Traffic calls before the corner.
Cars alongside. A stopped car ahead. Your spotter keeps an eye on the traffic.
LE MANS ULTIMATE YOUR AI RACE ENGINEER
Your AI engineer.
Every race.
Live race calls and answers on your wheel’s radio button, built for Le Mans Ultimate.
Windows 10 / 11 Powered by Claude
APEX / REAL RACESEBRING · LAP 5 · P13 → P12
Real Le Mans Ultimate footage, sound off · Apex's actual calls from this race, 10 Oct 2026.
YOU’RE ON THE RADIOGo on.
Go on.
Ask your engineer.
Pick a moment from a real race at Sebring. See what Apex said.
TEAM RADIO 3.8 s response
YOU
DRIVER
Can we catch him?
APEX ENGINEER
Maybe, it's tight. You're 1.5 back, taking 0.4 a lap, and that's 3.8 laps with 4 left. Be patient.
Apex radio recording · Press play to listen.
APEX IN THE DRIVER’S SEATHear it.
Hear it.
In your kind of race.
Le Mans Ultimate. A real driver. Apex on the radio. Watch Apex on the radio in a real race.
LESS THINKING. MORE DRIVING.Know the gap.
Know the gap.
Plan your next move.
Apex reads the race data and calls out traffic, fuel and opportunities while you drive.
See all features ↗Fuel and energy to the flag.
Know if your fuel and virtual energy make the finish, and when to lift and coast.
A plan for the car ahead.
Hear where you’re quicker than the car ahead and where to attack or defend.
Quiet when you ask.
Say “shut up” or “back off”. Apex goes quiet straight away, keeping safety calls.
TAKE THE PIT WALLYour turn.
Your turn.
Make the call.
A quick challenge from the same real Sebring race. No account. Just you and a decision.
WEBSITE MINI-GAME · NOT LIVE TELEMETRYRACE MOMENT 01 / 020 calls nailed
The race ends around lap 12.
Your fuel makes the flag.
Would you plan to box on lap 30?
Set up your radio.
Then go racing.
Install on Windows, choose your push-to-talk button and start Le Mans Ultimate.
Get the app.
One Windows installer. Apex sits alongside Le Mans Ultimate on your PC.
Find your voice.
Choose your name, push-to-talk button, voice and how much Apex talks.
Go chase that lap.
Start LMU and head on track. Apex connects and talks you through the race.
BUILT BY A SIM RACERBuilt from
Built from
real team radio.
Gourav Tiwari built Apex with one mission: give every sim racer a real race engineer. The team studied 7,381 real Formula 1 radio clips to get the rhythm right. The calls put numbers first and keep answers short so you can concentrate.
The story behind Apex ↗Before you
hit the grid.
Which games does Apex support?
Le Mans Ultimate on Windows. It supports LMU today; no other games are listed as supported.
Does it work with a controller?
Yes. Setup asks whether you use a wheel or controller. You need a free button for push-to-talk and a microphone.
How do I make it stop talking?
Say “shut up”, “back off” or “let me drive”. Apex goes quiet at once, keeping safety calls. You can also choose the quiet talk level.
What does it send to the internet?
Push-to-talk audio becomes text on your PC. Your question and a short race summary, describing other cars by position, never by driver name, go to Apex’s server and Claude. Radio text goes to Microsoft speech services for the voice. Race feedback uploads are optional and opt-in.
Is a licence key required for the beta?
No. The open beta is free and needs no key. Claude answers your questions in 10 races; practice and qualifying never count, and the radio itself never stops. Claude answers up to 10 questions for each hour of a race (an hour's unused ones carry over), and 10 a day across practice and qualifying; after that the backup engineer answers. A race longer than an hour counts once for each hour started.
Your next race.
With an engineer.
Apex is free during open beta for Le Mans Ultimate on Windows.
Get the free betaAbout beta pricing ↗