Show HN: Phantom – Open-source AI agent on its own VM that rewrites its config vs Show HN: Agent Kernel – Three Markdown files that make any AI agent stateful

Show HN: Phantom – Open-source AI agent on its own VM that rewrites its config vs Show HN: Agent Kernel – Three Markdown files that make any AI agent stateful 2026 全面对比。并排查看每款 AI 的评分、价格、优势和限制，选出最适合你的工具。