QuantIDE and QuantConnect
Your strategy. Your machine. Nobody else’s cloud.
QuantConnect is a capable platform and its free cloud backtesting is genuinely generous. But your code lives on their servers, your venues come from a list they maintain, and what you build is shaped by their engine. QuantIDE holds the same work on your own hardware, in your repository, under your keys.
Side by side
Two of these rows go to QuantConnect.
A comparison in which one product wins everything was written by that product’s marketing team. Rows marked ◆ are where QuantIDE is genuinely ahead.
| Question | QuantConnect | QuantIDE |
|---|---|---|
| Where backtests run | QuantConnect’s cloud. On-premises is available on the Institution tier. | ◆Your computer. Nothing is uploaded to run it. |
| Free backtesting | Unlimited cloud backtesting on the free tier, across all asset classes. | Unlimited, local, in your own Python. Nothing is queued, metered or throttled, because it runs on your hardware. |
| Live execution | Built into the platform. Live deployment requires a paid plan. | No execution engine ships. Order routing is built against your venue, with your credentials, and tested before it touches capital. |
| Broker and data support | A fixed set of integrations they build and maintain. If yours is missing, you wait. | ◆No list. An adapter is written against your venue’s API, as code in your project. |
| Language | Python or C#, written against the LEAN API. | ◆Whatever the job calls for. It is written for you, you read it, and it runs like any other program on your machine. |
| What you end up owning | A project inside their platform, in Python or C#, built on the LEAN engine. | ◆Source in your own repository, in any language, that runs like any other program. |
| Pricing | Free tier, then paid plans. Monthly prices are not published; tiers are quoted. | One monthly plan: the workstation and Stacks. |
| Maturity | Large, established, with years of community strategies and a proven engine. | Much newer. A smaller community and fewer shared strategies. |
QuantConnect details from quantconnect.com/pricing, checked August 2026
The difference
The list is the product. We ship the layer beneath it.
Where the code runs and who owns it matter more than any single feature row.
A platform sells you an integration list
QuantIDE has no list at all
And you keep the code
Due diligence
Questions asked before switching.
What does QuantIDE cost?
One monthly plan. The editor, the terminals, git and Stacks come with the app. Current terms are shown before you download rather than printed here, so they cannot drift out of date on a marketing page.
Why would I move off QuantConnect?
Usually one of three reasons. Your broker is not on their integration list and you are tired of waiting. You do not want your strategy code living on someone else’s servers. Or you want the research apparatus itself, the tools, the surfaces and the connections, to be something you build and keep rather than something you rent. If none of those apply, QuantConnect is a mature platform and there is no reason to switch.
What is QuantConnect genuinely better at?
Maturity. It has been around far longer, has a proven backtesting engine in LEAN, a large community with years of shared strategies, and institutional features such as on-premises deployment and code encryption. Its free cloud backtesting is genuinely generous. QuantIDE is newer and its community is smaller.
Am I locked into a language?
No. QuantConnect expects Python or C# written against the LEAN API, and what you build is shaped by that engine. QuantIDE is tied to no language and no engine: you get readable source you can open, change and keep, in whatever the job calls for, and it runs like any other program on your machine.
What happens if my broker is not supported?
There is no supported-broker list to be left off, and no pre-built integration to wait for. An adapter is written against your broker’s API as a small project in your repository, with its own tests and credentials scoped to that one connection. Nothing routes a live order until you have built and tested it.
Where does my strategy actually run?
On the computer in front of you: a desktop app for Windows, macOS and Linux. A running process is supervised and keeps going after you close QuantIDE, so you do not have to leave a window open. There is no hosted runtime; around-the-clock operation means a machine you control.