Signing Up for Claude: The Phone Number Is the Gate, and You Only Get One

Most guides to signing up for Claude describe an email, a confirmation link, and a password. Two of those three are wrong, and the step that actually stops people is not mentioned at all.

There is no password. Anthropic's own login documentation says plainly that it is not possible to create a dedicated password for a Claude account. And before you get anywhere near the chat window, you have to give a phone number, from a supported location, that can receive a text. That requirement is not optional, not skippable, and not reversible, and understanding its three edges saves most of the troubleshooting people do.

The phone rule, in the four sentences that matter

Anthropic publishes all of this on one help page, and each line has a consequence people discover the hard way.

• Phone verification is required for every new user and there is no way to skip it. That is the answer to the most-searched question on this topic, and it is a flat no.
• VoIP numbers, Google Voice, numbers created inside apps, and landlines are all rejected, along with anything else that cannot receive a text. If you have been retrying a signup form, this is the most likely reason, and it is not a fault you can retry your way out of.
• A maximum of three Claude accounts can be verified with the same number. The error people read as a bug, saying the number is already in use, usually means three accounts already sit behind it.
• The number cannot be changed once verified. There is no route back. Whatever you verify with is what that account is tied to permanently, so verify with a number you will still control in two years rather than the one in your hand.

The retry timing is published too: the code can take a few minutes, and after five you should reset the form and re-enter the number rather than keep waiting.

Region is a real gate, but it is not the one people hit

Anthropic lists just under two hundred countries, regions and territories where Claude is currently offered. That is broad enough that most people arriving at a signup failure are not actually blocked by geography.

The place region really bites is the phone step, because the number itself has to come from a supported location. So region and phone are not two separate obstacles to work through in order. They are the same obstacle, and it presents as a phone error rather than as a regional one. If you are somewhere unsupported, no amount of retrying the email form will help, and the workaround people reach for first, a virtual number, is specifically excluded by the rules above.

Logging in, permanently, without a password

This is worth internalising because it changes what an account even is here. There are two ways in: continue with Google, or continue with email, which sends a message titled as a secure login link. Click it on the same device and you are redirected straight in. Open it on a different device and you get a code to type instead.

Two things follow. First, the email is not a one-time signup step you clear and forget. It is the login mechanism, every time, so an inbox you might lose access to is an account you might lose access to. Second, there is no credential to write down, store, or hand to anyone. The thing that grants access to a Claude account is ongoing control of a mailbox, not a string.

If the link is not arriving, check spam and promotions before anything else, since several providers filter it by default, and request a fresh one rather than clicking an older link that may have expired.

Free, Pro and Max, described the way Anthropic describes them

Every specific number in this area moves, so the durable version is the shape rather than the figures.

Usage is measured in sessions, not days. Your session limit resets every five hours, which is a rolling window rather than a midnight reset, and it is why heavy afternoon use frees up in the evening without anything changing on your account. Paid plans add a weekly limit on top that applies across all models, so there are two clocks running, not one.

The tiers are relative to each other rather than absolute. Anthropic describes Pro as at least five times the usage per session compared with the free service, and Max as five or twenty times the Pro allowance depending on which Max tier you pick. Pro also carries priority access during high-traffic periods, which is the difference you notice on a busy weekday rather than at midnight.

What consumes the allowance is not the number of messages. Anthropic points at conversation length and complexity, which model you are using, and the effort level selected, and notes that long conversations which trigger automatic context management burn more, as do tools and connectors. The practical version: starting a fresh conversation for a new task costs you less than continuing an enormous one.

Prices and tier names change on their own schedule, so read the current ones on Anthropic's pricing page rather than in any article, including this one. The rule of thumb that survives: the free tier is enough to find out whether the tool fits your work, and the signal to upgrade is hitting the five-hour window repeatedly rather than any feature you are missing.

Why almost nobody sells Claude accounts

This is the part worth measuring rather than guessing at, so we did. Across this marketplace today there is exactly one live listing with Claude in its name, and it is not a Claude account. It is a Gmail inbox, sold on the email shelf, described as being able to receive Claude.ai messages. The Claude category itself holds nothing at all, and has never completed a single order.

That is not an accident of stock. It is the four rules above doing their work. There is no password to transfer. Access is ongoing control of an inbox, which means the only sellable asset is the inbox, which is precisely what the one live listing is. And with three accounts per phone number and no way to change that number, nobody can mint Claude accounts in volume the way they mint accounts on platforms that verify with email alone.

Three listings that tried this have since gone inactive: a monthly Pro subscription that required activation on your own email, a ready-made account advertised as phone verified, and an API token. The shape of the market is telling you something true about the product.

So if signup keeps failing, the answer is not a marketplace. It is checking which of the four phone rules you are hitting. What the marketplace can genuinely help with is the inbox side of it, since access lives in your mailbox permanently rather than in a password. A stable, deliverable mailbox you actually control is the durable part of a Claude account, and the Gmail accounts shelf is where that stock sits. For assistants that do have a transferable account market, ChatGPT account listings hold real stock and the wider AI account category shows how unevenly that is distributed across tools. If your interest in Claude is coding work, a GitHub account with history and two-factor enabled is what the agentic tooling actually authenticates against.