How Jev made Reverbot faster

Jev sped up how quickly Reverbot reacts to your voice. It doesn’t write a single word you hear — it makes quick yes-or-no judgements about the words you’ve said, and the one that matters most is: have you finished?

So Reverbot answers sooner when you’re done, waits when you’re not, and no longer sits through a long, cautious silence first. Here’s how it works — and everywhere it helps.

What changed

Faster voice reaction

Sooner when you’re done

Jev can tell from your words that you’ve finished, so Reverbot answers without first waiting out a long pause.

Patient when you’re not

Stop mid-sentence and Jev can tell you aren’t done, so Reverbot gives you a moment more instead of cutting in.

A head start on your answer

Your question can go to the AI at the first short pause, so the answer is being written while Reverbot makes sure you’re done.

What Jev is

A very fast judge, not a writer

What Jev does

Jev is a split-second decision model made by TypeSafe AI. Reverbot hands it the words it has just heard and asks a yes-or-no question — most often “Has this person finished?” — and Jev answers with how sure it is, in about a third of a second.

What Jev never does

Jev never writes a word you hear — no answer, definition, translation or line. It never hears your voice, only the words your iPhone has already written down. Every word you hear still comes from the same AI as before, asked the same way. Jev only changes when it arrives.

The problem it solves

Is that a breath, or the end?

When you stop talking, a voice assistant has to decide whether you’re finished or just taking a breath. Your iPhone’s speech recognition can’t tell — it writes down words, not intentions. So before Jev, Reverbot had only two clues: how long you’d been quiet, and your last word.

“What’s the capital of…”pauseNot finished

“What’s the capital of Australia?”pauseFinished

“Tell me about the history of Rome and why it…”pauseNot finished

The same silence means different things. The first sentence gives itself away with its last word, “of”. The third doesn’t — “it” can end a sentence — so a last-word rule takes it as finished. Jev reads the whole sentence.

Wait too little and you get an answer to half a question; wait too long and every answer drags. Before Jev, Reverbot played it safe and waited out a long silence before responding — every time.

How it works

One question, at every pause

1 · You pause

A tenth of a secondOnce your words have stopped changing that long…

2 · Jev reads

Text only…the end of what you’ve said goes to Jev…

3 · Jev answers

About a third of a second later…with whether you’ve finished, and how sure it is.

“Finished”

At the default setting, Reverbot answers at once. Chosen a longer wait? It waits exactly that.

“Not finished”

You get one second more to carry on, whatever word you stopped on.

No answer in time

Reverbot waits out the pause you’ve set, and your last word decides — as it did before Jev.

It works the same way for a question, a word you want defined, a voice command and your turn talking to a soul. Jev is asked when your words stop, not on every word — and never twice about the same words.

Before and after

You hear the answer sooner

Before Jev, everything waited in line: first a long wait to be sure you’d finished, then the AI started writing, then the answer was turned into speech. Jev shortens the wait, because Reverbot no longer has to be cautious to be sure. And on Reverbot’s own AI your question goes out at the first short pause, so the answer is being written while Reverbot is still making sure you’re done.

Before Jev

Waiting to be sure

Voice

▶ you hear it

With Jev

Shorter wait

Voice

▶ you hear it

With Jev, on Reverbot’s own AI

Shorter wait

Voice

▶ you hear it

Waiting to be sure you’ve finished Jev tells Reverbot you’ve finished Your AI writes the answer It’s turned into speech Question sent early

Each row starts the moment you stop talking. An illustration, not a measurement: the AI and voice bars are drawn the same length in every row, because Jev changes neither — how long they take depends on your AI, your question and your connection. The early answer waits, unheard, until you’ve finished; when it will be read in Reverbot’s own voice, its first sentence is turned into speech while it waits.

Where you’ll notice it

One skill, all through the app

Jev does one kind of thing — quick yes-or-no judgements about words — and Reverbot puts it to work wherever a split-second call makes things better.

It knows when you’ve finished

Wherever Reverbot waits for you to finish, Jev tells it whether you have. Done, and Reverbot answers or acts at once at the default setting; stopped mid-thought, and you get a second more. It reads a question — in Questions, or wherever Answer questions too is on, in AI Meeting, translation or Custom Conversation — a word or phrase you want defined, a voice command and your reply when the assistant asks you something back, your turn when you talk to a soul, and the turns of a coached conversation, a rehearsal or Flirt in person.

Jev is asked: “Has this person finished?”

Questions
Answer questions too
Dictionary
Job
Personal Assistant
Home Control (coming soon)
Souls
Custom Conversation
Practice
Flirt

Your answer gets a head start

On Reverbot’s own AI, your question goes to the AI at the first short pause, alongside Jev’s check, so the answer is being written while Reverbot makes sure you’re done. It’s held, unheard, until you have finished — and when it will be read in Reverbot’s own voice, its first sentence is turned into speech while it waits. A word for Dictionary gets the same head start on your own key too; questions on your own key wait until you’ve finished.

Sent: at the first short pause, beside Jev’s check

Questions
Answer questions too
Dictionary

Your reply reaches them sooner

When Two-way translation can’t tell from the sound alone that it was you speaking, it finds out by translating: a sentence sent into your language comes back as already yours. Only then was your sentence translated for the other person — two trips, one after the other. Now, when your language is English, Jev checks whether you spoke English, and if you did, the translation for the other person is asked for at the same time. It’s used only where it always was, so it’s the same translation, just sooner; one that isn’t needed is thrown away unheard and never counts against your allowance.

Jev is asked: “Did they speak English?”

Two-way Language Translation

A soul that listens while you talk

Talking to a soul, Jev also judges whether a listener would make a small sound at a pause, and what kind. So the soul can say “mm-hm”, “oh no”, “ha” or “oh wow” at a natural beat, in its own voice, without taking your turn. They play only in your earbuds, never too often, and each soul has a switch for them.

