Polymarket Arbitrage Bot: The 98¢ for $1 Strategy Explained

Polymarket arbitrage bot: the 98¢ for $1 idea

Buy $1 for 98¢. Repeat. Go to sleep. Wake up green. That is the pitch, and it is easy to see why this Polymarket bot case study caught attention. The bot is not trying to guess where Bitcoin goes. It watches both outcomes and waits for the numbers to break. But the viral version skips the hardest part: fees, real order-book prices, and half-fills. A two-cent gap can vanish fast. The AirdropBuzz Team breaks down the real math below.

Testing note: The AirdropBuzz Team reviewed the current Polymarket mechanics, fee rules, order types, onboarding flow, and the supplied case study. We did not run this bot with funded live capital, so we will not present the reported returns as our own test results.

What is Polymarket?

Polymarket is a prediction market where users trade shares tied to the outcomes of real-world events. A YES or NO share normally trades between $0 and $1. If your outcome wins when the market resolves, the winning share can redeem for $1 while the losing outcome goes to $0. Prices come from traders buying and selling against each other rather than from Polymarket setting the odds.

Behind the simple interface is a CLOB, short for Central Limit Order Book. Think of it as a live list of what buyers are willing to pay and what sellers are willing to accept. Trades are matched off-chain and settled through blockchain contracts. Polymarket currently uses pUSD as its collateral token. pUSD is backed by USDC on Polygon.

Polymarket was founded by Shayne Coplan, who remains its CEO. His public X profile identifies him as Polymarket CEO, his LinkedIn profile lists Polymarket, and recent reporting also identifies him as CEO.

How does Polymarket YES NO arbitrage work?

Imagine a market with only two possible results. One side eventually pays $1 and the other pays $0.

Now say the executable prices briefly look like this:

If you could buy one matching share of each outcome for exactly 98¢ with no other costs, one share would later be worth $1. The raw spread would be 2¢. You would not care whether Bitcoin finished up or down.

That is the clean version.

The real order book is messier. Polymarket's displayed probability is not always the price you can actually buy at. Buyers normally need to look at the available ask, meaning the lowest price at which somebody is willing to sell, plus how many shares are actually sitting there.

The problem with the viral 98¢ Polymarket strategy

Here is the part that changes the whole case study.

54¢ + 44¢ = 98¢ does not mean you currently pocket 2¢.

Polymarket now charges taker fees on fee-enabled crypto markets. A taker is the trader who grabs an order already sitting in the book. Current crypto taker fees follow this formula:

fee = shares × 0.07 × price × (1 - price)

Makers, meaning traders who place orders that sit in the book waiting to be matched, currently pay no maker fee.

Run the 54¢ + 44¢ example for 100 paired shares. The raw discount is $2.

So a $2 raw edge can become roughly a $1.46 loss before extra slippage when both legs are fee-paying taker trades. That is calculated from Polymarket's current published fee formula.

This does not mean the strategy is dead. It means the real rule cannot simply be:

YES + NO < $1

The rule needs to look more like:

YES executable cost + NO executable cost + fees + expected slippage < $1 - safety buffer

That one change separates a screenshot strategy from something you can actually test.

Polymarket bot case study: the reported $4,293 grind

The supplied case study describes a bot that watches short-window Bitcoin markets and waits for a mismatch between the two sides. It reportedly grew a smaller working balance into roughly $4,293, with a 63% hit rate and visible losing trades including losses around $109, $21, and $71.

The linked creator's mirrored channel later described the project as a Polymarket arbitrage bot that made roughly $4,000 in 10 days.

That shape matters. It is not a “10x by Friday” chart. The story is a staircase: small gains, occasional ugly steps backward, then more small gains.

PnL means profit and loss. It is simply the running score showing how much the strategy has made or lost.

The supplied case study also mentions total PnL above $294,000 linked to a public wallet. The wallet address was not included in the brief, and we could not reliably match that exact claim to a verified address. We will not guess which wallet it is. Treat the $294,000 number as a case-study claim unless the wallet can be matched directly.

That makes the reported losses even more useful than the headline profit. A true risk-free paired trade should not care which direction Bitcoin moves. Losses tell you that execution risk is getting into the system somewhere.

Why Polymarket YES and NO prices briefly break

The simple explanation is that order books are made by people and bots placing separate orders at separate prices.

One group may suddenly rush to buy one side. Another trader may cancel liquidity. A market maker may update one quote before the opposite quote changes. For a moment, the prices and available sizes can become uneven.

The bot does not need a theory about Bitcoin.

It needs four numbers:

• The executable YES price.
• The executable NO price.
• The amount available at each price.
• The full cost after fees and slippage.

If those numbers create a real net edge, the bot acts. If they do not, it waits.

That last part is underrated. A good arbitrage bot can spend most of its life doing absolutely nothing.

The Polymarket half-fill risk that can wreck the trade

This is the wound hiding inside the strategy.

Suppose your bot buys YES at 54¢.

Before it buys NO at 44¢, another trader takes the cheap NO liquidity. NO jumps to 49¢.

You now have a problem.

You are no longer running a neutral pair. You are holding YES by itself. You have accidentally made a directional Bitcoin trade.

Polymarket limit orders can partially fill, meaning only part of your requested trade may execute. The platform also supports FOK orders, short for Fill Or Kill. An FOK order must fill completely at the allowed price or it is cancelled.

