Open-source coding agents like OpenCode, Cline, and Aider are solving a huge headache for developers

Open-source coding agents like OpenCode, Cline, and Aider are gaining traction as a model-agnostic layer that helps developers manage unpredictable LLM API costs. Unlike proprietary tools tied to a single provider, these agents connect to multiple model providers and API keys. OpenCode, built by the team behind SST, has grown to 117K GitHub stars and recently launched OpenCode Go, a $10/month subscription bundling access to cheaper Chinese AI models (GLM-5, Kimi K2.5, MiniMax M2.5). The low price point signals falling LLM inference costs. The piece also covers Anthropic's recent crackdown on third-party tools routing Claude Code subscriptions through external agents, and how OpenAI has kept its models accessible in third-party tools as competitive differentiation.