TL;DR: Grok 4 just dropped and it’s properly mental. After 24 hours of testing, it beats ChatGPT 4 in reasoning and coding, but ChatGPT still wins on speed. Pricing starts at £22/month. Full breakdown below.

Quick Facts About Grok 4 📊

Release Date: July 9, 2025
Best For: Complex reasoning, coding, maths problems
Price: £22/month (SuperGrok) or £222/month (Heavy)
Main Competitor: ChatGPT 4, Claude 4
Verdict: Wins for thinking tasks, loses on speed
Context Window: 256K tokens (bigger than most)
Special Feature: Multi-agent problem solving

Right, so yesterday I was knee-deep in WordPress code, fighting with a particularly stubborn CSS animation (you know the type), when my phone started buzzing like mad. Turned out xAI had just dropped Grok 4 during a livestream, and the AI world collectively lost its mind.

Elon Musk claims it’s the “world’s most powerful AI model.” Bold statement, right? But here’s the thing — after spending the last 24 hours putting it through its paces, I’m starting to think he might not be wrong.

“With respect to academic questions, Grok 4 is better than PhD level in every subject, no exceptions.” — Elon Musk, xAI Launch Livestream

My cat is currently eyeing me suspiciously as I type this. She knows I’ve been talking to AI more than humans lately.

The Moment Everything Changed 🚀

July 9th, 2025. Mark that date in your calendar, because that’s when AI just took another massive leap forward. I was actually updating our position zero SEO guide when the news broke. The irony wasn’t lost on me — here I was writing about optimising for AI search, and suddenly there’s a new AI sheriff in town.

xAI unveiled Grok 4 with all the fanfare of a tech conference keynote, complete with live demos that genuinely made my jaw drop. We’re talking about a model with a 256K token context window (that’s bloody massive), real-time web integration, and reasoning capabilities that apparently never get maths or physics questions wrong.

“Grok 4 is at the point where it essentially never gets math/physics exam questions wrong, unless they are skillfully adversarial.” — Elon Musk (@elonmusk)

Now, I’ve heard claims like this before. Remember when every AI was supposedly going to replace developers? Yeah, we’re still here. But this feels different.

What Makes Grok 4 Actually Special (Beyond the Hype) 🧠

Let me break down what’s genuinely impressive here, without the marketing fluff:

Advanced Reasoning That Actually Works I threw some complex engineering problems at it — the kind that aren’t in textbooks or Stack Overflow. Problems I’ve wrestled with on client projects. Grok 4 didn’t just solve them; it identified ambiguities I hadn’t even spotted and offered multiple solutions.

That’s… not normal. My cat could probably do better reasoning than most AIs, but this actually impressed me.

Multimodal Magic Remember when we were excited about AI that could look at images? Grok 4 generates up to four images simultaneously with progressive rendering. I tested it with our latest WordPress design trends brief, and the results were genuinely impressive.

Not perfect, but impressive. (I may have spent an embarrassing amount of time generating pictures of pelicans on bicycles just to test the limits.)

Real-Time Integration That Actually Matters Built-in web search, coding assistance, and voice mode. I know, I know — we’ve seen this before. But the implementation feels seamless in a way that previous attempts haven’t. It’s like having a ridiculously smart research assistant who never sleeps.

Meet Grok 4 Heavy: The Premium Beast 💰

Here’s where things get expensive. Alongside the standard Grok 4, xAI launched Grok 4 Heavy — think of it as Grok 4’s older, more sophisticated sibling who went to university and never lets you forget it.

At £222/month (roughly $300), it’s positioned as the premium option for enterprises and power users. The price made me wince initially, but when you consider that some of our clients spend more than that on coffee each month, it starts making sense for serious applications.

(My accountant is currently giving me the look. You know the one.)

What You Get for Your Money:

Enhanced performance with a larger context window
Multi-agent support (fancy talk for AI teamwork)
Superior logic-intensive problem handling
Early access to research agents and Python execution

The benchmarks are telling: Grok 4 Heavy scores 25% higher on complex reasoning tests compared to the base model. That’s not just a marginal improvement — that’s a different league entirely.

But here’s the really clever bit: Musk explained that Grok 4 Heavy spawns multiple agents to work on problems simultaneously, and then they all compare their work “like a study group” to find the best answer.

Basically, it’s like having a whole team of PhD students arguing about your problem until they reach the right conclusion. Expensive, but potentially brilliant.

The Great AI Showdown: Grok 4 vs ChatGPT 4 vs Claude 4 🥊

Deep breath. Right, let’s settle this properly. I’ve been using all three models extensively (my coffee consumption has tripled), and here’s what the benchmarks actually show:

Personal Confession: I may have talked to these AIs more than actual humans this week. My cat is judging me from across the room.

Metric	Grok 4	ChatGPT 4	Claude 4
Intelligence Index	73	70	64
Graduate-Level Problems (GPQA)	87-88%	86.4%	Lower*
Coding (LiveCodeBench)	79.4%	75.8%	Strong but slower
Speed (Tokens/second)	75	188	66-85
Context Window	256K	200K	200K
API Pricing (per M tokens)	£2.22/£11.10	£1.48/£5.92	£2.22/£11.10

*The asterisk on Claude 4 isn’t because I’m being diplomatic — it genuinely struggles in some areas where Grok 4 excels.

Where Grok 4 Actually Wins: Math and coding. Seriously, it achieved 95% on AIME 2025 and 100% on Harvard MIT Math tests. As someone who still uses a calculator for basic arithmetic, this is both impressive and mildly intimidating.

