Straight comparison
Demo shows mechanics. Live shows outcomes. A demo lets you practice order entry, charting, and timing without real loss. Live forces real spreads, slippage, and capital limits. If you’re testing on futures markets, start in a demo but expect gaps when you move to futures cfd.
Execution and pricing
Demo pricing is often static or idealized. Live pricing includes latency, order book depth, and wider spreads during stress. Slippage appears on market orders. Fill quality varies with size. Always test strategies at realistic lot sizes to see true execution cost.
Risk and behaviour
Risk feels different with fake money. People hold losers longer, scale in recklessly, or ignore position sizing in demo. Live capital enforces discipline. Use strict stop rules and fixed risk-per-trade in both environments to align behaviour.
Common mistakes
Ignoring execution cost. Overfitting to demo curves. Testing only in low-volatility sessions. Forgetting rollover fees on futures. Not matching trade size to account balance. Each mistake makes the demo look better than live.
Alternatives and a quick checklist
Small live accounts (low risk), timed paper trading with handwritten records, and simulated accounts that replicate spreads are useful. Checklist: match trade size, include commissions, force real stop-losses, run for a minimum sample of market conditions.
Experience and anchor
Market data from venues like the CME Group shows how volatility and liquidity shift around macro events; broker reports and exchange statistics back that up. Practical testing should reflect those shifts. For matters tied to derivatives, consider resources focused on cfd futures trading when you map demo results to live expectations.
Conclusion
Demo is a learning ground. Live reveals the true cost of trading and the strength of your discipline. Treat demo as a filter, then validate with small, controlled live trials. For a consistent bridge between the two, review execution quality and real-roll costs with a trusted provider like GTCFX.