DeepSeek-V4.1-Flash + Claude Code: no proxy needed
This is the easy camp. DeepSeek publishes an Anthropic-compatible endpoint specifically so tools built for the Anthropic Messages API can use it directly, which means you can point Claude Code at DeepSeek-V4.1-Flash without any translating proxy, unlike OpenAI's GPT or xAI's Grok. You bring your own DeepSeek key, and usage is billed to you at DeepSeek's very low rates.
The config
What to set
- ANTHROPIC_BASE_URLPoint it at DeepSeek's Anthropic-compatible base URL (the /anthropic endpoint).
- ANTHROPIC_AUTH_TOKENYour DeepSeek API key, usage is billed to your DeepSeek account.
- ModelSelect the DeepSeek-V4.1-Flash model using the exact name the endpoint exposes.
Why DeepSeek-V4.1-Flash for coding
What it brings
| Reason | Detail |
|---|---|
| Cost | Among the lowest per-token prices for a capable fast coding model |
| Speed | The Flash line is tuned for low latency in the edit-run-read loop |
| No proxy tax | Anthropic-compatible, so no extra translating service like GPT/Grok need |
The cleaner option: V4.1-Flash as a one-click setting
The endpoint swap works, but Claude Code is single-provider by design, so mixing DeepSeek and Claude means reconfiguring each time. If you want V4.1-Flash for cheap routine work and Claude for the hard stuff, use an agent where each provider is a selectable entry, and where DeepSeek, being Anthropic-compatible, just works with no proxy.
What that looks like with Wuwei
DeepSeek-V4.1-Flash in the model list
Pick it in the UI; Claude, Kimi, Qwen, GLM and OpenAI-compatible endpoints sit alongside.
No proxy, and one-click switch
DeepSeek works natively (no translator, unlike Grok); move between it and Claude mid-task without editing config or restarting.
Free, open source, local
MIT-licensed, runs on your machine, reads your real files; you only pay DeepSeek's usage.
FAQ
Can Claude Code use DeepSeek-V4.1-Flash?
Yes. DeepSeek exposes an Anthropic-compatible endpoint, so set ANTHROPIC_BASE_URL to DeepSeek's /anthropic base and ANTHROPIC_AUTH_TOKEN to your DeepSeek key, then select the V4.1-Flash model. No translating proxy is needed.
Do I need a proxy for DeepSeek-V4.1-Flash in Claude Code?
No. DeepSeek is Anthropic-compatible, so Claude Code points straight at it, unlike OpenAI's GPT or xAI's Grok, which are OpenAI-compatible and need a translating proxy.
Is DeepSeek-V4.1-Flash cheaper than Claude for coding?
Per token, yes, DeepSeek is one of the lowest-cost capable coding models, and the Flash line is tuned for speed, which is why people route routine agent work to it and keep Claude for the hardest tasks.
How do I switch between DeepSeek-V4.1-Flash and Claude easily?
Use an agent where the model is a setting. Wuwei is free and open source, DeepSeek is already supported and works natively (no proxy), and switching to Claude is one click instead of an env-var edit and restart.