比較
SpeakCADと他のツールの比較
SpeakCADが勝る点、他のツールが勝る点、そして両方を使うべきとき。すべてのツールを1つの表で
AI CADからメッシュ生成ツール、従来のCADまで、17のツールを並べて比較しました。競合ツールの機能と価格は2026年10月4日に各ツールの公式サイトで確認しています。サイトに記載がない場合、セルには「check their site」と表示されます。表の内容は英語です。価格は変わるため、購入前に出典のリンクをご確認ください。| ツール | 種類 | 正確な寸法（mm） | チャットで編集 | スマホで使える | 出力形式 | スライス済みG-code | 無料プラン | 最低価格 | 向いている用途 |
|---|---|---|---|---|---|---|---|---|---|
| SpeakCAD | AI CAD (parametric OpenSCAD) | Yes | Yes; hand tools (hole, cut, add, extrude, text, rounded corners, filleted edges, shell, copies, measure) and typed numbers are free | Yes, full editor in the browser, laid out for a thumb | STL, 3MF, G-code | Yes, for 380+ printers, at the price of the STL | Hand tools and the files they make (free account); live demo (3 AI edits, no account); open and resize 650+ ready-made models; no free generation | Maker $7.99/mo (50 credits) | Functional parts with exact mm, from a phone |
| AdamCAD (CADAM) | AI CAD (parametric OpenSCAD), open source | Yes | Yes, plus parameter sliders | Opens in a phone browser (check their site) | STL, SCAD, DXF | No | Light daily quota; self-host with your own AI key | Pro $40/mo | Open source, self-hosting, BOSL2 |
| Zoo (Zookeeper) | AI CAD (B-rep, KCL code) | Yes | Yes (Zookeeper agent) | Desktop app and browser version (check their site) | STEP, STL, OBJ, glTF and more | No | 20 min of Zookeeper a month | Plus $20/mo | STEP for machining, engineering |
| STLsmith | AI CAD for simple functional parts | Yes | Yes | Check their site | STL | No | 3 parts without an account, 5 more with one | $9 once for 100 parts | Hooks, brackets, spacers |
| Backflip AI | AI reverse engineering: scan, photo or drawing to CAD | Yes, scaled from the scan or one known dimension | No: you edit the feature tree in CAD | Web app; editing on a phone: check their site | Feature tree (Fusion), STEP | No | 50 credits at sign-up | Builder $20/mo | Rebuilding a scanned part as CAD |
| ChatGPT + OpenSCAD | Chatbot writes OpenSCAD code, you compile it | Yes, when the code is right | Yes, but you paste the code back and forth | Chat yes; compiling needs OpenSCAD or a browser build of it | Code; STL or 3MF after you compile it | No | Yes: free ChatGPT tier, OpenSCAD is free | Free | People who can debug OpenSCAD |
| Meshy | AI mesh generator (text or image) | No: scaled afterwards | Re-prompt or regenerate; no dimension edits | Generates from a phone browser | STL, 3MF, OBJ, FBX, GLB, USDZ | No (plug-ins send to slicers) | 100 credits a month | Pro $20/mo | Figurines, props, game assets |
| Tripo AI | AI mesh generator (image or text) | No: scaled afterwards | Regenerate or edit parts of the mesh | Generates from a phone browser | STL, 3MF, OBJ, FBX, GLB, USDZ, PLY | No | 200 credits a month (about 13 models, non-commercial) | Pro $20/mo billed yearly | Sculpts and figurines from a photo |
| MakerWorld MakerLab | AI image-to-3D (Meshy, Tripo and others) plus template tools | No for AI models; templates have size fields | No | Some tools in the Bambu Handy app | 3MF and STL for Bambu Studio | No: slice in Bambu Studio | 2 free Image-to-3D tries; many free template tools | Credit packs from about $3 (varies by region) | Multicolour figurines and gifts on a Bambu Lab |
| Tinkercad | Block-based CAD (no AI) | Yes, typed into each shape, not linked | No | No: 864 px minimum viewport, phones unsupported | STL, OBJ, GLTF, SVG | No | Free | Free | Learning CAD, classrooms |
| Onshape | Professional parametric CAD in the browser (AI Advisor answers questions, no geometry) | Yes, sketch constraints | No: AI Advisor explains Onshape, agents announced | Apps; reviews call them very hard to use on a phone | STEP, STL, 3MF, Parasolid and more | No | Free plan: non-commercial, every document public | Standard $1,500 a year | Real CAD in a browser, for free, in public |
