Rivo: research, testing and execution in one terminal
Rivo is built around one history of recorded trades on Kalshi and Polymarket. The live tape shows large trades as they print, with the Kalshi nickname or Polymarket wallet attached where the venue exposes it, and with exits filtered out so what you see is new positioning. Every identified trader has a profile: observed trades, wins and losses on settlement, a copy score from the last 90 days, and a flat-stake replay of their record so you can judge them at your size rather than theirs.
From there the workflow is test, then act. A strategy is a rule over the tape, scored against settled markets with an out-of-sample holdout, then saved as a paper strategy that keeps scoring live. Following a trader sends their trades to the inbox and Telegram in seconds. Connected trading places orders on either venue with a live quote first. Autopilot copies a followed trader's entries through your own Kalshi API key inside a per-trade and per-day cap, logs every copy and every skip with a reason, and pauses itself after repeated failures. The same Autopilot runs live on Polymarket US for US customers. A REST API and a remote MCP server expose all of it to Claude, ChatGPT, Cursor or your own code.
At $15 a month with nothing gated behind a higher tier, it is the cheapest paid option here and the only one that covers all four categories. What it is not: a general-purpose exchange front end, or a place to write arbitrary trigger logic against external data. See Kalshi Autopilot and pricing.
Kairos: a multi-venue terminal that is free to start
Kairos positions itself as a trading front end across Polymarket, Kalshi and Predict.fun, with news and market data alongside execution. Its comparison page describes native copy trading, a free Polymarket whale tracker with a $10,000 trade threshold, and public leaderboards with 30-day and all-time profit views. The product is free to start, which makes it the obvious choice when the main need is a single place to compare markets across venues and act.
What the reviewed page does not establish: a complete fee schedule, a historical backtesting workflow, or how trader identity is handled on Kalshi specifically. Verify the account model, current trading charges and automation caps for your venue before relying on it for execution.
Bot for Kalshi: write your own rules and let it host them
Bot for Kalshi is a rule engine rather than a tracker. Its $99 a month Complete plan covers a visual builder that turns a strategy description into conditions and actions, paper testing of those rules, and hosted operation so the rule runs without your machine. The product page describes user-defined position limits, daily-loss controls, activity receipts, and an explicit live activation step using your own Kalshi credentials. Its most developed workflows are Bitcoin and sports contracts.
It suits someone with a thesis they can express as a trigger: a price level, a time, an external data input. It is not a way to follow a specific trader, and the vendor's own copy-trading explainer is clear that anonymous Kalshi exchange flow cannot be mirrored as an account. Check that the contract type and data input you need are supported before subscribing.
WhaleTracks: a broad analytics suite with no execution
WhaleTracks publishes 20 tools for $49.99 a month, grouped into tracking, signals, market analysis and planning: scored-wallet feeds, watchlists, forward testing, consensus, market movers, arbitrage and overround scans, and position sizing. The site states plainly that it does not execute trades or hold funds. That makes it a research layer to run alongside a separate execution setup, and it covers both Polymarket and Kalshi, with some tools specific to one venue. Confirm venue coverage per tool for the ones you plan to lean on.