Grok vs Claude: The Answer Flips When You Pay

Most comparisons of these two run the flagship models against each other and publish the scores. It is the wrong test for almost everyone reading, because the flagship is usually not the model you have. What you have is whatever your plan gives you, and the two companies have made opposite decisions about what a plan gives you.

So I did the boring version instead. I read xAI's plan comparison and Anthropic's plan comparison side by side on 17 September 2026, counted what each one puts in the free column, then checked the models named there against an independent benchmark. The answer came out backwards from the usual one, twice.

Free Grok gives you a better model than free Claude. Paid Claude gives you a better model than paid Grok. Both of those are true at the same time, and nobody writes them down because everybody is busy benchmarking the top of each lineup.

Update, 13 October 2026: On 12 October xAI replaced SuperGrok and X Premium with The X Subscription, xAI's new plan family, and closed the old plans to new sign-ups. The new ladder is Free, Plus at $8, Premium at $30, Super at $100 and Ultra at $200. Two findings below change with it. The new plan table no longer names a model for any plan, and Premium's card lists "Latest Grok models" among what it adds over Plus, so the free-tier finding now rests on the 17 September table. And Grok's cheapest paid plan now costs less than Claude Pro. I've updated Grok's prices, plans and terms. The benchmark figures and Anthropic's rows are still from 17 September.

The Short Answer: Grok vs Claude at Each Price

If this is you	Pick	Why
You are not paying anything	Grok, probably	On 17 September xAI's table ticked its current model for free users. The new one names no model. Anthropic's marks Opus No
You need what happened this morning	Grok	It searches X natively. Claude has no equivalent, at any price
You write long documents	Claude	A million tokens of context on paid plans against 500K, and it reads PDFs
You want the cheapest paid plan	Grok	Plus is $8 a month against Claude Pro's $20, without video or Grok Bot
You are paying about $20	Claude	Pro unlocks Opus at 51 on the intelligence index, past Grok's 44. Grok has no plan at $20
You generate images in the same chat	Grok	Claude's consumer comparison has no image generation row at all
You care about cost per finished task	Grok	$1.86 against $5.86 to complete the same benchmark set
You want a plan that does not train on you	Neither	Both reserve that for their business tiers
You want both halves	Neither, alone	See the last section

Everything under here is the working, with each figure read from a vendor page or a benchmark on 17 September 2026, and Grok's plans read again on 13 October.

What Every Grok vs Claude Comparison Gets Wrong

The genre has settled into one shape. Test the top model against the top model, arrive at "Claude for reasoning, Grok for real-time", stop. It is not wrong. It is just an answer to a question about two models rather than two products, and you are buying a product.

There is a second habit worth naming, because this is the one that costs money. These comparisons benchmark the models and skim the pricing pages, when the models are the part both companies hand out most freely and the pricing pages are where the two of them actually disagree.

Here is the part that actually decides it. xAI and Anthropic charge for different things:

• xAI sold volume. On 17 September its current model was ticked in every column of the comparison table, including Free, and the $30 plan bought higher rate limits, video generation, Grok Bot and Expert mode. The new plans still sell usage, as multiples of the $8 Plus plan, but Premium's card now lists "Latest Grok models" too.
• Anthropic sells the model. Opus is No on Free and Yes on Pro. Fable, the tier above Opus, is not really included even at $20, because Pro reaches it through usage credits billed at API rates.

One company has treated its best model as a loss leader and metered how much you can use it. The other treats the model as the product and puts the good one behind the till. That single difference explains almost everything people find confusing about these two.

How I Checked This

I read x.ai/pricing, the xAI privacy policy, xAI's consumer FAQ, the Grok documentation FAQ, X's Premium help page, claude.com/pricing and Anthropic's context window article, all on 17 September 2026. Both plan tables answer in ticks and dashes rather than words, which is easy to misread at a glance, so I checked the rows this post rests on twice. For the 13 October update I read x.ai/pricing again, along with xAI's launch post and help centre for The X Subscription and its consumer FAQ.

For capability I used the Artificial Analysis intelligence index, which is independent of both vendors, runs the same evaluation set on every model and publishes what each run cost. Benchmarks move. Prices and plan rows move faster, as the last section shows. Every number here carries the date I read it.

Where Each Company Puts the Paywall

Take the two comparison tables and line up what a non-paying person gets.

	Grok, Free	Claude, Free
Current frontier model	Ticked on 17 September. No model row since 12 October	No. Opus is Pro and up
Mid-tier model	Ticked on 17 September. No model row since 12 October	Yes, Sonnet and Haiku
Image generation	"Limited"	No row exists on any plan
Video generation	No	No row exists on any plan
Connectors	Yes, according to xAI's connector docs	Yes
Web search	"Limited" on 17 September. No search row since 12 October	Yes
Live social posts	"Limited" on 17 September. No search row since 12 October	Never, on any plan
Projects	Not a listed row	Up to 5
Published allowance	None published	None published

Two things jump out of that table.

