Which platform is better for a beginner?

Check the account and instruments available to you and the tasks you need to learn. This guide does not establish a universal beginner ranking.

Can MT5 run an EX4 EA?

No. EX4 is an MT4 artifact. Adapt available source and dependencies for MQL5 and validate behavior in MT5.

Does MQL4 support classes?

Yes. Its official documentation includes classes, inheritance, polymorphism, and other object-oriented features.

Is MT5 always faster?

Its tester can parallelize optimization passes and supports multi-symbol strategies. Runtime still depends on the EA, data, modelling mode, hardware, and configuration; no benchmark is provided here.

Is Depth of Market exclusive to MT5?

No. MT4 also documents a Depth of Market interface. Data availability and behavior depend on the platform, broker, and instrument.

Should I migrate an existing EA?

Evaluate required functionality, dependencies, account availability, and the cost of adapting and retesting it. A working MT4 program does not prove an equivalent MT5 program will behave identically.

MT4 vs MT5: Compatibility, Testing and Account Requirements

MT4 and MT5 are separate MetaQuotes platforms with different program artifacts, trade APIs, and testing capabilities. The appropriate choice depends on the broker account, instruments, and software you need to operate.

Key Takeaways

MQ4/EX4 programs are not drop-in MQ5/EX5 programs.
Both MQL4 and MQL5 support object-oriented programming.
MT5 supports multi-symbol testing and parallel optimization agents; actual runtime depends on the task.
MT4 has a Depth of Market interface too; inspect its data and controls rather than assuming identical exchange depth.

Start with the broker account and instruments

Check the broker’s actual platform offering, jurisdiction, account type, instrument specifications, and costs. MT5 supports exchange and multi-asset workflows, but a platform logo does not grant access to every market. MT4 can be used for broker-provided CFDs as well as forex. There is no evidence here that every forex broker supports either platform.

Compare the software you already depend on

MT4 uses MQL4 source and EX4 output; MT5 uses MQL5 source and EX5 output. Indicators, EAs, libraries, and account APIs can require adaptation. Shared calculation logic may be reusable, but order/position handling and indicator access need review. Both languages support classes and inheritance; MQL4 is not limited to procedural programming.

Compare the tester capabilities

MT5 supports multi-symbol EA tests, a built-in forward evaluation split, and parallel optimization passes using agents. These capabilities do not mean every individual test always finishes faster. Standard MT4 Every tick uses a model based on available bar history, so a 99% label is not proof of real-tick data or accurate fills. Align data, costs, inputs, and event timing before comparing reports.

Inspect account and order semantics

MT5 distinguishes orders, deals, and positions and can use netting or hedging accounts according to broker configuration. Ported logic must account for the selected mode rather than treating every order ticket as an independent position. MQL5 trade helper classes can wrap requests, but their use does not remove the need to inspect server results.

Check interface features directly

MT4 documents a Depth of Market interface; it is inaccurate to claim the feature is absent. The actual depth feed and order controls should be checked for the broker and instrument. Do not use invented four-versus-28 indicator limits or assumptions about what a beginner will find easier as the basis for a platform decision.

Plan migration as a new validation task

Inventory dependencies, preserve the original source and test evidence, adapt the program, and compile in the target MetaEditor. Compare signals, volumes, orders, and failure behavior on controlled cases before evaluating performance. Pineify’s Coding Agent can assist with the selected language, but a conversion is not an automatically equivalent or verified strategy.

Sources and verification

MQL4 object-oriented programming
Classes, inheritance, and polymorphism.
MT4 Depth of Market
MT4 interface and order controls.
MT5 Strategy Tester
Multi-symbol tests, optimization, and forward evaluation.

Related Resources

Build MT4 Expert Advisors with Pineify MT4 parameter optimization workflow Compare MT4 alternatives

This page is for informational purposes only and does not constitute investment advice. Trading forex and CFDs carries substantial risk of loss. Past performance does not guarantee future results. Always consult a qualified financial advisor before making trading decisions.