MarkTechPost (Jul 15, 2026): Grok Build open-sourced under Apache 2.0 on GitHub (xai-org/grok-build).
- Covers agent harness, TUI, CLI, developer tooling
- Launched early beta May 25, 2026; understands codebase, edits, shell, web search, long-running tasks
- Comparison table: Apache 2.0 like Codex CLI; external PRs not accepted (unlike OpenCode MIT community)
- Practical notes: audit xai-grok-tools before shell in regulated repos; fork for internal harness; air-gapped via config.toml base_url; headless CI mode