DeepClaude Lets You Run Claude Code With DeepSeek's Brain for 17x Cheaper

In brief

• DeepClaude is a wrapper script that redirects Claude Code's API calls to cheaper Anthropic-compatible backends like DeepSeek V4 Pro.
• The repo claims roughly 17x cost savings versus Anthropic's $200-per-month Max plan.
• It launched weeks after Anthropic accidentally leaked Claude Code's full source code, fueling a wave of open clones and modifications.

A new open-source tool called DeepClaude lets developers run Claude Code—Anthropic's autonomous coding agent—with DeepSeek's model under the hood.

Pushed to GitHub by a developer going by aattaran, the project bills itself as the same Claude Code experience at "17x cheaper." It's a simple bash and PowerShell script — nothing fancy, no fork, no rewrite.

Using the tool, you can also run Claude Code with other backends like OpenRouter, or Fireworks AI—not just DeepSeek, though that’s apparently the main draw.

The trick is environment variables. Claude Code reads a handful of them to decide where to send API calls. DeepClaude rewrites those for the duration of a session, points them at a cheaper backend, then restores the originals when you exit.

The command line tool itself doesn't change. File reading, editing, bash execution, multi-step tool loops, subagent spawning, all of it still works. Only the model doing the thinking is different.

But the "tool loop" is the whole point of Claude Code. When you ask Claude to fix a bug, it doesn't answer in one shot. It reads files, runs commands, sees the output, decides what to do next, edits something, runs your tests, reads the failures, tries again. So it’s a process that involves thinking, acting, observing, thinking again, dozens of times, until the job is done.

That cycle is what people mean by "autonomous agent loop." You give one instruction, the model takes thirty steps. It's also the part that burns through tokens—and through your Anthropic budget.

DeepClaude keeps the loop intact and just swaps which model is making the decisions inside it.

The math is straightforward. Anthropic's Max 20x plan, which gives heavy users full Claude Code access, runs $200 a month. DeepSeek V4 Pro through OpenRouter currently costs $0.435 per million input tokens and $0.87 per million output—a promotional rate that expires May 31, 2026, after which it doubles. Even at full price, it's drastically cheaper than Anthropic's API.

By default, DeepClaude routes traffic to DeepSeek V4 Pro, the 1.6 trillion-parameter open-weight AI behemoth model that Hangzhou-based DeepSeek released on April 24. (Parameters, for the uninitiated, are what determine a model’s capacity—the more parameters, the wider the model’s breadth of knowledge.)