Software advice
Best AI CAD Software in 2026
AI CAD software is computer-aided design software for parts, assemblies and drawings that uses machine learning or a language model to do some of the drafting work: generating geometry from a prompt, producing a first-pass drawing, assigning assembly mates or answering how-to questions inside the editor. It is not a mesh generator for game art, and it does not replace an engineer's judgment about tolerances.
Quick answer
Leo AI ranks first for engineering teams that keep their existing CAD and want an agent on top. Zoo Design Studio is the pick for prompt-to-geometry with a free desktop app, and BricsCAD suits DWG shops that want local AI tools on a perpetual license.
A buyer in 2026 meets two different products under one label. One group adds an AI layer to an established modeler: a chat assistant, automatic drawings, assembly mating. The other builds the modeler around an agent, so a sentence becomes a dimensioned part. This ranking judges what the AI actually does in each package, what a seat costs where the vendor publishes it, whether your drawings and models feed a training set, and how hard it is to leave. Order is editorial, with smaller vendors ahead of the big incumbents. Facts come from vendor pages opened on 31 October 2026, and anything unreadable is marked as such.
The 11 best AI CAD software in 2026, ranked
There is no score. Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. How we rank.
| # | Tool | Best for | Free plan | Entry price |
|---|---|---|---|---|
| 1 | Leo AI | Mechanical teams that want an AI engineer working across their existing CAD and PLM systems | No | Quoted |
| 2 | Zoo Design Studio | Hardware engineers who describe a part in words, then edit it as code or by clicking | Yes | Quoted |
| 3 | BricsCAD | DWG-based drafting offices that want AI cleanup tools and a perpetual license option | Trial | €710 per user per year |
| 4 | Onshape | Small product teams that want browser-based CAD with built-in versioning and a how-to assistant | Yes | $1,500 per user per year |
| 5 | nTop | Aerospace, propulsion and motorsport engineers iterating on optimized or lattice geometry | No | Quoted |
| 6 | Solid Edge | Mechanical teams that want auto-generated drawings and assembly mates inside a mid-market parametric CAD | No | Quoted |
| 7 | Siemens NX | Aerospace and automotive design groups already standardized on high-end Siemens CAD | No | Quoted |
| 8 | PTC Creo | Product companies that want generative design and simulation inside a long-established parametric CAD | No | Quoted |
| 9 | SOLIDWORKS | Existing SOLIDWORKS shops that want drawing automation and an in-product knowledge assistant | No | Quoted |
| 10 | Shapr3D | Industrial designers sketching parts on an iPad or Mac, then exporting to other CAD | Yes | Quoted |
| 11 | Adam | Mechanical teams that want prompt-to-CAD plus drawings inside the CAD they already use | Trial | Quoted |
- 1
Leo AI
Leo AI is first because it adds an agent to the CAD you already own instead of asking for a migration. It runs on a Large Mechanical Model trained on 3D CAD data, reviews assemblies, finds parts in your PLM and generates native CAD with feature history. It works across SolidWorks, Creo, NX, Onshape and others, which is rare. The price needs a sales call.
Strong on
- Connects to SolidWorks, Creo, Siemens NX, Inventor, Fusion 360, Onshape and CATIA V5
- Inspector ranks design issues by severity on an assembly, folder or STEP file
- Reports SOC 2 Type II and no training on customer CAD files for Business and Enterprise plans
Weak on
- No published prices and no free trial, only a tailored demo
- The no-training statement is stated for Business and Enterprise customers only
- It is an add-on layer, so a CAD license is still needed
Skip it if: Solo makers and students who want a free tool to design a first part. Annual enterprise subscription priced per user, quoted after a demo; no free trial is offered.
- 2
Zoo Design Studio
Zoo Design Studio sits second as the clearest case of a modeler built around an agent. Zookeeper turns a sentence into parametric geometry on Zoo's own engine, and a KCL code view makes the result inspectable. Version 1.5.3 was updated on 28 October 2026. It lacks the drawing, simulation and vault depth of an established suite, so it fits new parts better than a legacy catalog.
Strong on
- Zookeeper agent inspects and debugs its own geometry before returning a part
- Reports SOC 2 Type II and a US regulated region for ITAR information
- Enterprise option to fine-tune models on a company's own CAD data
Weak on
- Zookeeper reasoning time and billable API use draw from a monthly credit
- Training exclusion is stated for team and enterprise data, not for free users
- Paid price points were not readable in server-rendered HTML
Skip it if: Companies with a large vault of legacy parametric assemblies that must stay in their current format. Desktop app is free; paid plan prices render client-side and could not be read.
