Grok 4.5: SpaceXAI's Opus-Class Model Explained (2026 Guide)
Grok 4.5 is xAI's new Opus-class model — faster, more token-efficient, and lower cost. Specs, pricing, and how it compares to Claude Opus and GPT.
A collection of 6 posts
Grok 4.5 is xAI's new Opus-class model — faster, more token-efficient, and lower cost. Specs, pricing, and how it compares to Claude Opus and GPT.
xAI launched Grok Imagine Agent Mode on May 1, 2026 — an infinite-canvas creative agent that plans, generates, edits, and stitches 6-second video clips into longer films. Features, four templates, vs Sora and Veo, pricing, and API examples.
In a single month, xAI shipped a coding agent, a skills system, and a connectors layer. Here's how Grok Build 0.1, Grok Skills, and Platform Connectors fit together — and how the stack compares to Claude Code, Cursor, and Copilot Workspaces.
xAI's Grok 4.3 lands with a 1M token context window, native video input, and aggressive pricing at $1.25 input / $2.50 output per million tokens. Here is what changed from Grok 4.20, how it benchmarks against Claude Opus 4.7, GPT-5.5, and Gemini 3.1 Pro, and when it is the right tool to reach for.
Install and run Grok Build, xAI's new terminal coding agent: real install command, auth, Plan Mode, models, pricing, and how it stacks up.
The 2026 head-to-head: Grok 4.3 vs Claude Opus 4.7 vs Gemini 2.5 Pro on SWE-bench, LiveCodeBench, pricing, real coding workflows, IDE harnesses, and a clear pick-by-job-to-be-done framework.