xAI Launches Grok Build: Terminal Agent CLI with 2M-Token Context
xAI released Grok Build, a terminal CLI coding agent that reads repositories, proposes plans, edits files, runs shell commands, and self-checks via parallel sub-agents. The key differentiator is a 2-million-token context window — materially larger than current Claude Code context limits — enabling monorepo-scale work in a single session. Plan Mode requires user approval before execution. Currently in early beta, locked behind SuperGrok Heavy at $300 per month.
Why It Matters
The 2M-token context is the most meaningful spec differentiator in today's CLI agent market. The $300/month gate severely limits near-term adoption, but the benchmark will accelerate Anthropic and OpenAI to match or exceed it in their next context expansions.