PredictEngine is now Polymarket-first
PredictEngine's current public homepage focuses on Polymarket. It promotes a no-code builder, AI bot generation, copy trading, arbitrage scanning, hosted operation, and REST and MCP access. Earlier PredictEngine material discussed Kalshi analytics, but a buyer should use the current product page as the source of truth and confirm any Kalshi capability directly.
TurbineFi currently supports live workflows for Kalshi and Polymarket. That broader venue coverage is the clearest practical difference for a trader who wants to use the same strategy workspace across both markets.
Backtesting depth versus trading-tool breadth
TurbineFi centers its workflow on making a rule explicit, replaying supported historical data, and reviewing modeled fills, fees, drawdown, and trade logs before deployment. Historical coverage varies, and a backtest remains a simulation rather than evidence of future profit.
PredictEngine advertises testing as part of its packaged bot infrastructure, but its public homepage does not explain the historical window, fill model, fee assumptions, or supported strategy coverage. Its clearer strengths are product breadth within Polymarket: copy trading, cross-market scanning, hosted bots, a visual builder, and APIs. Ask to see the testing assumptions for the exact strategy you plan to run.
Pricing works differently
TurbineFi publishes plans at $19, $99, and $199 per month. Those plans meter deployments by week and month. PredictEngine publishes a free tier, a $19 Starter tier, and a $39 Pro tier, then uses credits for AI chat, bot generation, and hosting.
PredictEngine lists AI chat at 50 credits per message, bot generation at 250 credits, and hosting at 10 credits per hour. That can be inexpensive for light use, but the total depends on how often a trader iterates and how many bots run continuously. TurbineFi costs more at its higher tiers, while its public pricing is easier to evaluate by deployment allowance.
Wallets, hosting, and control
PredictEngine says a user creates a Polymarket wallet during signup and runs bots on PredictEngine infrastructure. It also says the wallet remains the user's. Traders should still ask where signing material is stored, what can access it during execution, and how account removal works.
TurbineFi deploys approved strategies to dedicated cloud runners using the trader's venue credentials. For Kalshi, the credential passes through TurbineFi for validation and provisioning but is not persisted in TurbineFi's application database. Any hosted bot needs runtime authority to place orders, so permission limits, revocation, monitoring, and shutdown checks matter on both platforms.