Plain English in. Real Python out.
Describe the idea the way you’d say it. Premiss writes the strategy as working code you can read.
AI backtesting for trading ideas.
Describe a strategy. Premiss writes the Python, backtests it on years of market data, and keeps it running as a live bot.
Anyone can have an idea. Almost no one can test it. Premiss is the agent that turns the sentence into a tested strategy.
Everyone has the idea.
Almost no one has the evidence.
How it works
From sentence to backtest.
01
Just say the idea
Type it as you’d say it. No code, no formulas.
02
The AI writes real Python
Your strategy as working code, backtested on years of market data.
03
You see every trade
Every fill, every number, the full history of what your idea would have done.
Get to know Premiss.
An agent that shows its work.
It reads your idea, builds the strategy, runs it, and reports back with every step visible.
Every trade, on the record.
Each fill has a timestamp and a price. No black boxes. You can audit the whole run.
Years of history in seconds.
Backtests run on daily candles across full market history while you watch the results come in.
Paper trade it forward.
Take a promising backtest and keep it running on live prices, with every simulated decision and trade recorded.
Start free. Bring an idea.
The only thing Premiss needs from you is a sentence.
Backtesting
Run every idea at once.
Running now. 1,462 daily candles checked. The strategy is testing the next historical window.
68.4%completeResult ready. Every entry and exit is logged, so the bounce is more than a good looking chart.
+42.8%returnRunning now. Testing the one week hold after a 10% daily drop, fees included in every fill.
31.2%completeRunning now. Testing each profit target and the fallback exit against the same historical data.
14.6%completeUnder the hood
One sentence turned into code, trades, and an answer.
“Hold bitcoin while it’s above its 100-day average. Move to cash when it drops below.”
01 Wrote the code
# A real Python backtest, on real Binance candles. import pandas as pd px = load_candles("BTCUSDT", "1d") # 1,462 daily rows sma = px["close"].rolling(100).mean() # hold while above the 100-day line; cash when below pos = (px["close"] > sma).shift(1).fillna(0) ret = px["close"].pct_change().fillna(0) fees = pos.diff().abs() * 0.001 # 10 bps/switch eq = (1 + pos*ret - fees).cumprod()
02 Ran the trades
2021-01-05BUY$33,992
2021-05-16SELL$46,760
2021-08-09BUY$46,300
2021-12-06SELL$49,380
+ 3 more trades, each with its own timestamp and final price.
1,462
daily candles behind this example backtest
7
trades in the example run — every one logged
10 bps
per-switch fee modeled into the math
Every run leaves a record
you can go back to.
Examples
Pick an idea. Watch it run.
Choose an example and Premiss writes the code and backtests it.
Frequent questions
What is Premiss?
Premiss is an AI backtesting tool for crypto trading strategies. You describe a trading idea in plain language. It writes the Python, runs the backtest on years of real market data, and returns the code, the trades, and a verified result in seconds.
Is Premiss a crypto trading bot?
Premiss is the harness that builds one. You describe the strategy in plain language. Premiss writes the bot's Python, backtests it on years of real data, and can continue running it on live market data.
Do I need to know how to code to backtest a strategy?
No. Premiss requires no code. You describe the idea the way you would say it out loud, like “Hold bitcoin while it’s above its 100 day average,” and the AI writes and runs the Python backtest for you.
What data does Premiss backtest against?
Premiss backtests against historical crypto market data, including Binance candle data. You can inspect the generated code and the resulting trades, but historical data can’t reproduce every real world cost, delay, or market condition.
How is Premiss different from other backtesting software?
Traditional backtesting tools and strategy testers make you write the code or configure indicators by hand. Premiss is an AI backtester: it turns the sentence you typed into real, inspectable Python, so testing an idea takes seconds instead of evenings.
Can I paper trade a strategy after backtesting it?
Yes. A strategy that survives its backtest can keep running forward on live market data as a paper trade, recording each simulated decision and trade as new prices arrive.
Do backtest results predict future performance?
No. Backtests and paper trades are hypothetical examples based on past market data. They are not financial advice and don’t guarantee future performance. Review the code, assumptions, fees, and trades before relying on any result.
Is Premiss free?
Yes. Premiss is free to start, with daily credits for chatting and backtesting. No card required.
Free to start