Get a second opinion on an AI answer

The answer sounds certain, but you cannot check it yourself. Before you rely on it, a second model may help you spot what needs checking.

The move is to put the same question to a second model from a different lab, then read the two answers against each other. It takes about twenty seconds. There is a way that keeps both answers and a way that destroys the one you already have, and the two sit next to each other in the same row of buttons.

Branch keeps both answers. Regenerate replaces one.

Under every reply there is a row of small buttons. Two of them re-run the question, and they do opposite things.

Branch copies the conversation up to that point into a fresh thread, then runs the model you choose there. The original thread is left exactly as it was. Two answers, two threads, both yours.

Regenerate re-runs the question in place. The first answer disappears the moment you tap it, the server deletes it, and there is no undo anywhere in the app. Everything after it in that thread goes with it.

For a second opinion, branch. Never regenerate. Regenerate is for when the first answer was junk and you want it gone.

The labels are swapped between web and phone

The icon is reliable. The word is not.

Branch is the small forking line, one path splitting into two. Regenerate is the circular arrow. Those two icons mean the same thing in every version of the app, on every screen.

The labels do not. In the web app, the branch menu is headed Try Again. On iOS and Android, Try again is the regenerate action, and branching is listed as Branch here.

Read that twice before you act on it. The same two words keep your answer on a laptop and delete it on a phone.

The web app will confirm which is which if you ask it. Hold the pointer over the forking icon and it reads "Create new thread with alternative response". Over the circular arrow it reads "Replace current response". A phone has no hover, so on mobile the safe target is the forking icon, and inside it, Branch here.

Three moves, and the third is the send

1. Under the answer you want checked, open the menu on the forking icon.

2. Pick a model. The list is grouped by provider and holds all 60 current models across 18 providers. Deprecated ones sit at the end. On a free account the paid ones are marked and will not open, which leaves 21 current models to choose from.

3. There is no separate send button. Choosing the model is the send. The app builds the new thread and the second model starts answering there.

Where the second answer lives

The new thread takes the original's name with "(Alternative)" added, so it is easy to spot in your list of chats.

There is no split screen and no compare view. Nothing appears next to anything. You read the two answers by moving between two threads, which means it pays to know what you are checking before you switch: the number, the recommendation, the one claim you doubted.

Getting back to the original is built in. On the web, a branched chat carries a small forking icon in the sidebar. Point at it for the parent chat's name, click it to jump there. On mobile, open the chat info sheet and the parent sits under "Branched from".

If the problem was your wording

Sometimes an answer goes sideways because the question had a hole in it, and a second model will fall into the same hole.

Tap your own message to edit it. Three buttons appear: Cancel, Branch and Save. Save rewrites the question and drops the answer you already have, along with everything after it. Branch keeps that answer and takes the reworded question into a new thread. Here the word Branch means the same thing on both platforms.

Nothing flags a disagreement for you

There is no consensus badge and no agreement meter. The app never compares the two answers and never notices when they conflict. Spotting the difference, and deciding what it means, is entirely on you.

What the app takes care of is the setup: same conversation, same history, one menu, no second tab open.

Worth the extra message?

Most questions are not worth branching. A branch is a send like any other. It costs what asking the question again would cost. A free account gets 50 messages every 24 hours.

Branch when the answer is about to leave your hands: a figure going into a document you will send, or a decision you would struggle to reverse. Money, health and the law all qualify. Branch also when a reply sounds more certain than the question deserves, especially where a date, a price or a rule could have moved since the model was trained.

Skip it for rewrites, brainstorming, formatting and first drafts you plan to rework anyway. You will catch those failures yourself.

When both models agree

Matching answers feel like confirmation. They are thinner evidence than they look.

Models learn from heavily overlapping text, so a mistake that is widespread on the open web tends to be widespread in both training sets. Two models can be wrong in the same direction, in the same calm voice, and the pair will look exactly like one right answer told twice.

That is the argument for crossing labs rather than crossing models. Two models from the same family share more of their upbringing, and they share their blind spots with it. Even across labs, agreement should move your confidence up a notch and stop there. If a question mattered enough to ask twice, it probably matters enough to check against a source with a date on it.

And if the two answers split, that is the more useful outcome. A disagreement is information about your question, and it is worth reading before you act on either answer.