280ms duplex stream

⚡ get heysen

^ ω ^

{ ^-^ }

(¬_¬)

¯\_(ツ)_/¯

Hello

my name is

Hello

my name is

heysen-draw.mov

usecase.mov

it-draws-too-omg.mov

daddyshome.mov

nohandstricklol.mov

hello.mov

heysen

an ai buddy that lives on your computer

download for macsend it to me

free to try. sonoma 14.2 or higherfree to try on mac & windows

download for windows

free to try. windows 10 or higher

the dream

notes

we all have access to the same ai models, yet very few of us unlock their full power!

we just believe it's an interface problem.

we wanna take the same frontier models everyone else is using, and make it so this technology can break out of uninspired chat interfaces and clunky terminals.

we're trying to figure out the ai interface the next billion people will use.

it's early! try out what we have today and lmk what you think.|

Sentienta Team,Sentienta Technologies

feedback

they use it everydaythey use it everydaythey use it everydaythey use it everydaythey use it everyday

Greg Brockman@gdb

GPT Realtime 2 unlocks some real magic

5/30/26, 10:22 PM

144

2.7k

Josh Pigford@Shpigford

dear lord baby jesus please hide this from all the ai grifters so they don't ruin it.

4/27/26, 3:21 AM

154

joshua@4xiom_

black magic

5/30/26, 6:12 PM

William Wang@iamwilliamwang

Cool idea, been screenshotting and throwing images into Claude, this is the 10x version haha

4/6/26, 6:12 PM

151

Lenny Rachitsky@lennysan

My new favorite onboarding experience. So unique and engaging.

4/27/26, 1:51 PM

526

Belabbas Anis@0xBelabbaa

i will tell my kids that farza built this in a cave with a box of scraps

5/30/26, 8:01 PM

Aaron EpsteinY@aaron_epstein

Wild new @heysen demo just dropped 👀

6/16/26, 2:12 PM

102

Putri Karunia@putrikarunian

literally learning davinci resolve right now 👀, this looks awesome

4/6/26, 5:46 PM

Sharif Shameem@sharifshameem

can we actually get pakwan tomorrow

4/25/26, 11:39 PM

pricing

heysen, your way

three simple plans, cancel anytime.

free

see what the fuss is about.

best for hobby & testers

free forever, no card needed

start free

includes

25 talk messages a month

plenty of dictation

25 agent messages a month

community discord

student

affordable ai for learners.

best for students & builders

per month (~₹299/mo)

includes

unlimited voice talk

unlimited dictation

75 agent messages a month

screen perception & notes

popular

pro

talk & build as much as you want.

best for everyday professionals

per month (~₹1,199/mo)

includes

unlimited talk & dictation

250 agent messages a month

priority model routing

smooth bezier screen arcs

max

all the hands & autonomy you need.

best for power users & workflows

per month (~₹6,499/mo)

includes

unlimited talk & dictation

1,200 agent messages a month

parallel multi-window agents

vip priority support

< student discount >

if you're a student, get our dedicated student plan at just $3.99/mo (~₹299/mo) with unlimited voice talk, screen perception and dictation *

* open to new and existing subs.

latency_benchmark.sh

⚡ duplex streaming latency comparison 13.5x FASTER

                traditional serial companions (stt → llm → tts)
                3,850 ms
              
                standard cloud rest api
                1,920 ms
              
                ⚡ heysen directcomposition + aura
                280 ms

dynamic_model_router.ts

🧠 6-model task router roster SPECIALIZED DISPATCH

👁️ nemotron-3.5-super-vl
screen vision & ui coordinate pointing (~450ms)
⚡ nemotron-3.5-lightning
rapid push-to-talk voice dialogue (~180ms)
💻 cohere/north-mini-code
terminal scripts & syntax debug (~320ms)
📝 dots-3-note-preview
open document & tab summaries (~390ms)
🧭 xing4.0-29b-a4b
29B multi-step autonomous planning (~650ms)
🎯 respan/span-01-lite
instant validation & micro-actions (~140ms)

faq

frequently asked questions

what to know about heysen, privacy, and getting started.

what is heysen?

an ai buddy that lives on your mac or windows pc. press the hotkey and it sees what you see, so you can ask it anything out loud and it’ll walk you through whatever you’re working on, or say “heysen agent” and it’ll go do the task for you.

is my data private?

yes. we only see your screen when you press the hotkey, and screenshots are never stored. we do keep basic text summaries so heysen has context. you can delete your account and all its data in settings.

is heysen watching my screen all the time?

no. we never look at your screen unless you press the hotkey.

what can heysen actually do?

it teaches you any tool, walks you through whatever you’re stuck on, draws right on your screen to point the way, and runs agents to do tasks for you.

what’s the difference between talk and agents?

talk is the conversation. ask anything, out loud, as much as you want. agents are heysen actually doing tasks for you, and those are counted per month on each plan.

which apps does it work with?

anything on your screen. if you can see it, heysen can see it. no plugins or integrations needed.

does it work on mac and windows?

yes. heysen runs on mac (sonoma 14.2 or higher) and on windows 10 and 11. one account works on both. heysen for mac heysen for windows

is it free?

you can start for free. when you’re ready for more, student is $3.99/mo, pro is $14.99/mo, and max is $80/mo. cancel anytime.

what happens if i hit my agent limit?

talk keeps working, always. agent messages pause until your next cycle, or you can upgrade to max for 1,200 agent tasks a month.

can i cancel anytime?

yes. everything is month-to-month, no lock-in. cancel in one click and keep access through the end of your cycle.