- 3
BricsCAD
BricsCAD ranks third because it is the only DWG-native package here with a published price, a perpetual license and a local AI layer. Drawing Health cleans messy files, AI Predict suggests commands and the BIM toolset classifies geometry. The AI is about productivity inside drafting, not generating parts from prompts, and the Pro page itself does not list AI features.
Strong on
- Published prices: €710 per year, €1,910 for three years or €1,596 perpetual
- QUAD command predictions run locally without sending drawing data to the cloud
- Opens DWG, DXF, DGN, STEP and IGES files, with a 30-day free trial
Weak on
- No text-to-geometry generation; AI is limited to cleanup, prediction and BIM tools
- Personalized AI Predict needs an analytics program that sends usage data to Bricsys servers
- BIM automation features are listed for the BIM and Ultimate levels
Skip it if: Mechanical designers who want a parametric modeler with prompt-driven part creation. Pro 1-year subscription; a perpetual Pro license costs €1,596, plus €266 per year for maintenance.
- 4
Onshape
Onshape comes fourth because its AI is modest and clearly described. AI Advisor answers questions from Onshape's own training material with source links, and the page says it does not generate designs or support generative design. The product's strength is cloud-native CAD with version control. Pick it for the platform and treat the assistant as a convenience.
Strong on
- Published per-user prices for Standard and Professional plans
- AI Advisor cites sources from Onshape's training library inside the workspace
- Free plan, a Discovery Program of up to 6 months, and free education access
Weak on
- AI Advisor does not generate designs and is not part of Onshape Government
- Free plan documents are all public and limited to non-commercial use
- The pricing page does not say which plans include the assistant
Skip it if: Teams that need a CAD tool that drafts parts or drawings from a prompt. Standard plan billed annually; Professional is $2,500 per user per year; free plan is non-commercial.
- 5
nTop
nTop is fifth because it addresses a narrower job than the general suites. Its models are built from rules so thousands of design variants can be explored when requirements change, and the site mentions Physics AI as an option beside conventional solvers. It does not describe a prompt-to-part feature, and the pages read give little detail on how the AI works.
Strong on
- Parametric models described as regenerating across thousands of variants in parallel
- Aimed at aerospace, propulsion, motorsports and energy applications
- Supports solvers of your choice or Physics AI for validation
Weak on
- No prices, trial or plan names on the pages read
- Little detail on what the AI features do or how they train
- Data handling was not described beyond a link to the privacy policy
Skip it if: Everyday bracket and enclosure designers who need standard drafting and drawings. Sold through a demo request; the site shows no price list.
- 6
Solid Edge
Solid Edge takes sixth place for the most concrete AI features of the established suites. Automatic Drawings produces 2D drawings that Siemens describes as 70 to 80 percent complete, Magnetic Snap Assembly assigns several mates in one operation, and Design Copilot answers questions in the editor. Tier-by-tier availability of the first two was not stated, and there is no public price.
Strong on
- Automatic Drawings handles orthogonal, broken and isometric views with dimensioning
- Magnetic Snap Assembly supports planar, cylindrical, edge and coordinate-system geometry
- Design Copilot is included in Standard, Advanced and Premium tiers
Weak on
- Generated drawings still need review, since Siemens itself calls them mostly complete
- Tier availability for drawings and snap assembly is not given in the article read
- No published prices and no data handling statement on the pages read
Skip it if: Shops that need a published price list and a free trial before talking to sales. Designcenter X Solid Edge sold in Standard, Advanced and Premium tiers; prices not published.
- 7
Siemens NX
Siemens NX holds seventh place because the AI is documented through a blog post rather than a product page. Copilot for NX X answers natural-language questions from trusted sources, can generate geometry from natural-language input and documented best practices, and is built on Microsoft's Phi-3 small language model. NX X also lists generative design and design automation, but pricing and data terms were not found.
Strong on
- Copilot answers questions and drafts geometry from natural-language input
- NX X is delivered online as software as a service
- Includes generative design and design automation alongside an adaptive interface
Weak on
- The source is a Siemens blog post, so current packaging and naming may differ
- No licensing or data handling details for the copilot were stated
- Pricing is available on request only, with no public list
Skip it if: Small studios that want a self-serve tool with a visible monthly price. Licensing is quoted by Siemens; no list price was found.
- 8
PTC Creo
PTC Creo ranks eighth because its documented AI is generative design, not an assistant. Creo 12, announced in June 2025, added thermal physics to that capability and automatic contact creation for real-time simulation with Ansys. Creo+ is the SaaS version. A Creo AI assistant was mentioned by a reseller but not confirmed on PTC's own pages.
Strong on
- Generative design with thermal physics added in the Creo 12 release
- Real-time simulation with automatic contact creation through Ansys
- Creo+ is offered as the software-as-a-service version of Creo
Weak on
- No assistant or prompt features were confirmed on PTC's own pages
- No pricing or data handling statement in the announcement read
- Generative design output still needs a manufacturing and review pass
Skip it if: Teams who want conversational or prompt-driven part creation inside the modeler. PTC's Creo 12 announcement gives no license terms or prices.
