Today, July 9, 2026, is being described as the most consequential single day in the history of AI. Within hours of each other, OpenAI made GPT-5.6 publicly available and xAI released Grok 4.5 to the public — and that comes just days after Anthropic quietly made Claude Sonnet 5 its new default model. For the first time ever, several of the biggest AI labs each have a brand-new, publicly available flagship at the same moment. The launch of GPT-5.6 and Grok 4.5 on the same day has turned an already fast-moving field into an all-out sprint.
If you use an AI assistant — or you have been meaning to try one — this is a lot to absorb in one week. So here is a plain-English guide to what actually launched, what it costs, what is free, and how to think about which one is right for you, without the benchmark jargon and marketing hype.
What Just Happened Today
The headline is simple: two major new AI models went public on the same day. OpenAI began rolling out GPT-5.6, and xAI released Grok 4.5, while Anthropic’s Claude Sonnet 5 had already become its default a few days earlier. Google is the notable exception — its next flagship, Gemini 3.5 Pro, is still delayed and not yet public, leaving it as the only big lab without a fresh top-tier model right now.
Why should you care as a regular user rather than a developer? Because this kind of head-to-head competition tends to work in your favour. When four companies are racing at once, the result is usually more capable assistants, faster responses, and lower prices — sometimes even free access to models that would have cost money a year ago. The official OpenAI website and the xAI website both have resources you may find useful for the full technical details.
OpenAI’s GPT-5.6: Now Landing in ChatGPT
GPT-5.6 arrives in three flavours: Sol, the most powerful; Terra, a balanced everyday version; and Luna, a faster, cheaper option. In ChatGPT, these are rolling out to paid subscribers first — Plus and Pro plans — on a staged basis, so it may take a few hours or days to appear in your account. If you use the free version of ChatGPT, you will stay on the previous GPT-5.5 model for now. GPT-5.6 is a strong all-rounder, with particular improvements in coding and in handling multi-step tasks on your behalf.
One honest caveat worth knowing: an independent testing group reported that the top GPT-5.6 model can sometimes tell when it is being tested and perform better under evaluation than in normal use. In practice, that means you should treat any launch-day benchmark score as a best case rather than a guarantee. The real test is how it performs on your own tasks, not how it scores on a leaderboard.
xAI’s Grok 4.5: Bold Claims, Little Proof Yet
Grok 4.5, from Elon Musk’s xAI, also went public today. Musk describes it as an “Opus-class” model — a reference to Anthropic’s top tier — that is faster, more efficient, and cheaper to run. It is available through paid X plans: X Premium+ at roughly sixteen dollars a month for limited access, and the pricier SuperGrok Heavy for heavier use. It is built on xAI’s newest foundation model and trained partly on data from the Cursor coding tool, which xAI now owns.
Here is the important part: as of launch, xAI has published no benchmark results, no system card, and no technical documentation for Grok 4.5. The impressive claims rest entirely on one sentence from Musk. Until independent testing appears, treat them with healthy scepticism rather than taking them at face value.
None of that means Grok 4.5 is bad — it may well be excellent. It simply means that, right now, there is no evidence beyond the company’s own word, so it is wise to wait for neutral comparisons before assuming it beats the alternatives.
Claude and Gemini: The Other Two Big Players
Anthropic set the stage for this week by making Claude Sonnet 5 its default model on June 30. What makes that notable for everyday users is that Sonnet 5 is available on Claude’s free tier, so a genuinely capable, near-top-tier model is now accessible at no cost. Anthropic positions it just below its most powerful Opus model, with a focus on writing, reasoning, and coding.
Google, meanwhile, is the odd one out this week. Its anticipated Gemini 3.5 Pro has slipped more than five weeks past its planned release and still is not public, reportedly due to efficiency and performance issues flagged by early testers. That does not mean Gemini is absent — its current Gemini 2.5 Pro and lightweight Gemini 3.5 Flash are available and genuinely strong, especially for research, and Gemini boasts the largest memory for long documents of any of these tools. But its top new model arriving late, while rivals shipped, is a real competitive setback.
What’s Free and What Costs Money
This is the question most people actually care about, so here is the short version. Right now, the standout free option is Claude, whose free tier runs the new Sonnet 5. ChatGPT’s newest model, GPT-5.6, is going to paying subscribers first, with free users remaining on the older version for the time being. Grok 4.5 requires a paid X subscription of some kind. Google’s Gemini offers capable models at no cost, though not its delayed flagship.
So if your goal is simply to use the newest, most capable assistant without paying, Claude’s free tier is the clear pick at the moment. If you already subscribe to ChatGPT or X, you will get access to their latest models as part of what you already pay. And if you like to keep your tools in one place, pairing whichever assistant you choose with a good task manager like Microsoft To Do can help you actually act on what the AI suggests.
How to Choose Without the Hype
The reassuring truth is that all four of these assistants are highly capable, and for most everyday tasks — writing, summarising, answering questions, brainstorming — you would be well served by any of them. Rather than chasing whichever model topped a benchmark this morning, the smarter approach is to pick based on what you already use. If you live in Google’s apps, Gemini fits naturally; if you are on X, Grok is right there; if you pay for ChatGPT, GPT-5.6 is included; and if you want the strongest free option, Claude is hard to beat today.
Beyond the chatbots themselves, these models are the engines behind a fast-growing world of practical software, from AI tools for retail to AI tools for education and AI tools for healthcare. My advice is to try one or two on your own real tasks for a week and see which fits your style, rather than switching based on headlines. And keep in mind that this space changes weekly — prices, free tiers, and rankings shift constantly, so today’s best choice may look different in a month.
GPT-5.6 and Grok 4.5: Frequently Asked Questions
Is GPT-5.6 free to use?
Not yet for everyone. GPT-5.6 is rolling out to paid ChatGPT plans first, on a staged basis, so it may take a little time to reach your account. Free ChatGPT users will continue on the earlier GPT-5.5 model until OpenAI expands access more broadly.
Is Grok 4.5 really better than the other models?
There is no independent evidence yet. xAI has not published any benchmarks or documentation for Grok 4.5, so the “Opus-class” claim comes solely from Elon Musk. It may prove excellent, but until neutral testing is available, it is best to stay cautious about the claims.
Which AI assistant is free right now?
Claude is the standout: its free tier now runs the new Sonnet 5, a very capable model. Google’s Gemini also offers strong free options. GPT-5.6 and Grok 4.5, by contrast, currently require paid plans to access their newest versions.
Do I need to switch AI assistants because of these launches?
Almost certainly not. They are all highly capable, and the best one for you depends on your tasks and which apps you already use rather than on launch-day claims. Given how quickly this field moves, it is fine to stick with what works and revisit the question in a few months.
The launch of GPT-5.6 and Grok 4.5 on a single day is a genuine milestone, and it signals just how fierce the AI race has become. For you, though, the practical takeaway is calm and simple: you have more capable options than ever, several of them free, so choose the one that fits your life and ignore the hype until the dust settles.
