TL;DR
MetaTrader 5 replaced MetaTrader 4 as MetaQuotes' actively developed platform back in 2010, and by 2026 MT5 supports more asset classes, offers 21 chart timeframes instead of MT4's 9, and runs true multi-threaded backtesting, but MT4 remains the practical choice for forex traders locked into a broker or Expert Advisor library built specifically for MQL4.
Key Takeaways
- 1.MT4 uses MQL4 and is limited mostly to forex and CFDs; MT5 uses the more advanced, object-oriented MQL5 and supports stocks, futures, and commodities alongside forex.
- 2.MT5 offers 21 chart timeframes versus MT4's 9, plus an integrated economic calendar and Depth of Market that MT4 lacks natively.
- 3.MT5's Strategy Tester runs multi-threaded, multi-symbol backtests on real tick data; MT4's tester is single-threaded and noticeably slower on complex, multi-asset strategies.
- 4.MetaQuotes stopped actively developing MT4 years ago; MT5 is the only platform still receiving meaningful updates in 2026.
- 5.Many brokers still offer MT4 specifically because of large legacy Expert Advisor libraries built in MQL4, not because MT4 has technical advantages over MT5.
MetaTrader 5 is the better choice for most traders opening a fresh account in 2026: it supports more asset classes, more timeframes, and faster backtesting, and it's the only platform MetaQuotes still updates. MetaTrader 4 only makes sense today if your broker or an existing Expert Advisor library is built specifically around MQL4.
MetaTrader 4 launched in 2005 and became the default platform for retail forex trading for the better part of two decades. MetaQuotes released MetaTrader 5 in 2010 as a genuine successor, not a minor update, with a rebuilt architecture and a new scripting language. MT4 should have faded out within a few years of that release. It didn't, mainly because thousands of paid and free Expert Advisors, indicator libraries, and broker integrations were already built on MQL4, and rewriting all of that for MQL5 wasn't worth it for a lot of shops. That legacy lock-in, not any lingering technical edge, is the entire reason MT4 is still in the conversation in 2026.
This comparison walks through the actual feature differences, shows where each platform wins for algorithmic trading, and covers which brokers still support MT4 so you can pick the right one for how you actually trade.
Should I use MetaTrader 4 or MetaTrader 5 in 2026?
For a new account opened in 2026, choose MetaTrader 5. It's the platform MetaQuotes actively maintains, it covers stocks and futures alongside forex, and its Strategy Tester runs backtests noticeably faster on complex, multi-symbol strategies. The only real reason to pick MetaTrader 4 instead is that your broker's platform, or an Expert Advisor you already own, only supports MQL4.
If you're a pure forex trader who already has a working set of MT4 indicators and EAs and your broker still supports it, there's no urgent technical reason to migrate. Rewriting a proven MQL4 strategy into MQL5 is real work, and if it isn't broken, that migration cost can outweigh the benefit for a single-asset, forex-only account.
MetaQuotes has not added new features to MetaTrader 4 in years; every meaningful platform update since 2010 has shipped to MetaTrader 5 first, and most of them exclusively.
What is the main difference between MT4 and MT5?
The core difference is scope. MT4 was built around one job: forex and CFD trading, with a simple, procedural scripting language (MQL4) that's easy to pick up but limited for complex logic. MT5 was built as a multi-asset platform from the ground up, with a 64-bit, multi-threaded architecture and an object-oriented scripting language (MQL5) that supports more advanced calculations and cleaner code organization for larger Expert Advisors.
Account structure also differs. MT4 exclusively uses hedging-style accounts, where you can hold long and short positions on the same symbol at once. MT5 defaults to netting-style accounts, where opposing orders on the same symbol offset each other, though many brokers now offer an MT5 hedging mode as well. This matters directly for certain grid and hedging Expert Advisor strategies, which need to be checked against your specific MT5 account type before deployment.
MetaTrader 5 supports virtually unlimited trading instruments across forex, stocks, futures, and commodities, while MetaTrader 4 remains built primarily around a single asset class: currency pairs and CFDs.
MetaTrader 5 vs MetaTrader 4: feature comparison
| Feature | MetaTrader 4 | MetaTrader 5 |
|---|---|---|
| Scripting language | MQL4, procedural, easier learning curve | MQL5, object-oriented, handles complex logic better |
| Chart timeframes | 9 | 21 |
| Asset classes | Forex and CFDs | Forex, stocks, futures, commodities, and CFDs |
| Backtesting | Single-threaded strategy tester | Multi-threaded, multi-symbol tester on real tick data |
| Order types | 4 pending order types | 6 pending order types plus stop-limit orders |
| Economic calendar | Not built in | Built in |
| Depth of Market | Not available | Available on supported symbols |
| Account types | Hedging only | Netting by default, hedging mode on some brokers |
| Active development | Discontinued in practice | Ongoing as of 2026 |
Every row in that table points the same direction on raw capability: MT5 is the more complete platform in 2026, with the single practical exception of MT4's larger installed base of pre-built, forex-specific Expert Advisors.
Which platform is better for algorithmic trading and Expert Advisors?
For building new Expert Advisors from scratch in 2026, MT5 wins on technical merit. MQL5's object-oriented structure makes larger, more complex strategies easier to maintain, and the multi-threaded Strategy Tester can backtest a multi-symbol portfolio strategy in a fraction of the time MT4's single-threaded tester needs for the same job. That speed difference compounds fast once you're optimizing a strategy across dozens of parameter combinations.
Check the account type before deploying a hedging EA
If an Expert Advisor relies on holding simultaneous long and short positions on the same symbol, confirm your MT5 account is set to hedging mode first. On a netting account, those opposing orders will offset instead of running side by side, which silently breaks the strategy's logic.
