On August 12, Grok 4.6 landed — and this time it's not just a footnote for Musk fans. xAI just pushed its newest model straight to the top of the AI rankings, while OpenAI, Anthropic, and Google are still digesting their own recent releases. According to several tracking services, around ten new models have already shipped in August 2026 alone. Welcome to AI's weekly release cycle.
What Grok 4.6 Can Do
On the Artificial Analysis Intelligence Index — one of the common benchmarks for comparing language models — Grok 4.6 lands almost neck-and-neck with GPT-5.6 Sol, just a hair behind Claude Fable 5. It makes a solid jump over Grok 4.5, especially in agentic coding (the AI handling multi-step coding tasks on its own) and in complex, multi-step tasks. On top of that, it ships with a 500,000-token context window — so you can throw a lot of text or code at it without the model forgetting where it started.
Bottom line: Grok 4.6 plays in the same technical league as the current flagship models from OpenAI and Anthropic. Just cheaper.
Side note: xAI has officially belonged to SpaceX since February 2026 — Elon Musk bundled his AI and space ambitions into one company. That changes nothing for you as a user, except maybe how eager investors are for good headlines.
What's Free — and What Costs Money
The good news first: chatting with Grok in text is free on grok.com and in the X app, no credit card and no X Premium subscription required. There's a message limit, but xAI doesn't publish the exact number — and it's been adjusted more than once this year. For casual use, it's plenty.
Where it gets pricier: since March 2026, image and video generation only work with a paid subscription — X Premium or SuperGrok. If you want to use Grok via the API — for your own projects or automations — pricing currently sits around $2 per million input tokens and $6 per million output tokens. Push that big context window to its limits, though, and it costs extra: past roughly 200,000 tokens per request, xAI switches to a noticeably higher rate. For comparison: it's still noticeably cheaper than similarly strong competitor models, even if "a million tokens" sounds abstract when you're just starting out (roughly: several hundred pages of text).
The Privacy Catch
Now for the part you should know before you start typing: by default, xAI uses your public X posts, your profile, and your Grok conversations to train its models — mainly for users outside the EU. If you don't want that, you can opt out in X's privacy settings. Data already collected doesn't disappear immediately, but future training can be stopped.
This isn't a Grok-exclusive drama — other platforms that run their own social networks do pretty much the same thing with user data. But if you've never wondered whether your old posts are now training material for a chatbot: now you know.
Is It for You?
If you're already on X and just want a quick, free AI answer now and then, Grok is an easy, no-friction option — no new account, no credit card, no detour. For developers looking for a cheap, top-tier model for coding agents, the API is worth a look right now.
If you'd rather play it safe with privacy or don't like dealing with X accounts, you have alternatives — just not permanently free ones. ChatGPT, Claude, and Le Chat all have free tiers too, but every one of them comes with real limits: a handful of requests, then it's wait or pay. That's not a rip-off. Every answer costs compute and electricity, and no AI provider is a charity.
The more interesting question isn't "what's free" anyway — it's "what does the ecosystem around it do". ChatGPT is strong the moment images enter the picture, Claude at programming, Gemini plugs straight into your Google account and photos, Grok into X. Pick the ecosystem you're already living in — day to day, that matters more than three points on some benchmark.