DeepSeek for Codex · v0.9.0
Run Codex on DeepSeek
Drop in your DeepSeek key, pick a model and thinking mode. Codex (CLI / Desktop / plugins) uses DeepSeek on next launch — same work, ~90% lower token cost.
One-time purchase · lifetime updates · Card / Apple Pay / Alipay / WeChat Pay
Cost vs OpenAI
A typical month of Codex use
Stock Codex (GPT-5 class)
$50 – $120 / mo
~5–10M tokens/day at $5 in / $15 out per M
DeepSeek V4 (this app)
$3 – $9 / mo
same usage, Flash $0.14/$0.28, Pro $0.42/$0.87 per M
One month of savings pays for this app 2–6 times over. Buy once, save forever after.
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Cut token cost ~90%
DeepSeek V4 Flash is $0.14 / $0.28 per million tokens; Pro is $0.435 / $0.87. OpenAI charges 5–15× more for the same work.
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Codex picks it up automatically
Codex CLI, Codex Desktop, plugins — they all route through DeepSeek on next launch. Zero code changes.
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Full tool calling
Agent tasks, file edits, shell exec, safety prompts — identical to native OpenAI behavior.
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See cost as you go
Token usage + USD spend for each conversation, live in the status bar. No billing dashboard needed.
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Auto-updates
App notifies you when a new version ships. One-click update, no DMG re-download.
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Signed + notarized for macOS
Apple Developer ID signed, notarization ticket stapled. Double-click to install, no Gatekeeper warning.
Why this tool?
OpenAI changed Codex's protocol in Feb 2026, breaking DeepSeek's direct integration. This app runs a local translator that lets Codex see OpenAI and DeepSeek see Anthropic — both happy. You paste a key, pick a model, click Apply. We handle the rest.
You could build this yourself — about half a day's work. The $5 / ¥19.9 pays for: no Rust setup, no maintenance, future API changes tracked, full tool calling, signed + notarized macOS app with no Gatekeeper warning.
FAQ
›Will my DeepSeek API key be uploaded anywhere?
No. The key lives in your Mac's Keychain. The local translator forwards it directly to DeepSeek's official API (api.deepseek.com) — no third-party server in between.
›Does it work with Codex Desktop?
Yes. The app writes to ~/.codex/config.toml, which Codex CLI, Codex Desktop, and Codex plugins all read. Configure once, works everywhere.
›Is there a Windows version?
Yes — Windows x64 is live. Download the .msi and install. It's unsigned, so if SmartScreen warns during install, click More info → Run anyway. macOS and Windows share the same key and configure identically.
›Pro vs Flash — which one?
Pro = V4 1.6T params with deep reasoning, for complex code tasks and long contexts. Flash = 284.8B params with fast response, for daily iteration and bulk completions. Thinking mode is toggleable on both. Switch any time inside the app.
macOS (Apple Silicon + Intel) & Windows · instant download