DeepClaude open source explodes: Use DeepSeek V4 to run Claude Code, the cost is only 1/17

Core conclusion

On May 4, 2026, an open source project called DeepClaude quickly went viral on Hacker News (225 likes, 99+ comments). This project allows developers to use DeepSeek V4 Pro to run Claude Code's autonomous Agent loop - the core user experience remains unchanged, but the API cost plummets to 1/17 of the original. For teams that are using AI Agents in large quantities for automated development and content production, this may be one of the most practical money-saving solutions this year.

Key Points

• Event Time: 2026-05-04, Obtained 210+ Stars within 6 hours after the GitHub repository was released
• Core Change: DeepClaude makes DeepSeek V4 Pro a cheap inference backend for Claude Code Agent loops by being compatible with the Anthropic API format
• Influence Group: All independent developers, SaaS teams, and AI content producers who use Claude Code for automated development
• Cost comparison: Claude Opus 4.7 is about $15/ million tokens → DeepSeek V4 Pro is about $0.89/ million tokens, saving about 94%

Background and trigger events

DeepClaude is a lightweight open source tool released on GitHub by developer aattaran. It has only one core function: to enable Claude Code's autonomous Agent loop to run on any Anthropic API-compatible backend, including DeepSeek V4 Pro, OpenRouter, and custom endpoints.

Claude Code is one of the most mature AI programming agents currently, supporting autonomous execution of multi-step development tasks. However, it is bound to Anthropic’s Claude series models. For high-volume usage scenarios, API cost is the key bottleneck that determines whether it can be implemented on a large scale.

The principle of DeepClaude is not complicated - it starts a lightweight proxy layer locally to reroute API requests issued by Claude Code to DeepSeek V4 Pro or OpenRouter, while maintaining tool calling format compatibility. This means that developers do not need to modify any Claude Code configuration or workflow and only need to specify DeepClaude as the middle layer at startup.

Key Impact

Adaptation suggestions

If you are already using Claude Code for automated development, the following scenarios are most suitable for switching immediately:

• Batch Code Review: Perform automated reviews on multiple PRs, reducing the cost from $0.5 to $0.03 per order
• Automated test generation: A large number of test case generation tasks are not sensitive to latency, DeepSeek V4 Pro is fully capable of it
• Documentation and annotation completion: For pure text generation tasks, the gap between DeepSeek's inference quality and Claude's is extremely small
• Agent tasks in continuous integration: code analysis and recommendation tasks in the CI/CD pipeline

Quick start command

# DeepClaude
git clone https://github.com/aattaran/deepclaude
cd deepclaude
pip install -r requirements.txt

# （ DeepSeek V4 Pro）
export DEEPCLAUDE_API_KEY="your-deepseek-key"
export DEEPCLAUDE_MODEL="deepseek-v4-pro"
python deepclaude.py

# Claude Code

# Claude Code DeepClaude
claude

• GitHub: DeepClaude — 210 Star，13 commits in 6 hours
• Hacker News — 225 ，99
• DeepSeek V4 Pro

DeepSeek、Claude Code、Claude、OpenRouter. The platform side will automatically match the maintained tool library and display a floating information card on the front end.

Internal link guidance

• Want to learn how? Watch: Claude Code + DeepSeek V4 Building Tutorial: API Fees Dropped by 90% (15 Minutes) — a step-by-step guide to configuring DeepClaude
• Do you want to practice after studying? Watch: Claude Code 48 hours to start a business: one person + US$29 monthly fee, monthly income in 3 months $9,000 — Real cases teach you how to make money with Claude Code
• Recommended tool: DeepSeek V4 vs Claude Code: 90% Cheaper, Same Quality