Pace
An AI race engineer on your radio — not a chatbot
Pacedex listens to your race and speaks when it matters: pit windows, tyre life, undercut threats, rain, a spotter for cars alongside. Out loud, on your radio, while you drive — the way a real engineer works.
Race logic decides. A model only talks when you ask.
Most "AI engineers" pipe your data into a language model and hope for the best. Pacedex does the opposite: every proactive call is decided by deterministic race logic — dozens of triggers for strategy, tyres, fuel, weather, duels and damage. That's why the radio works offline, free, with no API key — and why it doesn't invent facts.
Discipline included: the engineer goes quiet on your flying laps, prioritizes safety calls, and re-checks every time-sensitive call the instant before speaking — if the fact changed (the gap closed, the safety car came out), the call dies in the queue instead of reaching your ears wrong.
Pit windows from real tyre wear, undercut and overcut threats, "worth pitting under the safety car?" with positions lost now vs later — and a rejoin projection cross-checked against the game's own simulation.
"Car left!" beats everything else on the radio, in real time. Danger ahead on your line — a slow car after the crest — gets called before you get there.
Active Aero zones, overtake boost, the per-lap energy harvest cap — the engineer coaches the new rules, and skips the laps where the safety car makes the numbers lie.
Natural-sounding voices in English, Portuguese, Spanish and Italian — running on your PC, no cloud. Pick the voice; the radio language is independent from the app's.
Optional push-to-talk: hold a key, ask "what's the gap doing?" and a model answers with your live race snapshot. This is the only part that uses a key — your own, never required for the radio.
Tyre life per compound per track, real pit-lane cost, your braking points — the more you race, the sharper the calls get. All stored locally.
Frequently asked
Do I need an API key?
No. The whole proactive radio runs on race logic built into the app — offline, free. A key (your own) is only for the optional push-to-talk questions.
Does it work offline?
Yes. Triggers and the neural voice run locally. No account, and your telemetry never leaves your PC.
Which languages does it speak?
English, Portuguese, Spanish and Italian — with a choice of neural voices.
Which games?
F1 24, F1 25 and the F1 25: 2026 Season Pack, including the 2026-only signals.
Put an engineer on your radio
Free beta · Windows · no account. Live overlay, voice race engineer and corner-by-corner analysis for F1 24/25/26.
Download free · Windows →Radio call examples above are real Pacedex calls, lightly edited for length.