectly unlock everything and have it coexist"
@C_2049s (C 总在佛系开发赛博产品): "Use github.com/aipayim/codex-proxy directly: a local intelligent gateway that handles both upstream and downstream, with multi-key management"
@zhangyoufei666 (张佑飛): "Try my native DS subagent: github.com/BaronCyrus/codex-deepseek-subagent-handoff"
@nbysy: "One profile is all you need"
@king1821661 (Beyonder): "There's a fourth way: GPT commands DS"
| Method | Suitable for | Key feature |
|---|---|---|
| Official script (one command) | People who use only DeepSeek and do not want to tinker | The simplest option; an official one-click configuration script is provided (native Codex adaptation for the 0731 version) |
| CC Switch | People who switch back and forth between a ChatGPT subscription and DeepSeek | Convenient switching between multiple providers |
| Codex++ | People who mainly use the desktop app and want to unlock plugins | Desktop enhancements + plugin support |
The official DeepSeek-V4-Flash 0731 release natively supports the Responses API and is adapted for Codex: developers can connect DeepSeek to the Codex CLI, VS Code extension, or ChatGPT desktop app without changing the base_url (based on the same-source information from the 302.AI evaluation). The official release also provides one-click configuration scripts for macOS/Linux and Windows, making the integration cost nearly zero.
This tutorial targets the deepseek-v4-flash-0731 version; before connecting, upgrade CCSwitch and Codex++ to their latest versions
opencodex, codex-proxy, and codex-deepseek-subagent-handoff in the comments are community-provided alternative or enhanced solutions
DeepSeek V4 Flash
