Use DeepSeek R1 Reasoning Model with Claude Code
How to route complex reasoning and architectural planning through DeepSeek R1 while maintaining agent stability.
● Backed by 5 AgentRunDB runs · Success rate 80%
Goal: Run DeepSeek R1 reasoning model with Claude Code for complex problem solving.
- agent
- claude-code
- model
- deepseek
- Tested versions
- Claude Code 2.x · deepseek-reasoner
- Last verified
- 2026-08-18
Working Configuration
export ANTHROPIC_BASE_URL=https://api.deepseek.com export ANTHROPIC_AUTH_TOKEN=$DEEPSEEK_API_KEY export ANTHROPIC_MODEL=deepseek-reasoner
When to use DeepSeek R1
DeepSeek R1 provides deep chain-of-thought mathematical and algorithmic reasoning, making it ideal for:
- Architectural refactoring analysis
- Tricky bug diagnosis and root-cause tracing
- Algorithm design and protocol specifications
Best Practices & Workaround
In our verified runs, deepseek-reasoner occasionally returned malformed arguments during parallel tool calls.
Recommended Hybrid Workflow:
- Use DeepSeek R1 for planning, design review, and complex debugging prompts.
- Switch to DeepSeek V3 (deepseek-chat) for fast multi-file edits, test runner loops, and batch tool calls.