Cline on DeepSeek-V4-Pro: The 66K-Star Open-Source Coding Agent That Saves You Claude's Bill
cline/cline (66,095 stars, TypeScript, Apache-2.0, still pushed 2026-08-13) is an open-source autonomous coding agent whose Anthropic provider supports a custom base URL -> hook into DeepSeek-V4-Pro (api.deepseek.com/anthropic) as Claude. Pitfalls: interface compat ≠ capability equivalence (regression needed), thinking mode billed by default, DeepSeek price-hike warning.