MT4 still has the deeper library of existing, battle-tested Expert Advisors and indicators, many of which were built and refined over a decade or more. If a specific paid EA you want only ships an MQL4 version, that alone can decide the platform choice for you, technical merits aside.
MT5's multi-threaded Strategy Tester can run a multi-symbol backtest in a fraction of the time MT4's single-threaded tester needs, which matters most once a strategy is being optimized across many parameter combinations rather than tested once.
Which brokers still support MetaTrader 4 in 2026?
Most major forex-focused brokers continue to offer MT4 alongside MT5 rather than dropping it outright, purely because a meaningful share of their existing client base still trades on MT4-native Expert Advisors and doesn't want to migrate. New account promotions and platform defaults, though, have shifted toward MT5 across the industry over the past several years.
If you're opening a new account and have no existing MT4 dependency, check whether the broker even still lists MT4 as an option before assuming it's available. Some brokers have quietly stopped onboarding new MT4 accounts while continuing to support existing ones, which can catch new traders off guard mid-signup.
Broker support for MT4 in 2026 is a legacy decision driven by existing client Expert Advisor libraries, not a signal that MT4 is technically comparable to MT5 for new development.
Mobile apps and everyday usability
Both platforms ship free mobile apps for iOS and Android that mirror most of the desktop functionality: live charting, order placement, and account monitoring. The MT5 mobile app carries over the extra timeframes and order types from the desktop version, while the MT4 app stays limited to the same 9 timeframes and 4 pending order types as its desktop counterpart. Neither app supports full Expert Advisor development on the phone itself, so serious algorithmic work still happens on desktop regardless of which version you run.
On the desktop side, the two interfaces look nearly identical at first glance, which is intentional. MetaQuotes designed MT5 so an experienced MT4 user could switch platforms without relearning the basic chart layout, order panel, or navigator window. The extra depth in MT5, the economic calendar tab, the wider indicator list, the Depth of Market panel, shows up as additional menu options rather than a redesigned workflow, which keeps the learning curve for the interface itself fairly shallow even though the scripting language underneath is more advanced.
Neither platform requires new users to relearn the basic chart and order-entry workflow, which is the main reason MT5 adoption has grown steadily since 2010 without a steep interface learning curve slowing it down.
How do I migrate an Expert Advisor from MT4 to MT5?
Moving a working strategy from MQL4 to MQL5 is a real project, not a file conversion. Here's the process most developers follow:
Migrating an EA from MT4 to MT5
- 1
Document the original logic
Write out the entry, exit, and risk rules in plain language before touching any code, so you have a reference independent of the MQL4 syntax.
- 2
Map MQL4 functions to MQL5 equivalents
Many core functions were renamed or restructured between versions. Order placement, in particular, moved from a simple function call in MQL4 to a more structured trade request object in MQL5.
- 3
Rebuild using MQL5's object-oriented structure
Rather than a direct line-by-line port, most experienced developers rewrite the EA using MQL5 classes, which pays off if you plan to extend the strategy later.
- 4
Confirm the account type
Decide whether the strategy needs a hedging or netting account on MT5, and set that up with your broker before testing, since it changes how positions on the same symbol behave.
- 5
Backtest on real tick data
Run the rebuilt strategy through MT5's Strategy Tester using real tick data rather than the faster but less accurate simulated modes, to catch execution differences early.
- 6
Run it in parallel before switching over
Keep the MT4 version live on a demo or small account while the MT5 version runs alongside it for a few weeks, comparing fills and results before fully retiring the original.
Budget real time for this migration; a moderately complex EA with custom indicators commonly takes a few days of focused rewriting rather than a quick afternoon conversion, which is exactly why so many traders and brokers have simply kept running MT4 in parallel instead of migrating everything at once.
MT4 vs MT5 pros and cons
MetaTrader 4
Pros
- Simple, procedural MQL4 language with a shallow learning curve
- The largest library of existing, pre-built Expert Advisors and indicators
- Lightweight and fast on older or lower-spec hardware
- Still the default platform at many long-established forex brokers
Cons
- No new features from MetaQuotes in years
- Limited to forex and CFDs, with only 9 chart timeframes
- Single-threaded backtesting is slow on complex, multi-symbol strategies
- No built-in economic calendar or Depth of Market
MetaTrader 5
Pros
- Actively developed, with every new MetaQuotes feature landing here first
- Multi-asset support across forex, stocks, futures, and commodities
- 21 chart timeframes, built-in economic calendar, and Depth of Market
- Multi-threaded Strategy Tester runs multi-symbol backtests dramatically faster
Cons
- Smaller library of pre-built Expert Advisors compared to MT4's decade-plus head start
- MQL5's object-oriented structure has a steeper learning curve for beginners
- Netting-style default accounts require checking broker settings before running certain hedging strategies
- Some older, MT4-only brokers still don't offer it
The verdict
Pick MetaTrader 5 if you're opening a new account in 2026, want access to more than forex and CFDs, or plan to build and backtest a new Expert Advisor from scratch. Its architecture, timeframes, and backtesting speed are simply ahead of MT4 across the board, and it's the only platform MetaQuotes is still actively improving. For a beginner with no existing MQL4 investment, there's no real argument for starting on MT4 in 2026 at all.
Stick with MetaTrader 4 only if you have a working MQL4 Expert Advisor library, your broker still fully supports it, and you trade exclusively in forex or CFDs. Outside of that specific situation, migrating to MT5 is the more future-proof decision, since MT4 receives no meaningful ongoing development from MetaQuotes. Even traders who stay on MT4 for now should treat the migration plan above as a when, not an if, since broker support for MT4 will keep narrowing as MT5 adoption grows.
The platform choice ultimately comes down to a single question: are you protecting an existing MQL4 investment, or starting fresh? Starting fresh points to MT5 every time in 2026.
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