Where It Doesn’t: Speed. ChatGPT 4 is still the quickest off the mark, which matters when you’re building AI-powered content creation workflows for clients.

Real-World Testing: A Weekend With Grok 4 🕰️

I spent my weekend (yes, I’m that exciting) testing Grok 4 on actual client work. My cat judging me from across the room. Classic Saturday night.

Personal Confession: I may have talked to Grok 4 more than actual humans during this research. Here’s what happened:

The WordPress Plugin Challenge Remember our Grok 3 WordPress plugin experiment? I threw the same challenge at Grok 4.

Result: It not only solved the original problem but suggested three optimisations I hadn’t considered. Proper show-off behaviour.

SEO Content Creation I tested it against our AI SEO mastery techniques. The content quality was genuinely impressive — naturally readable, properly structured, and it actually understood semantic search principles.

Not bad for a machine. (Better than some humans I’ve worked with, if I’m being honest.)

The Coding Companion Test Grok 4 Code (the specialised variant) fixed a chunk of messy JavaScript I’d been avoiding for weeks. It didn’t just fix it; it explained why my original approach was dodgy and suggested a more elegant solution. I felt simultaneously grateful and slightly bruised in the ego department.

Pricing: The Reality Check 💸

Let’s talk money, because that’s what everyone’s really thinking about:

Basic Grok 4 Access:

£22/month for SuperGrok subscription
API rates: £2.22 per million input tokens, £11.10 per million output tokens
Doubles to £4.44/£22.20 beyond 128K tokens (ouch)

Grok 4 Heavy:

£222/month or £2,220/year for SuperGrok Heavy
Enterprise features and priority access
Exclusive research agents and advanced tools

For context, that puts Grok 4 Heavy at roughly the same price point as our comprehensive WordPress maintenance packages for eight months.

It’s expensive, but if it delivers on the productivity promises, it could pay for itself quickly. (My accountant is still giving me the look, though.)

So Which AI Actually Wins in 2025? 🏆

After extensive testing (and several late nights), here’s my honest take:

Spoiler alert: It’s complicated. Like, relationship-status-on-Facebook complicated.

Grok 4 wins for: Complex reasoning, coding challenges, and tasks that require deep thinking. It’s like having a brilliant graduate student who never gets tired.

ChatGPT 4 wins for: Speed, accessibility, and creative tasks. It’s the reliable workhorse that gets things done quickly.

Claude 4 wins for: Sustained coding projects and detailed analysis, though it can feel sluggish compared to the others.

The truth? The “best” AI depends entirely on what you’re trying to achieve. For our WordPress AI tools integration work, I’m finding myself reaching for different models for different tasks.

(Personal confession: I may have created spreadsheets comparing performance metrics. Don’t judge.)

What This Means for Your Business 💼

If you’re running a business and wondering whether to care about this AI arms race, here’s the straight answer: Yes, but not for the reasons you think.

It’s not about replacing your team (though some tasks will definitely get automated). It’s about amplifying what your people can do. The businesses that figure out this amplification first will have a significant advantage.

At McNeece, we’re already integrating these tools into our SEO services and WordPress development workflows. The productivity gains are genuine — we’re delivering better results faster, which means better value for our clients.

Personal McNeece Rating:

Technical Capability: 9/10 (Proper mental in the best way)
Value for Money: 7/10 (Expensive but potentially worth it)
Ease of Use: 8/10 (If you can handle the reasoning delays)
Client Impact: 8/10 (Game-changer for complex projects)

My cat gives it 3/10 because it’s stealing my attention from her dinner schedule.

Frequently Asked Questions

Is Grok 4 actually better than ChatGPT 4?

For reasoning-heavy tasks and coding, yes. For general chat and creative work, it’s more complex. Think of it as a specialist tool rather than a universal replacement.

Should I switch from ChatGPT to Grok 4?

Depends on your use case. If you’re doing complex analysis or coding, Grok 4 might be worth the switch. For general productivity, ChatGPT’s speed advantage still matters.

Is Grok 4 Heavy worth £240/month

For enterprises doing serious AI work, possibly. For small businesses, probably not yet. The basic Grok 4 offers most of the benefits at a fraction of the cost.

Will this replace human developers?

No, but it will change what developers do. Focus shifts from writing code to architecting solutions and managing AI workflows.

How does this affect SEO and content marketing?

Significantly. AI-generated content quality has jumped another level, but so has the need for human insight and strategy. The game is changing, not ending.

Learn more about our WordPress Hosting.

The Bottom Line 🎯

Grok 4 isn’t just another AI update — it’s a genuine leap forward in reasoning capabilities. While ChatGPT 4 remains the speed champion and Claude 4 excels in specific coding scenarios, Grok 4 has carved out a clear niche as the thinking person’s AI.

For businesses serious about leveraging AI (and willing to pay premium prices), Grok 4 Heavy offers capabilities that simply weren’t available six months ago. For everyone else, the basic Grok 4 provides enough power to be genuinely useful without breaking the bank.

The AI landscape just got more complicated, but also more interesting. And honestly? I’m excited to see where this goes next.

Personal Confession: I may have spent more time this weekend talking to AIs than actual humans. My cat is definitely judging my life choices.

If you’re diving into the AI rabbit hole, you might find these helpful:

Thinking about integrating AI into your WordPress site or SEO strategy? Let’s chat. We’ve been experimenting with these tools extensively and can help you navigate the options without the marketing fluff. Get in touch for a proper conversation about what might actually work for your business.

Grok 4 vs ChatGPT 4: Which AI Actually Wins in 2025?