Telly Add to Chrome

If it’s a market,
ask Telly.

A Chrome extension for prediction markets — politics, economics, sport, anything that trades. Press ⌥T, ask, and Telly talks back — drawing on whatever it’s talking about. No dialogue box, no new tab.

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Chrome extension · v1.6, early

A man in a football helmet talking into a microphone in a drugstore aisle
312 asked this week Do these two add up to 100? Bulls 57¢ + Warriors 42¢ → 99¢ for 100¢ 86 asked today How does this one settle? FOMC statement only · a cut after 31 Mar settles No 604 asked this week Where’s this cheapest? Polymarket 51¢ · Kalshi 57¢ · 1.2k asked this week What moved this? The 11:40 injury note · 51¢ → 57¢ in 9 min 47 asked today How much is trading here? $2.4m traded · 11k trades · 2¢ spread

Where Telly runs

Works across every prediction market and sportsbook — and the news pages in between.

All the intel. None of the tabs.

Telly reads the page you’re on, so you never have to go and fetch the answer from somewhere else and carry it back.

Checking it yourself

7 tabs,
4 minutes

kalshipolymarketthe resolution rules the other bookvig calculatorthe news story that one forum

With Telly

One key,
four seconds

⌥T “compare the vig on this market”

Both sides are −110, so the book is holding 4.5%. Another book has the same spread at −105 — that’s 2.4%, a bit over half as much.

Two sides, one number

When two contracts are the same bet from opposite ends, Telly adds them up and tells you what the pair actually costs.

Base rates, counted

“3 of 97 settled contracts.” Every rate comes with its denominator, counted from things that have already settled.

It draws on the page

A box, an underline, a line between two contracts — drawn as it says the sentence that’s about them.

Out loud, both ways

You talk, it talks back — and subtitles itself, so you can still follow it with the sound off.

It never asks you to come to it.

No dashboard, no import, no account to link. Telly marks up the page that’s already open, then gets out of the way.

01

Press the key,
say the thing

0:04 “has this moved since open?” ⌥T to send
● spoken + subtitled
It opened at 51¢ and sat there until the 11:40 injury note. It’s 57¢ now — the whole move happened in nine minutes, and volume was 4× normal through it.

Press ⌥T and talk, then press it again to send. Telly answers out loud and subtitles itself on the page. You never leave the market you’re looking at — there’s no box to open and nothing to close.

02

It points at
what it means

beat 2 of 3 — marking both sides while it says them

Telly answers in beats. Each sentence marks the contracts it’s about — a box, an underline, a line drawn between two of them. It matches contracts by the words you can read, never by CSS, so a redesign doesn’t break it.

03

And it tells you
when it’s fine

✓ Nothing to do here

The 3-point gap between the spread and the moneyline is the market pricing a one-point Chicago win. 3 of 97 settled games in the data ended that way — 3.1%. The gap is about right.

one-point margins, 97 settled games

A tool that flags everything is noise. When a gap is just the market pricing something ordinary, Telly says so and stops talking. That’s the part that makes it worth leaving on.

Notetaker

Think out loud.
It writes it down.

Telly records you reasoning and transcribes it as you speak — and the part only an extension can do, it keeps the prices that were on screen while you said it. ⌥N opens the panel.

It stamps what you were looking at A transcript of someone reasoning about a price is worth far more next to the price — by the time anyone reads it back, the price has moved.
It files itself Notes group by what they were about: the event if Telly knew it, the site if not. Everything said about one market ends up together, and nobody files anything.
A price in a note stays historical The summary and the chat both carry the rule — never stated as current, never scored right or wrong after the fact.

Transcription goes to the same key as the rest of Telly. Share copies the note as markdown. Nothing is uploaded.

Five rules it can’t talk its way out of.

It never tells you what to buy +
Not a nudge, not a lean, not “I like this one.” The system prompt forbids it outright. Telly describes what’s on the screen and what the history says. The bet is yours.
It never says a price is wrong +
It’s pushed toward relationships that are arithmetic and checkable right there — two sides that should sum to 100, the steps in a ladder, how far a line sits from what has already happened — and toward saying when something looks ordinary.
It would rather miss than point at the wrong thing +
Contracts are matched by their text, never by CSS selectors, and the matcher refuses to map at all when two things on the page look equally like the same contract. A wrong mark is far worse than a missing one. If it can’t match anything it still answers — it just doesn’t point.
Play money is never quoted as money +
Manifold runs on mana, and Metaculus isn’t a market at all — nobody has money on those numbers. Telly calls them forecasts, never prices, never odds, never “the market,” and won’t line one up against a cash price as though they were the same claim. Futuur runs the same question in both, so it says which one a number came from every time.
Your keys never touch the page +
They live in chrome.storage.local on your machine. The background worker is the only thing that reads them, and every API call goes from there — never from the page you’re browsing.

We tried to build
the version that wins.

It didn’t survive contact with the data, so we didn’t ship it. The “this price is wrong” claim got swept across 97 settled contracts and came back empty. What’s left is the part that holds up: arithmetic between numbers already on your screen, and base rates counted from contracts that already settled. Both are checkable in seconds, and neither needs a model.

Arithmetic, not opinionTwo contracts on one screen whose asks add to 99¢ for something worth 100¢. That’s addition — and Telly will also tell you the fees probably eat it.
Counted, not modelledEvery rate comes with its denominator, from settled contracts you can go and look up.
Silence is an answerMost of the time the right output is “this is fine.” Telly is happy to say it.

Stop opening tabs.
Start asking.

Free while it’s early. Add it to Chrome, bring your own keys, open any market.

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Chrome extension · v1.6, early