Inter-exchange arbitrage is one of the few strategies in the cryptocurrency market where a trader does not need to predict the direction of the price. Earnings here are built on the difference in quotes for the same asset across different platforms. However, in practice, this approach runs into harsh reality: spreads rarely exceed tenths of a percent and exist for literally seconds. A person, even the most experienced one, physically cannot react to changes in the order book while analyzing numbers and placing orders.
This is exactly the problem that the Arbitron platform solves. The service automates the entire cycle of inter-exchange arbitrage, tracking the state of order books and funding rates on the 20 largest exchanges. The key feature is full delta neutrality: the platform simultaneously opens two opposing positions ("legs"), compensating for price risk. Assets remain on the user's trading accounts, not on the service's balance sheet.
Four obstacles on the path to real profit
The raw spread that any scanner shows is just the tip of the iceberg. Before actual profit, it is "eaten up" by four factors: taker fees on both legs, insufficient order book depth for the required volume, slippage during execution, and the speed at which the spread itself decays. A full cycle of two-legged arbitrage includes four market orders, and exchange fees play a decisive role here.
Speed as the main asset
Arbitron processes about 10,000 order books simultaneously, keeping the full order book in memory rather than just the best price. This is critical: at the top of the order book, there is often a tiny volume, and a real order for $500 or $1000 is executed at a completely different price. The platform calculates the volume-weighted average execution price for a specific volume in advance.
The infrastructure solution is also impressive. Each account receives a dedicated AWS server with its own static IP address in the region closest to the exchanges' engines. Measurements show that a request to Binance from Tokyo takes about 23 ms, while from Singapore it already takes 206 ms. A delay of 200–500 ms from another continent means your order arrives at an order book that has already changed beyond recognition, leading to slippage of 0.8% — several times more than the typical spread.
Backtest against illusions
Instead of the usual screener with "live" numbers, Arbitron offers a scanner based on a backtest with a 5-minute delay. The platform runs the last 8 hours of quotes through the same strategy as in real trading, taking into account the trader's individual fees and a specified execution delay (0.5, 1, or 2 seconds). This filters out "phantom" spreads that flash for fractions of a second and are unattainable in practice. Each opportunity receives a reliability rating from 0 to 100, considering market depth and the number of successful cycles in the past.
Protection against delisting and key security
Special attention deserves the delisting detection system — an event that can destroy capital instantly. The platform monitors official announcements from Binance, Bybit, Bitget, and OKX, checks the full list of instruments every 5 minutes, and reacts to a symbol disappearing from the feed. In the final hours before delisting, the spread widens by 5-10 times, and the platform recommends closing positions 24-48 hours before the shutdown.
The security model is built on the principle of non-custodiality. API keys are issued only with trading rights, without withdrawal rights. Keys are encrypted using an "envelope" scheme with AWS KMS and the AES-256-GCM algorithm, with each user having their own unique encryption key.
Monetization: commission only on profit
Arbitron's pricing structure is not tied to trading volume. The Scanner plan at $39 per month provides access to data and signals without automatic execution. The Trader plan at $99 adds a dedicated server, static IP, and up to 10 strategies, but charges 35% of realized profit. The flagship Prime plan at $299 (coming soon) reduces the commission to 30% and expands limits. A fundamental point: the commission is deducted weekly and only from a positive result. Losses are carried forward to future periods, and the platform receives nothing until the trader recovers past losses.
My analysis: Arbitron's approach to monetization is one of the most honest on the market. The "pay only when you earn" model aligns the interests of the platform and the user, and the emphasis on infrastructure speed and backtesting addresses the main pain points of manual arbitrage. However, it is worth remembering that even the most perfect automation does not eliminate market risks, and you should start with amounts you are willing to lose without catastrophic consequences for your portfolio.