DeepSeek V4 vs Claude Code: 90% Cheaper, Same Quality

10 Claude Code DeepSeek V4 ——API 90%+

• Claude Code DeepSeek V4 Flash 1 / token
• Claude Code
• API

• Claude Code macOS / Linux
• DeepSeek 10

DeepSeek Claude Code

Claude Code AI Anthropic API ——Claude Sonnet 15 / tokenOpus DeepSeek V4 API Anthropic 5%-10% Claude Sonnet

Claude Code

1 DeepSeek API

DeepSeek 10

API KeysCreate API key sk- Claude Code DeepSeek

2

mkdir -p ~/.config/mg-deepseek && chmod 700 ~/.config/mg-deepseek

sk-your-key-here

echo 'export DEEPSEEK_API_KEY="sk-your-key-here"' > ~/.config/mg-deepseek/key.env
chmod 600 ~/.config/mg-deepseek/key.env
source ~/.config/mg-deepseek/key.env

700 600 API

3 Claude Code

Claude Code OAuth Vertex AIAWS Bedrock DeepSeek

cat > ~/.config/mg-deepseek/claude-deepseek-settings.json <<EOF
{
 "env": {
 "CLAUDE_CODE_USE_VERTEX": "",
 "ANTHROPIC_VERTEX_PROJECT_ID": "",
 "CLOUD_ML_REGION": "",
 "ANTHROPIC_DEFAULT_OPUS_MODEL": "",
 "ANTHROPIC_BASE_URL": "https://api.deepseek.com/anthropic",
 "ANTHROPIC_AUTH_TOKEN": "$DEEPSEEK_API_KEY",
 "ANTHROPIC_API_KEY": "$DEEPSEEK_API_KEY"
 }
}
EOF
chmod 600 ~/.config/mg-deepseek/claude-deepseek-settings.json

JSON

1. ** 4 ** Vertex AI AWS Bedrock
2. ANTHROPIC_BASE_URL API DeepSeek Anthropic https://api.deepseek.com/anthropic
3. ANTHROPIC_AUTH_TOKEN / ANTHROPIC_API_KEY

DeepSeek Anthropic API JSON Claude Code

4 Claude Code — DeepSeek

Claude Code DeepSeek

claude --bare \
 --settings ~/.config/mg-deepseek/claude-deepseek-settings.json \
 --model sonnet \
 " Python JWT REST API"

• --bare Claude Code OAuth settings ——
• --settings JSON
• **--model sonnet**Claude Code Anthropic DeepSeek sonnet→DeepSeek V4 Flash

Claude Code / /help``/bug``/review Claude Code

**** DeepSeek V4 Pro DeepSeek API Claude Code Flash

5

API DeepSeek

claude --bare --settings ~/.config/mg-deepseek/claude-deepseek-settings.json \
 --debug-file /tmp/check.log --model sonnet "SWAP_TEST"

grep "API REQUEST" /tmp/check.log | head -1

/anthropic/v1/messages DeepSeek /v1/projects/.../publishers/anthropic/ Vertex AI—— settings JSON 4 bedrock-runtime AWS Bedrock——

6

** 1 — Claude CodeAnthropic / Vertex / Bedrock**

claude --model opus ""

** 2 — DeepSeek **

claude --bare --settings ~/.config/mg-deepseek/claude-deepseek-settings.json \
 --model sonnet " async/await "

Claude Code settings

shell

# ~/.zshrc ~/.bashrc
alias claude-cheap='claude --bare --settings ~/.config/mg-deepseek/claude-deepseek-settings.json --model sonnet'

• claude-cheap "" → DeepSeek V4 Flash 1 / token
• claude "" → Opus Sonnet

shell

Q1auth conflict

Claude Code OAuth --bare

Q2 Anthropic

--debug-file

claude --bare --settings ~/.config/mg-deepseek/claude-deepseek-settings.json \
 --debug-file /tmp/check.log --model sonnet "test"
grep "API REQUEST" /tmp/check.log

URL deepseek.com JSON shell

Q3 ANTHROPIC_BASE_URL `.zshrc

Claude Code Vertex/Bedrock --bare --settings

Q4 --model sonnet `--model opus

Claude Code Anthropic DeepSeek sonnet → DeepSeek V4 Flashopus → DeepSeek V4 Pro deepseek-v4 Claude Code

Claude Code``DeepSeek``Anthropic``Vertex AI``AWS Bedrock``OpenAI

• DeepSeek API
• DeepSeek
• Claude Code

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Claude Code

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