Grok 4.5
Grok 4.5 is xAI's 1.5-trillion-parameter V9 model in private beta at SpaceX and Tesla, with supplemental training on Cursor coding data and early evals claiming performance near Claude Opus 4.8.
Articles Tagged "Grok"
Grok 4.5 Enters Beta with Unverified Opus Claims
Elon Musk announced Grok 4.5 is in private beta at SpaceX and Tesla, claiming it rivals Claude Opus - but the only benchmarks cited are internal ones run at Musk's own companies.
Grok 4.3 Review: xAI Bets on Price Over Prestige
Grok 4.3 slashes prices by up to 83%, adds native video input and voice cloning, and carves out a credible position as the most cost-efficient frontier model - with real caveats on coding and latency.
Grok Imagine Video 1.5
xAI's Grok Imagine Video 1.5 is the #1-ranked image-to-video model on Artificial Analysis, generating 720p clips with native audio at $0.14/s - 86% cheaper than Sora 2 Pro.
Grok Build Plugin Marketplace Launches With Six Tools
xAI ships an open plugin marketplace for Grok Build with six launch partners including MongoDB, Vercel, and Sentry, backed by SHA-pinned supply chain security and an open GitHub catalog.
xAI Engineer's Grok Safety Suit Clouds SpaceX IPO
A former xAI engineer filed a California whistleblower lawsuit claiming he was fired for warning that Grok could spread dangerous content - the day before SpaceX prices its historic $75B IPO.
Grok Build 0.1
Grok Build 0.1 is xAI's first model built specifically for agentic coding workflows, with a 256K context window, native MCP support, and always-on reasoning at $1/M input tokens.
Best Perplexity Alternatives in 2026: 7 Tools Compared
Seven Perplexity alternatives compared on citation quality, pricing, and research depth - from ChatGPT Search and Kagi to Grok DeepSearch and developer-focused Exa.
xAI Opens Grok 4.3 API: 83% Price Cut, Video Input
xAI opened Grok 4.3 to all API developers on May 6 with an 83% output price cut, 1M-token context, native video input, and document generation - plus five legacy models retiring May 15.
Musk Admits xAI Distilled OpenAI Models for Grok
Under oath in the Musk v. Altman trial, Musk said xAI 'partly' distilled OpenAI's models to train Grok - the same practice US labs have spent months calling theft when Chinese firms do it.
XChat Claims Encryption but Keys Sit on X's Servers
XChat launched April 24 promising end-to-end encryption, but security researchers found private keys stored on X's own servers, no certificate pinning, and a four-digit PIN as the only defense.
Grok 4.3
Grok 4.3 Beta adds native video input and document generation to xAI's flagship, with a confirmed 0.5T-parameter checkpoint and 2M-token context window, at $300/month for SuperGrok Heavy subscribers.