The first is that xAI's free plan was unusually generous on capability on the 17 September table, and it's still silent on quantity, while Anthropic's is the reverse shape: honest about what you get, restrictive about which model you get it from. Anthropic states plainly that Pro gives "at least 5x more usage per 5-hour session than Free" and that there is "no fixed message count". xAI publishes no figure for free usage anywhere, which I went through in detail in the piece on Grok's limits.

The second is the image row. Claude has no image generation on any consumer plan, and Anthropic does not pretend otherwise. There is no row for it in the comparison at all. If generating a picture inside the same conversation matters to you, that is a settled question before you look at a single benchmark.

xAI's Pricing Page Argued With Itself Three Times

This one is worth doing carefully, because my whole free-tier claim rests on it.

On 17 September the SuperGrok card at $30 said: "Unleash the full power of Grok with higher rate limits and access to frontier models." Its first bullet was the current model by name. Its bullets also included image and video generation, and connectors.

The comparison table sitting directly underneath that card ticked the current model in the Free column. It ticked image generation in the Free column. It ticked connectors in the Free column, which was also a bullet on the free card two inches to the left.

So three of the seven things the $30 card advertised were, according to the table below it, already yours for nothing. The only one that held up was video, which was genuinely unticked for free users.

That is the table, read on 17 September 2026. The model row is ticked across all seven columns. Look at the Grok Bot row too, four lines down, because it was quietly strange: ticked for the three SuperGrok tiers, unticked for Business and Enterprise. The $30 consumer plan got a feature the company's business plans did not. The new table has fixed that one, and Grok Bot is now ticked from Premium up, Teams and Enterprise included.

I had no way to tell you which of those two page elements was correct, and neither did xAI, since its consumer FAQ and its documentation FAQ both declined to say which model the free plan serves. I checked Products and Models, Usage and Limits, and Billing and Subscriptions. Nothing. The table was the only place xAI committed to an answer, so the table is what I used.

The page xAI published on 12 October settles the argument in the card's favour. The new comparison table has no model row at all, and the $30 Premium card lists "Latest Grok models" among the things it adds over the $8 Plus plan. xAI still doesn't say which model Free and Plus run. So the free-tier finding below is a reading of the 17 September table. Check the model name in the Grok app before you rely on it.

If that sounds like a small thing, it is the same species of problem I hit on Anthropic's own pricing page, where the plan table and the help centre gave different answers about context. These pages are marketing assets that happen to be the only public specification of what you are buying, and they are maintained like marketing assets.

Grok vs Claude Free: Grok Has the Better Model

Here is the comparison nobody runs, because it requires caring which model is actually on the free tier.

Model	On which free plan	Intelligence index	Context
Grok's current model	Grok, Free	44	500K
Claude Sonnet	Claude, Free	38	1M, on paid plans

Scores from Artificial Analysis, checked 17 September 2026, out of a 199-model field where the median is 25. Both are well above that median. The gap between them is six points, which on this index is the difference between 21st place and 42nd.

I want to be careful about what this does and does not mean. It does not mean Grok writes better. It means that of the two models the vendors put in front of non-paying users, xAI's scores higher on a third-party reasoning benchmark. Allowance is a separate question, and xAI's free allowance is unpublished, marked web and X search as "Limited" on 17 September, and could be small enough to make the point academic. You will find out by using it, which is not a satisfying answer, but it is the true one. The same goes for the model itself now, since xAI's 12 October table stopped naming it.

Still, it inverts the received wisdom. The received wisdom is that Claude is the careful one and Grok is the fast, snarky one, so Claude must be the better free option for serious work. On the models each company hands out at $0, that is backwards.

What $20 to $30 Changes

Now pay, and it flips again.

Model	Plan	Index	Cost to finish the benchmark set	Speed
Claude Opus	Pro, $20/month	51	$5.86	50 tokens/sec
Grok's current model	SuperGrok, $30/month, now Grok Premium	44	$1.86	62 tokens/sec
Claude Sonnet	Free and up	38	$5.09	70 tokens/sec

Same source, same date. Grok 4.7 came out on 21 September, after these readings, and xAI's Premium card promises "Latest Grok models" without naming one. Three things in that table are worth sitting with.

Claude Pro buys a genuinely better model. Seven index points is a real gap, and Opus is the reason people who pay for Claude are usually happy about it. Anthropic's top tier, Fable, scores 53, but Pro subscribers reach it on usage credits at API rates rather than as part of the plan, which I covered in the Claude model tier breakdown.

