Softwr

CAD · head to head

Altium 365 vs Neptune.ai

Altium 365 logo

Altium 365

CAD

Cloud workspace for Altium Designer PCB projects, now inside Renesas

From
$1990/year
Rated
-
Full reviewWebsite
Neptune.ai logo

Neptune.ai

Machine Learning

Metadata store for MLOps

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Neptune.ai has a free tier, so it costs nothing to try first.
  • Each has a real cost: Altium 365 the 1,990 US dollar Altium Develop entry price is capped at five authors in total, so a growing team hits a forced migration to Agile Teams with unpublished pricing exactly when headcount is rising.; Neptune.ai free tier limited to 100 hours per month, exhausted quickly with serious ML work
  • They diverge on capability: Altium 365 covers Shared workspace, Neptune.ai covers Experiment tracking.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Altium 365 and Neptune.ai actually diverge.

Attributes where Altium 365 and Neptune.ai differ
AttributeAltium 365Neptune.ai
Starting price$1990/yearFree
Pricing modelPer user per yearUnknown
Free tierNoYes
PlatformsWeb, Windows, Cloud, On-premiseWeb, Self-hosted
CategoryCADMachine Learning
FoundedUnknown2017

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

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Altium 365

  • Shared workspace
  • Managed components
  • Browser review
  • Unlimited workspace users
  • MCAD CoDesigner
  • Manufacturing portal
  • Requirements Portal
  • BOM Portal

Only in Neptune.ai

  • Experiment tracking
  • Model registry
  • Metadata logging
  • Comparison views
  • Custom dashboards
  • PyTorch
  • TensorFlow
  • Keras

What people use each for

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

Altium 365

  • A hardware startup where two engineers draw boards but eight people need to review them, avoiding eight CAD seatsnot Neptune.ai
  • A team handing fabrication and assembly data to a contract manufacturer as a versioned release rather than a zip of Gerbersnot Neptune.ai
  • A company running board and enclosure design in parallel and needing bidirectional geometry exchange with mechanical CADnot Neptune.ai
  • A buyer checking component lifecycle and availability against the live BOM before a design is frozennot Neptune.ai

Neptune.ai

  • Machine learningnot Altium 365
  • Data analysisnot Altium 365
  • Model trainingnot Altium 365
  • Predictive analyticsnot Altium 365

Where each one falls short

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

Altium 365

  • The 1,990 US dollar Altium Develop entry price is capped at five authors in total, so a growing team hits a forced migration to Agile Teams with unpublished pricing exactly when headcount is rising.
  • Add-on portals are expensive per seat; BOM Portal has been quoted at around 1,999 US dollars per user per year and MCAD CoDesigner at around 499, so the real cost of a working configuration is well above the headline.
  • It is tied to Altium Designer; there is no meaningful use of the platform for teams designing in KiCad, OrCAD or Allegro, which makes it a lock-in decision rather than a tooling one.
  • Renesas acquired Altium in 2024, and a semiconductor manufacturer owning the design tool used to select competing semiconductors is a conflict some buyers will want addressed in writing before uploading a library.
  • Repeated repackaging, from Altium 365 Standard and Pro tiers to Altium Develop and Agile Teams, has made renewal comparisons difficult and customers have found their previous tier no longer maps to anything on the price list.

Neptune.ai

  • Free tier limited to 100 hours per month, exhausted quickly with serious ML work
  • Lacks hyperparameter sweeps compared to Weights and Biases
  • No pipeline orchestration or broader MLOps lifecycle management
  • Dashboard visualization limitations - automatic resizing affects visualization order and size
  • Cloud-based SaaS only (as of last available service) requires internet connectivity

Pricing, plan by plan

Altium 365

$1990/year
  • Altium Develop$1990/year
    • One Altium Designer author licence
    • One workspace for shared projects and libraries
    • Unlimited workspace users for review, comment, tasks and BOM access
  • Altium Agile Teams$undefined/year
    • For teams beyond five ECAD authors
    • Extended workspace governance and administration
    • Quoted, no published price
  • Enterprise$undefined/year
    • On-premise or private cloud workspace server
    • Formal ECO and lifecycle governance
    • Quoted, no published price

Neptune.ai

Free

No published plan breakdown. See the Neptune.ai review.

