Option Alpha alternative: testing before you automate

What Option Alpha is built for

Option Alpha's pages describe a rule-based builder: you pick or write a strategy, add entry and exit rules, backtest variations and run it as a bot. Bots trade live at TradeStation, Tradier or tastytrade, and you can paper trade inside the app without connecting a broker. It has a 30-day trial with no card, a paid Pro plan, and free access with a qualifying account at one of those three brokers; its pricing page has the details.

The pages we read do not say which option quotes the backtester uses, how far back they go, or how fills are priced. Those are the first things to ask before trusting any backtest, and the answers may well be in its documentation.

What Vesper is built for

Vesper is built for slower premium selling: cash-secured puts, put credit spreads and the wheel, 30 to 45 days out. You describe an idea in plain English, it shows the exact rule before running anything, replays it at the bid a seller receives on end-of-day option quotes from March 2022 (and on daily prices with a measured haircut back to 2016), scores it on years the rule was not tuned on, and shows the low end of the range rather than the average. A strategy you keep is then tracked forward on paper.

It never places an order and never connects to a broker, and it has a Free plan with no card to start. It works with end-of-day data only, so it cannot test intraday or 0DTE trades; our own 0DTE lesson is research, not a feature.

The differences that matter

Automation: Option Alpha's core is bots that trade for you. Vesper has none, so it suits someone who wants the decision and the order to stay their own.

Evidence before automation: a bot runs whatever rule it is given. Vesper's job is the step before that, telling you whether the rule would have earned more than cash, on years it was not tuned on, at the low end of the range. Registering a strategy also writes its rule and its verdict date to a public, append-only record before any forward result exists, so the result cannot be quietly re-scored later.

Paper trading: both offer it. In Vesper the paper record uses the same exit rule as the backtest, which matters more than it sounds, as our lesson on exit rules shows.

Which one to choose

If you already know your rules and want a bot to run them at your broker, Option Alpha is built for that. If you are still deciding which rules deserve money, Vesper is built for that question, and its Free plan costs nothing to try.

The two also work in sequence: test and paper trade an idea in Vesper, and automate it elsewhere only once its record has earned it. Whatever you use, size the live version for its worst month, not its average, as our position sizing guide explains.