Grok costs about a third as much to run. Artificial Analysis publishes the total cost of completing its evaluation set on each model. Grok finished for $1.86. Opus took $5.86, partly because it is priced at $5 and $25 per million tokens against Grok's $2 and $6, and partly because it wrote 140 million tokens to Grok's 94 million getting there. Opus thinks out loud more.

That cost gap is the mechanism behind everything above. A model that costs a third as much to serve is a model you can afford to put on a free tier. Anthropic cannot do the same thing with Opus at those rates, so it does not. The pricing structures are not philosophy, they are unit economics, and once you see that the rest of both pricing pages reads much more sensibly.

The subscription prices are where xAI's 12 October change matters most. Claude Pro is $20 a month, or $200 billed up front for a year that Anthropic advertises as $17 a month. Grok now has a plan on either side of it. Plus is $8 a month or $80 a year, and Premium is $30 a month or $300 a year. Until October, Claude was simply the cheaper subscription. Now Grok Plus is the cheapest paid plan of the two, though it has no video and no Grok Bot, and xAI doesn't say which model it runs. If you want what the $30 plan used to buy, video included, Claude Pro still costs $10 less. The full spread of Grok tiers is in how much Grok costs.

Grok Has Three Front Doors. Claude Has One.

This is the part I would want to know before subscribing to either, and I have not seen it on a single comparison page.

You can reach Grok three ways, and until October they were three different purchases:

• grok.com and the mobile apps. The X Subscription, from $8 for Plus to $200 for Ultra, with $30 Premium in between. Your terms for Grok are with SpaceXAI LLC, which is the company now behind Grok, and which the privacy policy describes as "a separate company from X Corp." xAI's pricing page says the subscription itself is sold by a third company, X Subscription Corp.
• Grok on X. Until 12 October this was X Premium+, $40 a month in the US, which included SuperGrok access and Grok Bot. Now the same X Subscription plan covers it, and xAI's launch post says your usage pool covers Grok "in the Grok apps, the Grok tab on X, or Cursor." xAI's consumer FAQ is explicit that this is still a different legal arrangement: "If you use Grok on X, please see the X help center for your questions. Your access on X is subject to the X Terms of Service and X Privacy Policy."
• The API. Pay per token, no subscription, non-refundable credits.

Read that middle option again. Since 12 October new customers pay one price on one bill wherever they use Grok, so the old $10 premium for the X door is gone. The terms split is not. Grok inside X still runs under X's terms and privacy policy, and xAI's FAQ sends you to X's help centre, not Grok's settings, to opt out of training for Grok on X.

There is also a data detail worth a sentence. If you sign into Grok with your X account, the privacy policy lists what X passes over at your direction, and the list ends with "whether you are subscribed to X Premium, and your Grok on X conversation history". Two of the three doors are joined at the back.

Claude has one door. One company, one privacy policy, one set of terms, whether you use the web app, the desktop app or the phone. For anyone putting client work into an assistant, that simplicity is worth something real, and it is the kind of thing that never shows up in a benchmark.

What Neither Subscription Buys

Both companies sell a private default. Neither sells it to you.

xAI's consumer FAQ says it may use your chats to train its models, gives you a setting called "Improve the model" to switch that off, and says it doesn't train on content from business and enterprise customers. On 17 September the plan table said the same thing in a row called No training, ticked for Business and Enterprise only. The new table drops that row and ticks team-wide privacy settings and custom chat data retention for Teams and Enterprise only. The $200-a-month Ultra plan does not get them.

Anthropic's table has a row called Model training. It prints Opt-out for Free, Pro, Max 5x and Max 20x alike, so the $200 plan is on the same footing as the $0 one. Switch to the Team and Enterprise tab and the same row reads None by default.

Two companies, opposite pricing philosophies, identical conclusion: individuals opt out, businesses are opted out, and the gap between those two things is a form you have to remember to fill in.

xAI adds a line I have not seen any other vendor print. The privacy policy, in the first sentence of the section on what it collects, asks you not to give it anything sensitive: "We ask that you do NOT include personal information in your prompts and inputs into our Service; however, we cannot control what you provide to us." I respect the candour. I also think most people who read it will be surprised, because it is not how any of these products are advertised.

Grok does give you a genuine control that runs the other way. Private Chat keeps a conversation out of your history and deletes it from xAI's systems within 30 days, with the usual legal and safety exceptions. Anthropic's equivalent is incognito chats, free on every plan. Both are per-conversation switches you have to remember, not defaults.