| FreeCAD | Open-source parametric CAD (no AI) | Yes, sketch constraints | No | No: Windows, macOS, Linux | STEP, IGES, STL, DXF, OBJ and more | CAM workbench for CNC, not FDM slicing | Entirely free | Free | Full CAD for free, with time to learn it |
| SketchUp Free | Surface modeller in the browser (no AI) | Typed lengths while drawing; weak afterwards | No | No: computer; a mobile viewer | STL on the free web version | No | Free for personal use | Go $10.75/mo billed annually | Buildings, rooms, furniture |
| OpenSCAD | Code CAD (no AI) | Yes | No: you write the code | No: desktop app | STL, 3MF, AMF, OFF and more | No | Free, open source | Free | Programmers, large parametric projects |
| Fusion 360 | Professional parametric CAD | Yes | Sketch and feature based (check their site for AI features) | No: the mobile app is a viewer | STEP, STL, 3MF, OBJ, F3D and more | Check their site | Personal-use licence with limits | Paid plans (check their site) | Product design, assemblies, CNC |
| Shapr3D | Direct-modelling CAD (no AI) | Yes | No | No: iPad, Mac, Windows | STEP, STL, 3MF and more | No | Basic: 2 projects, basic-resolution exports | Pro $299 a year | Designers who draw on an iPad |
| Thingiverse Customizer | Sliders on OpenSCAD models (no AI) | Yes, within the author's sliders | No | Works, but sliders are fiddly | STL | No | Free | Free | Models built for Customizer |
SpeakCAD種類: AI CAD (parametric OpenSCAD)正確な寸法（mm）: Yesチャットで編集: Yes; hand tools (hole, cut, add, extrude, text, rounded corners, filleted edges, shell, copies, measure) and typed numbers are freeスマホで使える: Yes, full editor in the browser, laid out for a thumb出力形式: STL, 3MF, G-codeスライス済みG-code: Yes, for 380+ printers, at the price of the STL無料プラン: Hand tools and the files they make (free account); live demo (3 AI edits, no account); open and resize 650+ ready-made models; no free generation最低価格: Maker $7.99/mo (50 credits)向いている用途: Functional parts with exact mm, from a phone
AdamCAD (CADAM)種類: AI CAD (parametric OpenSCAD), open source正確な寸法（mm）: Yesチャットで編集: Yes, plus parameter slidersスマホで使える: Opens in a phone browser (check their site)出力形式: STL, SCAD, DXFスライス済みG-code: No無料プラン: Light daily quota; self-host with your own AI key最低価格: Pro $40/mo向いている用途: Open source, self-hosting, BOSL2
Zoo (Zookeeper)種類: AI CAD (B-rep, KCL code)正確な寸法（mm）: Yesチャットで編集: Yes (Zookeeper agent)スマホで使える: Desktop app and browser version (check their site)出力形式: STEP, STL, OBJ, glTF and moreスライス済みG-code: No無料プラン: 20 min of Zookeeper a month最低価格: Plus $20/mo向いている用途: STEP for machining, engineering
STLsmith種類: AI CAD for simple functional parts正確な寸法（mm）: Yesチャットで編集: Yesスマホで使える: Check their site出力形式: STLスライス済みG-code: No無料プラン: 3 parts without an account, 5 more with one最低価格: $9 once for 100 parts向いている用途: Hooks, brackets, spacers
Backflip AI種類: AI reverse engineering: scan, photo or drawing to CAD正確な寸法（mm）: Yes, scaled from the scan or one known dimensionチャットで編集: No: you edit the feature tree in CADスマホで使える: Web app; editing on a phone: check their site出力形式: Feature tree (Fusion), STEPスライス済みG-code: No無料プラン: 50 credits at sign-up最低価格: Builder $20/mo向いている用途: Rebuilding a scanned part as CAD
ChatGPT + OpenSCAD種類: Chatbot writes OpenSCAD code, you compile it正確な寸法（mm）: Yes, when the code is rightチャットで編集: Yes, but you paste the code back and forthスマホで使える: Chat yes; compiling needs OpenSCAD or a browser build of it出力形式: Code; STL or 3MF after you compile itスライス済みG-code: No無料プラン: Yes: free ChatGPT tier, OpenSCAD is free最低価格: Free向いている用途: People who can debug OpenSCAD