Jev is asked: “Would a listener say something here — and is it sad, funny or surprising?”

Souls

A soul that notices who you’re talking to

With Realism on, Jev tells a soul when what you just said was for someone else in the room — ordering a coffee, answering a colleague. The soul says it’ll keep quiet, and does: what you say to them isn’t recorded or sent to its AI, only to Jev, to tell when you’re back. Turn back to it, or say its name, and it picks up again.

Jev is asked: “Was that said to someone else in the room?” · “Are they talking to me again?”

Souls with Realism

Help with the app — only when you ask

Any soul can help you with Reverbot itself, reading Reverbot’s Help to answer — but only when you’re really asking. Your phone first spots words that might be about the app, and only those go to Jev, which says whether you are. Everything else goes straight to the soul, and a soul never brings Help up on its own.

Jev is asked: “Are they asking for help using the app?”

Souls

Souls’ talks end when they’re done

When two of your souls get to know each other, Jev checks the talk once it’s under way, beside each new line, so it adds no wait. Once they’ve both said goodbye, or the talk has run its course, it stops there — sooner, and costing less on your AI key — instead of running on to the length you picked.

Jev is asked: “Has their conversation come to a natural close?”

Souls getting to know each other

The rule behind it

Same answers — only sooner

Jev changes when an answer arrives, never what it is.

Your answers

Jev never writes. Every answer, definition, translation and soul’s line comes from the same AI it would without Jev, asked exactly the same way.
Only for the identical request. An answer asked for early is used only if it was for exactly the same words, the same instructions, the same conversation so far and the same AI. Anything else is thrown away and asked afresh.
Nothing is said too soon. An early answer waits, unheard, until you’ve finished.
Thrown away unheard. An early answer that isn’t used is never played — and on Reverbot’s own AI it never counts against your allowance.

What Jev leaves alone

How translations end a sentence. Vicinity and Two-way translation still end each sentence on the pause after it, as they always have: ending sentences sooner would chop them up and change how they’re translated. Jev only sends your Two-way reply sooner.
A live rehearsal takes its turns by its voice partner’s own ear, as it always has.
Calls. Jev is never used on a phone call or a call between two Reverbot users — nor in the walkthrough, where nothing real is being said.

The one choice that’s yours. Each Silence duration before answering slider starts at Natural, in the middle. Move one toward Shortest and Reverbot answers sooner still — but near that end it may answer before you’ve finished, even mid-sentence, and the slider warns you. It’s the only place speed can change what gets answered, and only because you chose it.

Built never to slow you down

When Jev can’t help, it steps aside

A hard deadline. Reverbot never waits more than 1.1 seconds for Jev. If its answer hasn’t come by then, Reverbot carries on without it.
The old rule, as a safety net. Whenever Jev has no answer — it’s slow or down, or you haven’t agreed to it — Reverbot waits out the pause you’ve set, and a sentence that ends on a word nobody stops on (“the”, “of”, “is”) gets one second more: the rule it used before Jev.
Everything else, as it was. Without Jev, Two-way translation asks for its two translations one after the other; a soul listens quietly, doesn’t notice asides, and reads Help only when you name the app or its settings; and souls’ talks run to the length you picked.
At a pause, not on every word. Jev is asked when your words stop, and never twice about the same words.
A monthly safety limit. Each account’s use of Jev has a monthly cap. If one is ever reached, the app says so once, and Reverbot waits out the pause you’ve set until the month turns.

Your words

What Jev sees, and when

Text only. Jev reads the words your iPhone has already written down — never audio.
Only what Reverbot is about to act on. A question it heard; a word or phrase for Dictionary; a voice command (what you say after the wake phrase); what you say to a soul — with Realism on, beside the soul’s last line; the last lines of two souls getting to know each other; and in Two-way translation, the English recogniser’s words for each sentence. Never more than the last 1,200 characters, since every question is about how the words end.
Only after you agree. There’s no Jev switch — it’s part of how Reverbot listens — but it’s used only once you’ve agreed on the “Before we start” screen, which names TypeSafe, before any of your words leave the phone.
Passed on, not kept. The words go over an encrypted connection to Reverbot’s server, which passes them to TypeSafe; TypeSafe receives them under its own terms and privacy policy. Reverbot’s own server doesn’t keep them.
Never on phone calls.

The full details are in our Privacy Policy, under “Knowing when you’ve finished” →

Where the numbers come from

Every number on this page

Each is set in the app or was measured by Reverbot. How long an answer takes isn’t among them — that depends on your AI, your question and your connection — which is why the before-and-after drawing is an illustration, not a measurement.

A tenth of a secondHow long your words must stay still before Jev is asked about them. Set in the app.

About a third of a secondHow long Jev’s answer takes to come back through Reverbot’s server. Measured by Reverbot, September 2026.

1.1 secondsThe longest Reverbot waits for Jev’s answer before carrying on without it. Set in the app.

One secondThe extra time a sentence gets when you’ve stopped mid-thought — the only thing ever added to a slider’s wait, and the slider shows it. Set in the app.

1,200 charactersThe most of what was heard that’s ever sent to Jev — always the end of it. Set in the app and on Reverbot’s server.

Jev is an AI model made by TypeSafe AI, Inc. Reverbot is not affiliated with, sponsored or endorsed by TypeSafe. Jev sees only the text of what you say — never audio — only after you agree, and never on phone calls; it goes to TypeSafe under TypeSafe’s own terms and privacy policy, and Reverbot’s server doesn’t keep it. It isn’t used in every mode. The answer itself takes as long as your AI takes. Privacy Policy

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