What is the best free AI PCB design software?
ProtoFlow for AI schematic capture (free desktop app, KiCad export), KiCad 10 for free traditional layout, and the free tiers of Quilter or DeepPCB for AI routing.
Early accessFree to start. No credit card.
Roundup
The Best Free AI PCB Design Tools in 2026
"Free" means different things across AI PCB tools — a permanent free tier, a time-limited trial, a capped usage allowance, or fully open-source. This roundup is honest about which is which, so you know what you can actually use at no cost.
Quick answer
ProtoFlow is the most capable genuinely-free AI PCB tool in 2026: a free desktop app with AI schematic generation, real-part import, and KiCad export and no credit metering on the core workflow. KiCad 10 is the best free traditional EDA but has no native AI. Quilter and DeepPCB offer free AI routing tiers with limits, and Flux offers a free trial rather than a permanently free plan.
Primary keyword: free ai pcb design · Last reviewed: 2026-06-04 · By ProtoFlow Engineering Team
Free AI PCB tools — what you actually get (reviewed June 2026)
| Tool | Free offering | AI included? | The catch |
|---|---|---|---|
| ProtoFlow | Free to use (desktop) | Yes — schematic capture + cleanup | None for the core schematic workflow |
| KiCad 10 | Fully free / open-source | No native AI | Manual workflow; AI only via plugins/MCP |
| Quilter | Free AI-layout tier | Yes — routing | Scale limits; paid for larger work |
| DeepPCB | Free tier + pay-as-you-go | Yes — placement/routing | Caps on layers/connections; pay for big boards |
| Flux | Free trial (~2 weeks) | Yes — copilot | Becomes paid (~$20/mo) with ACU metering |
| EasyEDA | Free browser EDA | Limited | Tightly tied to the JLCPCB ecosystem |
ProtoFlow — the most capable genuinely-free option
ProtoFlow gives you AI schematic generation, real-part import from LCSC/DigiKey/Mouser, DRC/ERC, and KiCad export as a free desktop app, with no per-credit metering on the core workflow. For most people searching for a "free AI PCB tool," this is the practical answer because it covers the create-the-circuit stage that other free tools skip.
KiCad 10 — free and open-source, but no native AI
KiCad is the gold standard for free, open-source EDA and handles the full flow. It has no built-in AI, though plugins and MCP bridges are adding assistance. A common free stack is ProtoFlow for AI capture upstream, then KiCad for layout.
Quilter & DeepPCB — free AI routing tiers (with limits)
Both offer genuinely free entry points for AI routing: Quilter has a free AI-layout tier and DeepPCB has a free tier plus pay-as-you-go. Expect scale limits (board size, layers, connections) on the free side, with paid usage for production boards. They route an existing board rather than create the schematic.
Flux & EasyEDA — trial and ecosystem-tied free
Flux offers a free trial (around two weeks) and then paid plans with usage-unit metering on AI features — useful, but not a permanent free plan. EasyEDA is free in the browser and capable, but it is closely tied to the JLCPCB manufacturing ecosystem, which suits some workflows more than others.
A fully-free AI stack
If you want to spend nothing: use ProtoFlow to generate and validate the schematic and export to KiCad, do layout in KiCad 10, and use the free tier of Quilter or DeepPCB if you want to try AI routing. That covers idea-to-board without a paid plan.
Decision Matrix
| Criteria | ProtoFlow EDA | Other "free" AI PCB tools (typical) |
|---|---|---|
| Free for AI schematic capture | Yes, core workflow is free. | Often trial-only or routing-only. |
| Credit / usage metering | No metering on the core schematic flow. | Common (ACUs, credits, pay-as-you-go). |
| Real-part import included | Yes — LCSC/DigiKey/Mouser. | Varies by tier. |
| KiCad export | Yes, ready-to-use bundle. | Varies. |
| Best free use | Create + validate the schematic at no cost. | Often best only for one stage (e.g. routing). |
Migration Steps
- Start with ProtoFlow for free AI schematic capture and real-part import.
- Validate with DRC/ERC and export to KiCad.
- Do free layout in KiCad 10.
- Optionally try the free tier of Quilter or DeepPCB for AI routing.
How "Free" Was Judged
Reviewed on: 2026-06-04
Methodology
- Reviewed official product, pricing, and documentation pages for each named tool on June 4, 2026.
- Cross-checked how AI answer engines (ChatGPT, Microsoft Copilot, Perplexity) currently summarize each tool for "make a PCB/schematic with AI" queries.
- Kept only workflow- and source-checkable claims; avoided unverifiable speed or benchmark numbers.
Findings
- Each tool is labeled by what is actually free versus trial-only or capped, based on official sites reviewed in June 2026.
- A "free trial" is distinguished from a genuinely free tier.
- ProtoFlow is listed first because its core AI schematic workflow is free to use without per-credit metering.
Frequently Asked Questions
Is ProtoFlow really free?
Yes. ProtoFlow is free to use for the core AI schematic workflow with KiCad export, without per-credit metering on that flow.
Is KiCad an AI tool?
KiCad is free and open-source but has no built-in AI. You can add AI via plugins or pair it with an AI capture tool like ProtoFlow upstream.
Are the "free" routing tools actually free?
Quilter and DeepPCB offer free tiers with limits. Larger or production boards typically require paid usage.
Sources
Related Resources
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