Meshy種類: AI mesh generator (text or image)正確な寸法（mm）: No: scaled afterwardsチャットで編集: Re-prompt or regenerate; no dimension editsスマホで使える: Generates from a phone browser出力形式: STL, 3MF, OBJ, FBX, GLB, USDZスライス済みG-code: No (plug-ins send to slicers)無料プラン: 100 credits a month最低価格: Pro $20/mo向いている用途: Figurines, props, game assets
Tripo AI種類: AI mesh generator (image or text)正確な寸法（mm）: No: scaled afterwardsチャットで編集: Regenerate or edit parts of the meshスマホで使える: Generates from a phone browser出力形式: STL, 3MF, OBJ, FBX, GLB, USDZ, PLYスライス済みG-code: No無料プラン: 200 credits a month (about 13 models, non-commercial)最低価格: Pro $20/mo billed yearly向いている用途: Sculpts and figurines from a photo
MakerWorld MakerLab種類: AI image-to-3D (Meshy, Tripo and others) plus template tools正確な寸法（mm）: No for AI models; templates have size fieldsチャットで編集: Noスマホで使える: Some tools in the Bambu Handy app出力形式: 3MF and STL for Bambu Studioスライス済みG-code: No: slice in Bambu Studio無料プラン: 2 free Image-to-3D tries; many free template tools最低価格: Credit packs from about $3 (varies by region)向いている用途: Multicolour figurines and gifts on a Bambu Lab
Tinkercad種類: Block-based CAD (no AI)正確な寸法（mm）: Yes, typed into each shape, not linkedチャットで編集: Noスマホで使える: No: 864 px minimum viewport, phones unsupported出力形式: STL, OBJ, GLTF, SVGスライス済みG-code: No無料プラン: Free最低価格: Free向いている用途: Learning CAD, classrooms
Onshape種類: Professional parametric CAD in the browser (AI Advisor answers questions, no geometry)正確な寸法（mm）: Yes, sketch constraintsチャットで編集: No: AI Advisor explains Onshape, agents announcedスマホで使える: Apps; reviews call them very hard to use on a phone出力形式: STEP, STL, 3MF, Parasolid and moreスライス済みG-code: No無料プラン: Free plan: non-commercial, every document public最低価格: Standard $1,500 a year向いている用途: Real CAD in a browser, for free, in public
FreeCAD種類: Open-source parametric CAD (no AI)正確な寸法（mm）: Yes, sketch constraintsチャットで編集: Noスマホで使える: No: Windows, macOS, Linux出力形式: STEP, IGES, STL, DXF, OBJ and moreスライス済みG-code: CAM workbench for CNC, not FDM slicing無料プラン: Entirely free最低価格: Free向いている用途: Full CAD for free, with time to learn it
SketchUp Free種類: Surface modeller in the browser (no AI)正確な寸法（mm）: Typed lengths while drawing; weak afterwardsチャットで編集: Noスマホで使える: No: computer; a mobile viewer出力形式: STL on the free web versionスライス済みG-code: No無料プラン: Free for personal use最低価格: Go $10.75/mo billed annually向いている用途: Buildings, rooms, furniture
OpenSCAD種類: Code CAD (no AI)正確な寸法（mm）: Yesチャットで編集: No: you write the codeスマホで使える: No: desktop app出力形式: STL, 3MF, AMF, OFF and moreスライス済みG-code: No無料プラン: Free, open source最低価格: Free向いている用途: Programmers, large parametric projects
Fusion 360種類: Professional parametric CAD正確な寸法（mm）: Yesチャットで編集: Sketch and feature based (check their site for AI features)スマホで使える: No: the mobile app is a viewer出力形式: STEP, STL, 3MF, OBJ, F3D and moreスライス済みG-code: Check their site無料プラン: Personal-use licence with limits最低価格: Paid plans (check their site)向いている用途: Product design, assemblies, CNC
Shapr3D種類: Direct-modelling CAD (no AI)正確な寸法（mm）: Yesチャットで編集: Noスマホで使える: No: iPad, Mac, Windows出力形式: STEP, STL, 3MF and moreスライス済みG-code: No無料プラン: Basic: 2 projects, basic-resolution exports最低価格: Pro $299 a year向いている用途: Designers who draw on an iPad
Thingiverse Customizer種類: Sliders on OpenSCAD models (no AI)正確な寸法（mm）: Yes, within the author's slidersチャットで編集: Noスマホで使える: Works, but sliders are fiddly出力形式: STLスライス済みG-code: No無料プラン: Free最低価格: Free向いている用途: Models built for Customizer
ツールごとのページ
SpeakCAD vs OpenSCAD
OpenSCAD is powerful but you write every line. SpeakCAD generates the OpenSCAD program from a plain-English description and renders it in the browser. Compare features, learning curve and output.SpeakCAD vs Tinkercad
Tinkercad is the free block-building CAD. SpeakCAD keeps the tapping and adds what Tinkercad lacks: linked millimetres, rounded corners, a phone editor, an AI for the rest, and files sliced for your printer. Compare precision, phones and exports.SpeakCAD vs Fusion 360
