Start for free
Guide

AI PCB design: what AI can and can't do on a circuit board in 2026

AI PCB design means letting software draft part or all of a circuit board: picking parts, drawing the schematic, placing the components, routing the copper and checking the result. In 2026 AI handles some of those steps well and others barely, and tool pages rarely say which. Below is each step in turn, then how to check a board an AI hands you.

By the Cherry Blossom team

The short answer

AI PCB design works today, unevenly. AI is good at turning a description into a schematic, finding real parts, and routing simple to medium boards. It is weaker at placing parts on dense boards, and it signs off on nothing: high-speed, RF and power-integrity work still needs an engineer. Every AI-made board needs a human review and the manufacturer's DFM check before you pay for it.

The tools come in four kinds. Prompt-to-board agents draft the whole design (Cherry Blossom, Trace). Copilots help inside an editor you drive (Flux). Layout engines place and route a schematic you already finished (Quilter, DeepPCB, Cadence Allegro X AI). Front ends turn requirements into a schematic and BOM (Celus, Circuit Mind). Choose by the step that slows you down.

To start from a plain-English description and end with Gerbers, without installing anything, try Cherry Blossom: Sakura, its AI agent, finds real parts, draws the schematic and asks before it places and routes the board. It is free, with the AI from $20 a month.

The basics

What is AI PCB design?

AI PCB design is using software to do one or more steps of circuit board design for you, instead of only helping you do them by hand. The steps are the same whoever does them: decide what the board must do, pick parts, draw the schematic, place the footprints, route the copper, and check it all against the manufacturer's rules.

Two different technologies share the label. Language-model agents and copilots, such as Cherry Blossom's Sakura and Flux Copilot, read a request in plain English and edit a schematic or layout the way a person would. Optimisation and reinforcement-learning engines, such as Quilter and DeepPCB, search through placements and routes for one that meets the rules.

A classic autorouter is not AI. Freerouting is a free, rule-based router that routes a board you already placed, and KiCad's PCB editor has an interactive push-and-shove router but no autorouter built in. Both are useful baselines when you judge what an AI tool adds.

Step by step

Which steps of PCB design can AI do today?

From the first idea to the files you send a board house:

  • Requirements to blocks

    What AI does today

    Turns a goal into functional blocks and a first list of parts

    Tools that do it

    Celus, Circuit Mind, Cherry Blossom

    What you still check

    That the plan fits your power budget, cost and size

  • Part selection

    What AI does today

    Picks real parts from supplier catalogues instead of inventing them

    Tools that do it

    Cherry Blossom, Trace, Circuit Mind

    What you still check

    Part numbers, packages, stock, and the datasheet's limits

  • Schematic

    What AI does today

    Draws symbols, nets and labels from a description

    Tools that do it

    Cherry Blossom, Trace, Flux Copilot

    What you still check

    Every pin against its datasheet: power, decoupling, pull-ups, enables

  • Placement

    What AI does today

    Places footprints by connectivity and your rules

    Tools that do it

    Quilter, DeepPCB, Cadence Allegro X AI, Cherry Blossom

    What you still check

    Connectors at the edge, capacitors at their pins, heat, and fit in the enclosure

  • Routing

    What AI does today

    Routes the nets to width and clearance rules

    Tools that do it

    Quilter, DeepPCB, Flux Auto-Layout, Cherry Blossom

    What you still check

    USB pairs, switching loops, crystals, anything near an antenna

  • Checks

    What AI does today

    Runs electrical and design rule checks, flags problems and can fix them

    Tools that do it

    Cherry Blossom, Flux

    What you still check

    The fab's DFM check, and what rule checks cannot see

Tool capabilities from each vendor's own site and docs, October 2026. Tools change quickly; check a vendor's current docs before you choose.

Placement and routing together are what most tools mean by AI PCB layout. Vendors are open about its range: Flux's docs call its Auto-Layout ideal for simple to medium-complexity boards and warn that full convergence can take 10 to 24 hours, and Cadence aims Allegro X AI at small to medium boards.

The pattern: AI is strongest where the right answer is mostly written down (datasheets, part catalogues, design rules) and weakest where it depends on things the tool cannot see, such as your enclosure, your fab's process or how the board will be used.

The limits

What can't AI do on a PCB yet?

  • AI does not sign off high-speed, RF or power-integrity work. Controlled impedance, length matching and return paths still need an engineer and analysis tools. AI layout tools draft and route, and the responsibility for the result stays with you.

