Articles tagged "xAI"

**[Grok Build](https://x.ai/cli)** is xAI's official CLI coding agent, **released as early beta on May 14, 2026** ([official](https://x.ai/cli) / [Changelog](https://x.ai/build/changelog) / [npaka's Japanese note write-up](https://note.com/npaka/n/nd813d073196e)). Alongside Claude Code, Codex CLI, Gemini CLI, and [agmsg](../columns/agmsg-cross-agent-messaging-cli-ai-2026-06), Grok Build is **xAI's entry in the CLI coding-agent space**. Its key differentiators are **up to 8 parallel sub-agents isolated in separate Git worktrees**, a Plan-Review-Approve workflow, **ACP (Agent Client Protocol) + MCP servers**, and **local execution** (air-gap-compatible). **Model & pricing**: - Internal model: **grok-build-0.1** (256K context, API rates **$1.00/M input, $2.00/M output**); **Composer 2.5** for SuperGrok / X Premium+ - SWE-Bench Verified **70.8%** (vendor-reported; ~17 pts behind Claude Opus 4.7 87.6% and GPT-5.5 88.7%) - Access gated to **SuperGrok Heavy ($300/mo; $99/mo introductory promo)**, SuperGrok, and X Premium+ **Install**: `curl -fsSL https://x.ai/cli/install.sh | bash`. **Integrations**: AGENTS.md / plugins / hooks / Skills / **Plugin Marketplace (MongoDB / Vercel / Sentry / Chrome DevTools / Cloudflare / Superpowers)** / Agent Dashboard / `/goal` long-running autonomous mode / headless `-P` flag for CI/CD. **Strategic context**: the February 2026 **SpaceX × xAI merger**, SpaceX's disclosed **$60B acquisition option on Cursor**, and Composer 2.5 currently training on **Colossus**, xAI's in-house supercomputer — Grok Build sits inside an unusually vertically-integrated stack. **Caveats**: roughly **15× the price** of Claude Code / Codex CLI bundles ($20/mo); ~17 pts behind on SWE-Bench Verified; no IDE integration (terminal only); flagship demos such as Arena Mode remain unshipped. Where it wins: **Git-worktree parallelism, xAI ecosystem integration, and local execution**.

Nous Research's open-source self-improving AI agent Hermes Agent gained direct access to xAI's Grok subscriptions (including X Premium and SuperGrok) on May 15, 2026, plus an `x_search` tool that queries X posts, threads, and profiles via the xAI Responses API. This column reads the official sources to lay out how the two features actually work, what's authenticated against what, which Grok model variants are supported, and how the combination realistically fits into business workflows.

Complete guide to xAI's Grok TTS and STT APIs, officially bundled on April 17, 2026. TTS at $4.20/1M characters and STT at $0.10/hour (batch) undercut competitors by 60%. Grok STT achieves a 5.0% entity recognition error rate — the best in the industry. Covers API usage, benchmarks, and real-world use cases.