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Software Development · head to head

Factory vs Keil MDK

Factory logo

Factory

Software Development

The autonomy stack for enterprise teams

From
$20/month
Rated
-
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Keil MDK has a free tier, so it costs nothing to try first.
  • Each has a real cost: Factory business and Enterprise plans require direct sales contact for pricing; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site

Where they differ

Only the attributes on which Factory and Keil MDK actually diverge.

Attributes where Factory and Keil MDK differ
AttributeFactoryKeil MDK
Starting price$20/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
CategorySoftware DevelopmentDeveloper Tools

Identical on both: platforms (Web), user rating (Not yet rated).

What people use each for

The jobs each tool is most often brought in to do.

Factory

  • AI agent development and deploymentnot Keil MDK
  • Multi-platform automationnot Keil MDK
  • Background task executionnot Keil MDK
  • Agent orchestrationnot Keil MDK

Keil MDK

  • Embedded software developmentnot Factory
  • ARM microcontroller programmingnot Factory
  • Professional development environmentsnot Factory

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Factory

  • Business and Enterprise plans require direct sales contact for pricing
  • Individual plans (Pro, Plus, Max) have limited feature details

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

Pricing, plan by plan

Factory

$20/month
  • Pro$20/month
    • Agent-native multi-platform experience
    • Desktop, CLI, and SDK access
    • Cloud and local background agents
  • Plus$100/month
    • Everything in Pro
    • Approximately 5x usage limits
    • Droid Computers for remote agents
  • Max$200/month
    • Everything in Plus
    • Approximately 10x usage limits
    • Early access to new features
  • Business$null/mo

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Factory if

Nothing in the data separates Factory from Keil MDK on the points above - pick on price and on how each one feels to use.

Factory review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Factory or Keil MDK better?
Neither clearly leads. Factory starts at $20/month and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Factory or Keil MDK?
Keil MDK has a free tier; the other does not. Paid plans start at $20/month for Factory and Free for Keil MDK.
Does Factory or Keil MDK run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Keil MDK for free?
Yes. Keil MDK has a free tier, so you can try it without paying. Factory starts at $20/month.
What is Factory best used for?
Factory is most often used for ai agent development and deployment, multi-platform automation, background task execution, agent orchestration. Of those, ai agent development and deployment and multi-platform automation are not what Keil MDK is typically brought in for.

Answered from the vendors’ own pages

Factory: What is Factory.ai's pricing?

Factory.ai offers individual plans starting at USD$20 per month for Pro, USD$100 per month for Plus, and USD$200 per month for Max. Team plans including Business and Enterprise tiers are available at custom pricing based on the number of seats required.

Source
Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

Source
Factory: What are the usage limits for each plan?

The Pro plan is the baseline tier. Plus provides approximately 5 times the usage limits of Pro, while Max provides approximately 10 times the usage limits of Pro. Exact usage limits are not specified on the pricing page.

Source
Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
Factory: What AI models are included with Factory.ai?

All Factory.ai plans include access to GPT-5, Claude Opus and Sonnet, Google Gemini, and open-weight models. Business and Enterprise plans also include dedicated compute with partitioned inference and options for on-premise deployment.

Source
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