The Pages Moved While I Was Writing This

Three days before this post, I published a piece on whether Claude Pro is worth it. One of its findings was that Anthropic's plan comparison listed the context window as 200k for every consumer tier, from Free to $200 Max, while Anthropic's own help article said the newest models run at a million tokens on paid plans. I wrote that I would not build a workflow around a million tokens until the number appeared on the page you pay from.

It now does. On 17 September the row reads "Up to 1M, varies by model" in all four columns. The same table also now shows Projects as "Up to 5" for free users, where it had been a flat No.

Which is good news, and also a small warning about the other direction, because the help article did not change with it. That article is now titled "How large is the context window on paid Claude plans?", and it still scopes the million-token window to paid plans. The pricing table advertises it in the Free column. "Varies by model" is carrying the weight there, and the two pages have swapped which one is too generous.

I am flagging it because it is the honest lesson of writing these comparisons, and it applies to this one. Any piece like this is a photograph of a pricing page on the day someone looked at it. Mine included, and mine will age the same way. Check the date on whatever you are reading, then open the vendor's own table, because on this evidence a load-bearing row can move inside of 72 hours.

Which One Should You Use? Pick by the Job

Skipping the benchmark talk, here is where each one earns its place.

Use Grok when the answer depends on the last few hours. It reads live X posts natively, with citations, and no amount of prompting gets Claude to do that. Breaking news, what people are saying about a product launch, whether an outage is real or just your connection, how a story is being received. This is its one genuine monopoly among the big assistants and it is a bigger deal than the benchmark gap.

Use Grok when you want an image in the same thread. Claude has no answer here. Grok generates images on the free plan, and video from the $30 Premium plan up.

Use Claude for anything long. Reports, proposals, contracts, research summaries, a document you will still be editing next week. It takes PDFs directly, runs to a million tokens of context on paid plans against Grok's 500K, and keeps a consistent voice over thousands of words. If you are choosing an assistant mainly to write with, this is the one, and I would not pretend the decision is close.

Use Claude when the reasoning has to hold up. Seven index points is the measurable version. The felt version is that Opus is more willing to say the thing you asked for does not work.

Use Claude when one company, one policy matters. See the three doors above.

If the job is coursework, check the file before the model. Neither of these two accepts an audio upload, Claude stops reading the charts inside a PDF after page 100, and xAI publishes no upload limits at all. I put both of them against Gemini on those terms in Claude vs Grok vs Gemini for school.

The blunt version: Grok knows what happened this morning, Claude thinks more carefully about what it means. Those are different jobs and the split is stable enough to plan around.

The Version Where You Don't Choose

Everything above assumes you are picking one, which is the assumption the whole comparison genre is built on, and it is the weakest part of it. The free-tier flip and the paid-tier flip only matter if you are locked to one vendor's ladder.

That is what izzedo chat is for. Grok and the Claude lineup sit in the same model picker, in the same conversation, behind one login and one bill from $6 a month. That includes the Grok variant with native X search, which is the single strongest argument for Grok in this entire post, next to Claude's Opus and Sonnet tiers, which are the strongest argument for Claude.

Both vendors' lineups, one dropdown, one bill. So the workflow that reads as a compromise on one subscription is just normal here. Ask Grok with X search what is being said about something today, then switch models in the same thread and have Claude turn it into the brief, working from the same conversation it just watched. Neither vendor can do the second half of that, because neither of them sells the other one's model.

The free plan needs no card and covers the free model lineup. The paid plans from $6 a month are where Grok and the Claude tiers live, which is still less than either company charges for one of them. And a strict no-training policy with zero data retention by providers applies on every plan, including the free one, which as the section above established is not something $30 or $200 buys you anywhere else.

The habit worth stealing, whatever you use, is in not running one model on everything. Ask the second one when the first gives you something that matters.

The Bottom Line

Grok vs Claude has two correct answers and the price tag decides which one applies.

Not paying? Take Grok, probably. On 17 September xAI's own table handed free users its current model, which benchmarked six points above the best model Anthropic puts on its free tier, plus image generation and live X search that Claude does not offer at any price. The catch is that xAI has never published what "generous limits" means, and since 12 October it no longer says which model free users get.

Paying about $20? Take Claude. Pro unlocks Opus at 51 against Grok's 44, with double the context, native PDFs, and the better writing by a margin that no benchmark really captures. It is also $10 cheaper than Grok Premium, the cheapest Grok plan with video. If your budget is closer to $8, Grok Plus is the only paid plan of the two at that price.

Paying attention to the fine print? Neither plan stops the training, both companies have a business tier that does, and Grok has three front doors, one of them under X's terms and privacy policy, while Claude has one.

And if what you actually want is this morning's X conversation turned into a document that reads well next week, that is not a Grok decision or a Claude decision. It is a decision to stop treating them as alternatives.