Which should you pick?

Choose Altium 365 if

  • You need shared workspace.
  • You work on Web, Windows, Cloud, On-premise.
  • You also want managed components.
Altium 365 review

Choose Neptune.ai if

  • You need experiment tracking.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want model registry.
Neptune.ai review

Questions people ask

Is Altium 365 or Neptune.ai better?
Neither clearly leads. Altium 365 starts at $1990/year and Neptune.ai at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Altium 365 or Neptune.ai?
Neptune.ai has a free tier; the other does not. Paid plans start at $1990/year for Altium 365 and Free for Neptune.ai.
Does Altium 365 or Neptune.ai run on more platforms?
Altium 365 runs on Web, Windows, Cloud, On-premise. Neptune.ai runs on Web, Self-hosted.
Can I use Neptune.ai for free?
Yes. Neptune.ai has a free tier, so you can try it without paying. Altium 365 starts at $1990/year.
What is Altium 365 best used for?
Altium 365 is most often used for a hardware startup where two engineers draw boards but eight people need to review them, avoiding eight cad seats, a team handing fabrication and assembly data to a contract manufacturer as a versioned release rather than a zip of gerbers, a company running board and enclosure design in parallel and needing bidirectional geometry exchange with mechanical cad, a buyer checking component lifecycle and availability against the live bom before a design is frozen. Of those, a hardware startup where two engineers draw boards but eight people need to review them, avoiding eight cad seats and a team handing fabrication and assembly data to a contract manufacturer as a versioned release rather than a zip of gerbers are not what Neptune.ai is typically brought in for.
What can Altium 365 do that Neptune.ai cannot?
Altium 365 covers Shared workspace, Managed components, Browser review, Unlimited workspace users. Neptune.ai covers Experiment tracking, Model registry, Metadata logging, Comparison views.

Answered from the vendors’ own pages

Altium 365: Is Altium 365 free with Altium Designer?

A workspace is included with a current subscription, but the higher tiers, extra authors and the add-on portals are chargeable. The unlimited non-author users are genuinely included.

Neptune.ai: Does Neptune.ai support self-hosting?

Yes. Neptune can be self-hosted on a Kubernetes cluster with ClickHouse, MySQL, and Redis dependencies, allowing organizations to maintain full data control.

Source
Altium 365: What does it cost?

Altium Develop starts at about 1,990 US dollars a year for one author plus a workspace, with extra authors at 995 US dollars each up to four more. Larger teams are quoted.

Neptune.ai: What machine learning frameworks does Neptune integrate with?

Neptune integrates with PyTorch, TensorFlow, Keras, scikit-learn, XGBoost, LightGBM, Hugging Face Transformers, and Optuna for hyperparameter optimization.

Source
Altium 365: Who owns Altium now?

Renesas Electronics completed its acquisition of Altium in 2024. Altium 365 is therefore a Renesas-owned platform.

Neptune.ai: What is the cost for a team of 10 data scientists?

Neptune's Team plan costs $49 per user per month, resulting in $490/month for 10 users, comparable to Weights and Biases at $50/user.

Source
Altium 365: Can I keep design data on my own servers?

Yes, through the Enterprise on-premise workspace server, but that is a quoted product and most of the newer portal features assume the hosted platform.

Neptune.ai: When is Neptune.ai shutting down?

Neptune.ai is shutting down its external SaaS service on March 5, 2026, following its acquisition by OpenAI in December 2025. Customers must export and migrate data before that date.

Source
Share

Related pages

More on Altium 365

More on Neptune.ai

Keep looking

Other head to heads