- 9
SOLIDWORKS
SOLIDWORKS finishes the list because its 2026 AI is real but narrow. Dassault describes generative AI that speeds drawing creation and detailing, recognition of fastener-like parts that assembles them automatically, and a virtual companion that summarizes community posts and wikis. It is the largest installed base in the category, so the AI matters mostly as an upgrade rather than a reason to switch.
Strong on
- Generative AI for drawing creation and detailing in SOLIDWORKS 2026
- Automatic recognition and assembly of nuts, bolts and similar parts
- Part of the 3DEXPERIENCE portfolio with design, simulation, electrical and PDM
Weak on
- No prompt-to-part generation was described in the release announcement
- The virtual companion draws on community content rather than your own files
- Data handling for the AI features was not checked
Skip it if: Buyers wanting a generative modeler or a tool that builds parts from a sentence. Priced through resellers and subscriptions; no list price was found on pages read.
- 10
Shapr3D
Shapr3D ranks tenth because its AI is a rendering aid, not a modeler that builds parts from text. The pricing page lists generative renders per day (three on Basic, fifty on Pro, unlimited on Enterprise) on top of a Parasolid-based direct modeler that runs on Mac, iPad, iPhone and Windows. It is easy to learn, but buyers wanting prompt-to-geometry will not find it here.
Strong on
- Runs on Mac, iPad, iPhone and Windows with a shared interface
- Built on the Siemens Parasolid kernel and imports files from SOLIDWORKS and others
- Lists SOC 2 Type II and offers private cloud or on-premises options on Enterprise
Weak on
- The generative feature produces renders rather than editable geometry
- The free Basic plan caps projects at two and limits generative renders
Skip it if: Engineers who need generated geometry, simulation or large assembly management. A free Basic plan exists; the Pro tier is billed annually per editor seat and the displayed figure was unclear.
- 11
Adam
Adam ranks eleventh because it is a young, Y Combinator-backed agent product rather than a full CAD package. It describes prompt-to-CAD generation, 3D-to-2D drawings, a simulation loop, part edits after engineering changes and manufacturability checks, working inside Fusion, Onshape, SOLIDWORKS and others. The agent idea is strong, though no price, track record or customer count was verified.
Strong on
- Works through existing CAD, PLM and simulation tools, including Onshape and SOLIDWORKS
- Generates 2D drawings from 3D models and runs manufacturability checks
- Lists SOC 2 Type I and AES-256 encryption at rest
Weak on
- SOC 2 is Type I only, and data stays private only on enterprise plans
- Pricing figures and free-tier terms were not readable on the pages read
Skip it if: Teams that need an established vendor with published prices and a long record. The pricing page shows Personal and Teams tabs, but no figures were readable on the pages opened.
How these AI CAD software were judged
What does the AI really do inside the CAD tool?
Vendors use the word AI for very different jobs, so read the feature list. Leo AI reviews assemblies and generates CAD with a feature history. Zoo's Zookeeper agent writes parametric geometry from a sentence. Solid Edge describes automatic drawings that arrive 70 to 80 percent complete, plus AI-assigned mates. Onshape's AI Advisor answers questions and says on its own page that it does not generate designs. BricsCAD's AI tools lean toward drawing cleanup and BIM classification. Ask each vendor for your own hardest part before you believe a demo.
What does a seat cost once the AI is included?
Published prices are scarce. As of October 2026 Onshape lists Standard at $1,500 and Professional at $2,500 per user per year, and BricsCAD Pro starts at €710 per year with a perpetual license at €1,596. Zoo makes its desktop app free and meters Zookeeper reasoning time. Leo AI sells an annual enterprise subscription per user with a demo and no trial. NX, Solid Edge, Creo, SolidWorks and nTop quote on request. Ask whether the AI features sit in the base tier or an upgrade.
Will my designs be used to train the vendor's model?
Models and drawings are intellectual property, so this question matters more here than in most software. Leo AI states that it does not train on customer CAD files for Business and Enterprise customers and reports SOC 2 Type II. Zoo excludes team and enterprise data from training by default, reports SOC 2 Type II and offers a US regulated region for export-controlled work. BricsCAD says its QUAD predictions run locally, while the personalized AI Predict ribbon sends usage data to its servers. The policies of SolidWorks, NX, Creo and nTop were not read for this list.
How hard is it to switch CAD vendors later?
