My advice -- give it a try. Chuck $5 into deepseek.com , and use this config (put it in a shell script, run ' . ./deepseek-claude.sh ', then just run claude as normal.

    export ANTHROPIC_BASE_URL=https://api.deepseek.com/anthropic
    export ANTHROPIC_AUTH_TOKEN= *** PUT YOUR DEEPSEEK KEY HERE ***
    export ANTHROPIC_MODEL=deepseek-v4-pro
    export ANTHROPIC_DEFAULT_OPUS_MODEL=deepseek-v4-pro
    export ANTHROPIC_DEFAULT_SONNET_MODEL=deepseek-v4-pro
    export ANTHROPIC_DEFAULT_HAIKU_MODEL=deepseek-v4-flash
    export CLAUDE_CODE_SUBAGENT_MODEL=deepseek-v4-flash
    export CLAUDE_CODE_EFFORT_LEVEL=max