Fusion 360 is professional parametric CAD with a steep learning curve. SpeakCAD gets makers from idea to STL in minutes with plain English. Compare capability, speed and cost.SpeakCAD vs Meshy
Meshy generates textured organic meshes for games and art. SpeakCAD generates precise, parametric, watertight CAD parts for 3D printing. Compare outputs, precision and workflow.SpeakCAD vs Tripo AI
Tripo AI creates organic 3D models from text and images for creative work. SpeakCAD creates dimension-accurate, watertight CAD parts for 3D printing. Compare precision, editing and output formats.SpeakCAD vs Shapr3D
Shapr3D is the best-known CAD for iPad, built around the Apple Pencil. SpeakCAD runs in any phone browser and replaces drawing with describing. Compare devices, learning curve, output and price.SpeakCAD vs Thingiverse Customizer
Customizer changes the parameters an author exposed, on the models that support it. SpeakCAD rebuilds any STL as a parametric model and changes anything by chat. Compare scope, reliability and cost.SpeakCAD vs Zoo Text-to-CAD
Zoo generates B-rep CAD from text for engineers and developers, with STEP and an API. SpeakCAD is built for people with a 3D printer: phone browser, chat editing, print rules applied, STL and 3MF out.SpeakCAD vs AdamCAD (CADAM)
CADAM, Adam's open-source text-to-CAD app, writes OpenSCAD with sliders. SpeakCAD does it for 3D printing: phone editor, print rules, sliced G-code.SpeakCAD vs MakerWorld MakerLab
MakerLab, in Bambu Lab's MakerWorld, turns photos into multicolour figurines with Meshy, Tripo and more. SpeakCAD makes functional parts with exact millimetres.SpeakCAD vs Backflip AI
Backflip turns 3D scans, photos and drawings into parametric CAD or STEP for engineers. SpeakCAD designs printable parts from a description, on a phone.SpeakCAD vs STLsmith
STLsmith turns a description into an STL for hooks, brackets and spacers, with free tries. SpeakCAD adds a phone editor, 3MF, sliced G-code and STL editing.SpeakCAD vs Onshape
Onshape is full parametric CAD in the browser with a free plan. SpeakCAD is nine hand tools and an AI for 3D-printed parts, on a phone, with G-code at the end. Compare scope, phones, free tiers and AI.SpeakCAD vs FreeCAD
FreeCAD is free, open-source parametric CAD for the desktop. SpeakCAD runs in a phone browser with nine hand tools and an AI. Compare install, learning curve, fillets, phones and output.SpeakCAD vs SketchUp Free
SketchUp Free is a browser modeller built for architecture; its exports are surfaces, not always solids. SpeakCAD makes watertight parts in millimetres on a phone. Compare printability, dimensions and phones.よくある質問
寸法が合わなければならないパーツには、メッシュ生成ツールではなく、入力した数値からジオメトリーを計算するAI CADツールを選びましょう。スマホで作業してお使いのプリンター向けのスライス済みG-codeを受け取るならSpeakCAD、パソコンでセルフホストするならAdamCADのオープンソースツールCADAM、STEPファイルならZoo、シンプルなフックやブラケットならSTLsmith。フィギュアにはMeshy、Tripo、MakerLabが向いています。
一部は無料です。カード不要で無料なもの：手動ツール（ネジ頭付きの穴、カット、追加、押し出し、文字、角丸とエッジ、シェル、計測、列・グリッド・円状の複製。サイズと位置はすべてmm単位で入力）はアカウントなしのライブデモでも無料アカウントでも使え、手動で形づくったパーツは無料アカウントでSTLまたは3MFとして無料でダウンロードできます。ライブデモで実物のパーツをAIで3回編集すること、無料アカウントでライブラリの既製モデル650+点のいずれかを開いてサイズを変えること、Fit CheckのテストピースをSTLまたは3MFで入手することも無料です。ご自身のパーツをAIに説明するとクレジットを使います。新しいパーツやデザイン変更は3クレジット、小さな変更は2、簡単な調整（サイズや数値の変更）は1です。ダウンロードはすべてのプランに含まれます（プランなしでは4クレジット）。Makerは月額$7.99で50クレジット、いつでも解約できます。Proは月額$14.99（毎月200クレジット）です。お使いのプリンター向けにスライスしたG-codeの料金はSTLと同じです。
単独ではできません。ChatGPTはパーツを説明したりOpenSCADのコードを書いたりできますが、印刷できるファイルは作りません。その説明やコードをSpeakCADに貼り付ければ（「ChatGPTからSTLへ」のページを参照）、STL、3MF、またはお使いのプリンター向けのスライス済みG-codeが手に入ります。
フィギュアや有機的な造形ならMeshy、Tripo、MakerLab。機械加工の業者に渡すSTEPファイルならZoo、Backflip、Fusion 360。CADを無料で学ぶならTinkercad。オープンソースやセルフホストならCADAMかOpenSCADです。