Lock-in sits in the native file format, the vault and the add-in library, not in the AI. Cloud-native Onshape keeps documents on its servers, and its free plan makes every document public. SolidWorks, NX, Solid Edge and Creo hold years of parametric history in proprietary formats. BricsCAD works on DWG, which eases moving from or to other drafting tools. Agent layers such as Leo AI work across several CAD systems, which lowers the cost of changing the underlying tool. Export a neutral STEP file of a real project before committing.
Which package fits a small shop, a design team or a plant?
Match the tool to the work you already do. A five-person product studio can start on Zoo or Onshape without a server. A drafting office that lives in DWG files should test BricsCAD. A company with a large SolidWorks or NX installed base gets more from the vendor's own assistant than from a switch. A team with a messy vault and many legacy parts is the case for Leo AI. Aerospace groups exploring optimized structures are the natural nTop buyer.
How to choose an AI CAD software package in three steps
- Write down the three jobs you want the AI to take over. Pick tasks that cost real hours: first-pass drawings, mate setup, finding an existing part, writing a spec for a new bracket, cleaning a legacy DWG. Then check each shortlisted tool's own documentation for that exact task. Solid Edge names automatic drawings and snap assembly, Leo AI names design review and part search, Zoo names prompt-to-part. A vendor that cannot name your job in its feature list does not do it yet. Keep the list to three so the trial stays honest and a demo cannot drift into slides.
- Run one of your own parts through each trial. Take a real part with a thread, a fillet chain or a thin wall and give it to the tool that supports a free start. Zoo's desktop app is free to download, BricsCAD offers a 30-day trial, and Onshape offers a free plan for non-commercial work. For the sold-by-demo tools, ask the vendor to run your file on a call. Note what you had to correct by hand and how long it took, because that correction time is the real cost of the product, not the license.
- Read the data terms before uploading drawings. Ask in writing whether prompts, models and drawings are used for training, where they are stored, and which plan the exclusion covers. Leo AI limits its no-training statement to Business and Enterprise customers, and Zoo's statement covers team and enterprise data. If your parts are export-controlled, check for a regulated region. A security page that stays silent on training is a reason to ask the vendor directly, not a reason to assume the best, and the answer belongs in the contract.
Frequently asked questions
What is the best AI CAD software in 2026?
Leo AI ranks first in this editorial list because it works across SolidWorks, Creo, NX, Onshape, Fusion and CATIA V5 and documents design review, part search and CAD generation. Zoo Design Studio is second for prompt-to-geometry on a free desktop app, and BricsCAD third. No head-to-head accuracy test was run, so the order reflects what each vendor documents.
Can AI generate a CAD model from a text prompt?
Yes, in a few products. Zoo's Zookeeper agent builds parametric geometry from a sentence, and Leo AI generates CAD from text, images and drawings. Siemens says its NX copilot can create geometry from natural-language input. Results are best for simple mechanical parts and need checking against dimensions, since a generated feature tree can still contain errors.
Is there free AI CAD software for commercial work?
Mostly no. Zoo Design Studio for desktop is free to download, though Zookeeper reasoning time is metered. Onshape's free plan is for non-commercial use and makes all documents public. BricsCAD offers a 30-day trial and says Shape stays free afterward. Commercial AI features generally sit behind a paid seat or an enterprise quote.
Do I need to switch from SolidWorks to get AI features?
No. SOLIDWORKS 2026 added generative AI for drawing creation and detailing, automatic assembly of fastener-like parts and a virtual companion that summarizes community posts. An agent such as Leo AI also connects to SolidWorks and its PDM. Test the built-in features first, then decide whether an add-on layer justifies another subscription.
Which AI CAD tool is best for drawings?
Solid Edge documents the clearest drawing workflow among the tools checked: you choose a template, sheet size and views, and its AI returns a drawing that Siemens describes as 70 to 80 percent complete. SOLIDWORKS 2026 also lists generative AI for drawing creation. Plan for review time, because dimensioning conventions differ between companies.
Does AI in CAD put my intellectual property at risk?
It can, depending on the vendor. Leo AI and Zoo each state they do not train on business customer data, and both report SOC 2 Type II. Other vendors on this list did not state a training policy on the pages read. Before uploading models, ask for the clause in writing and check which plan it covers.
What is the difference between generative design and AI CAD?
Generative design searches for shapes that meet loads and constraints, such as the thermal physics PTC added to Creo's generative design in release 12, and nTop's rule-driven geometry. AI CAD in the assistant sense drafts or edits the model on request. Many suites now offer both, but they solve different problems and are bought for different reasons.
How accurate are AI-generated CAD parts?
Accuracy was not benchmarked for this list, and no vendor page gave a verified error rate. Zoo describes engine tools that let its agent inspect and debug geometry, and Leo AI runs checks and calculations with cited sources. Treat every generated feature tree as a draft: check dimensions, units and manufacturability before release.