[CC Switch Upgrade: DeepSeek-V4-Flash Connects to Codex Without Backend Relay] According to monitoring by Beating, the open-source model switching tool CC Switch has released version v3.19.1, which supports the native Responses API of DeepSeek-V4-Flash. By entering the DeepSeek API Key, users can directly invoke this model within Codex. The previous version also allowed integration with DeepSeek, but required enabling CC Switch's local routing to convert Codex requests into another interface format. The new version connects directly to DeepSeek's official interface, eliminating the need for backend proxies during use. Currently, only V4-Flash supports this direct connection method. V4-Pro still requires the old routing, but DeepSeek is expected to add Responses API support for it in early August. [Original Link]