FOK helps, but there is a catch: making each leg FOK does not magically turn two independent orders into one guaranteed two-leg transaction.

The one half-fill rule we would build first

Never allow an incomplete pair to become an intentional directional position.

The bot needs a kill-switch:

First leg fills → attempt second leg only inside max all-in cost → if second leg fails, cancel remaining orders and flatten the first leg under a preset loss limit.

Flatten means closing the unwanted position so you are no longer betting on direction.

This rule cannot promise zero loss. Nothing can guarantee that when markets are moving. Its job is to turn an uncontrolled Bitcoin bet into a small, defined execution loss.

Our Experience Joining Polymarket

The AirdropBuzz Team reviewed Polymarket's current signup, deposit, trading, fee, order-book, and API flows for this guide. We did not fund and run the case-study bot, so the profit numbers above are not AirdropBuzz results.

Joining itself is much simpler than building the bot. Eligible users can currently create an account through Google, email, or a supported crypto wallet. Wallet users sign messages to connect the wallet and enable trading.

Funding has more friction. You need to check the supported token, network, deposit address, and minimum deposit for that route. Sending assets over the wrong network can cause problems, so a small test transfer makes sense before moving more funds.

The biggest jump comes when you move from clicking trades to automating them. The API requires proper authentication, signed orders, price and size checks, error handling, and live position monitoring. This is not a two-button “passive income bot.”

Is Polymarket airdrop confirmed?

No Polymarket airdrop or token generation event has been announced in Polymarket's current official guidance. Polymarket warns users to be careful with fake token and airdrop claims. Its current collateral asset is pUSD, an ERC-20 token backed by USDC, but that is not a speculative Polymarket airdrop token.

That means using Polymarket today should make sense based on the product itself. Do not trade only because somebody on social media promises a future token allocation. Any future token, snapshot, eligibility formula, claim date, allocation, or TGE is TBA unless Polymarket announces it.

Time vs Reward: Is Polymarket Arbitrage Worth It?

The core idea takes five minutes to understand. Building something safe enough to trust with money does not.

Our documented grind review has seven major jobs before this becomes something we would trust unattended. Network speed is not the only issue. Competing bots, book depth, fee changes, cancelled orders, and your own code can all remove the edge.

We also will not invent a fake millisecond target. We have not measured this bot's live end-to-end execution latency ourselves.

The reward profile is also different from normal crypto speculation. You are hunting pennies, not rockets. That means capital efficiency, execution quality, and repeated clean fills matter more than finding one giant winner.

Risks & Things to Watch

1. Fees can turn an apparent win into a loss

The most important update is simple: calculate the trade after fees. Crypto taker fees can eat a small spread quickly. Makers currently pay no maker fee, but waiting for maker fills creates a different execution problem.

2. Displayed prices are not guaranteed execution prices

The number shown on the market page may be based on the bid-ask midpoint. The actual amount you pay depends on the order book. Check the ask and available depth for your exact size.

3. Half-fills create directional exposure

If only YES or only NO fills, you are suddenly betting on the event. The strategy's main risk control should focus on getting neutral again fast.

4. Cheap liquidity may be tiny

Seeing 98¢ for the pair does not mean you can buy $10,000 at 98¢. The order book may only offer a small number of shares at those prices. Polymarket warns that larger trades may move the price or fail to find enough counterparties.

5. More bots can kill the edge

If hundreds of traders watch the same mismatch, the cheap orders get taken faster. An edge based on obvious public prices often gets smaller as competition grows.

6. Geographic restrictions matter

Polymarket.com is not available for trading everywhere, and its restricted-country list can change. Polymarket also says users must not use VPNs to bypass geographic blocks. Check your eligibility before depositing funds. U.S. users are directed to the separate Polymarket US product rather than polymarket.com.

7. The case-study returns are not guaranteed

A bot that worked last week can stop working tomorrow. Liquidity changes. Fees change. Competing bots improve. APIs change. DYOR — do your own research — and test with money you can afford to lose.

Polymarket Arbitrage Bot FAQ

Does YES + NO below $1 guarantee a Polymarket arbitrage profit?

No. The raw prices are only the first check. You also need to include taker fees, slippage, available order-book depth, and the risk that only one side fills. A pair that appears to cost 98¢ can still lose money after costs.

What is the biggest risk with a Polymarket arbitrage bot?

The biggest risk is a half-fill. One side executes, the other disappears, and the bot is left holding a directional position. A good bot needs a strict timeout and flattening rule for incomplete pairs.

Can FOK orders remove Polymarket half-fill risk?

FOK, or Fill Or Kill, can require one individual order to fill completely or cancel. It does not guarantee that two separate YES and NO orders will both execute together, so pair-level risk controls are still needed.

Is the Polymarket airdrop confirmed?

No. Polymarket's current official guidance says it has not announced an airdrop or token generation event. Any future token, snapshot, allocation, eligibility rules, claim date, or reward amount remains TBA unless Polymarket announces it.

How much money do I need to test Polymarket arbitrage?

There is no magic starting balance. The safer approach is to begin with a small amount that lets you measure fills, fees, and slippage without putting meaningful capital at risk. The strategy depends more on execution quality than on starting big.