  • Most AI design tools do not simulate the circuit. They do not run SPICE or signal-integrity simulation for you, and Cherry Blossom is not a circuit simulator either.

  • AI does not know your enclosure. Mounting holes, connector positions and keep-outs come from the mechanical design, so an AI places parts well only when you tell it where those go.

  • AI places dense boards less well than a good designer. Placement carries most of the engineering judgement, and it is where AI output varies most on crowded or multi-layer boards.

  • AI is not right every time. A model can pick the wrong pinout, copy a value from an old datasheet revision, or route a net that passes the rules but should not exist, which is why every AI edit needs a check.

Cherry Blossom's own limits. Cherry Blossom is an early beta. It is not a circuit simulator, it has no real-time multi-user editing, and it is not built for high-speed or RF sign-off.

In practice

How do you design a PCB with AI?

Here is one full run in Cherry Blossom, from a sentence to fab files.

  • Open the editor and describe what the board has to do, for example: "Design an ESP32 board with USB-C power, a 3.3 V regulator, a status LED and a four-pin header for an I2C sensor." Naming part numbers helps Sakura find the exact parts.

  • Sakura drafts the schematic: it searches real parts, adds the components, connects the nets and tidies the sheet into grouped blocks.

  • Before the layout, Sakura asks "Should I start the PCB placement and routing?" Say yes and it places and routes the board, or say no and place it yourself.

  • The checks panel lists problems such as an unconnected pin. Ask Sakura to fix them, or fix them by hand in the same editor. Every change can be undone.

  • When the checks are clean, download Gerbers and drill files, a BOM, pick-and-place, a STEP model or an editable KiCad project, and send the files to any board house.

The schematic, the layout and the exported files all come from one project, so they cannot drift apart. More on this workflow in prompt to PCB.

The tools

What kinds of AI PCB design tools are there?

  • Prompt-to-board agent

    What it does

    Drafts the whole design from a description: parts, schematic, layout

    Examples

    Cherry Blossom (browser), Trace (desktop, built on KiCad)

    Best when

    You know what the board must do and would rather describe it than draw it

  • Copilot in an editor

    What it does

    Helps while you design: places parts, makes footprints, reviews

    Examples

    Flux

    Best when

    You want to drive every step yourself, with help on the way

  • Layout engine

    What it does

    Places and routes a schematic you already finished

    Examples

    Quilter, DeepPCB, Cadence Allegro X AI

    Best when

    Your schematic is done in Altium, Cadence, Siemens or KiCad and layout is the bottleneck

  • Requirements front end

    What it does

    Turns requirements into a schematic and BOM, then hands off to your ECAD

    Examples

    Celus, Circuit Mind

    Best when

    A team wants a fast first architecture before detailed design

For a ranked comparison with pricing, see the best AI PCB design tools. For tools you can use without paying, see free AI PCB design tools, and for layout-only tools, schematic to PCB with AI.

Before you order

How do you review an AI-generated PCB?

The same way you review any board, with extra care where AI tends to slip.

  • Read the schematic first. For every IC, check power pins, decoupling, pull-ups and enable pins against its datasheet, because a schematic mistake carries through to the board however well it is routed.

  • Check each footprint: compare land patterns and pin 1 against the datasheet, especially for any part the tool created itself.

  • Look at the placement: connectors at the board edge, decoupling capacitors next to their pins, the regulator's switching loop kept tight, the crystal close to its chip, nothing under an antenna.

  • Check the critical nets: USB and other differential pairs, power traces wide enough for their current, and a solid return path under fast signals.

  • Run DRC with the manufacturer's limits loaded, then upload the Gerbers to their DFM checker before you pay.

  • Check the BOM: every part number in stock, and every package matching its footprint.

For the checking step in more depth, see our guide to AI design rule checks.

Cost

Is AI PCB design free?

Some of it. Quilter has a free tier for academic and small teams, and several tools offer free trials. In Cherry Blossom the editor is free and the AI is paid. The Free plan is the full editor, by hand, with no AI. Pro adds the AI for $20 a month, with 4M AI credits and 600 AI actions a day. Ultra is $140 a month with 32M credits and the frontier models. Usage past the allowance is $5 per 1M credits, only if you turn it on. There is no API key to connect and no per-seat licence.

Elsewhere, Flux offers a free trial and meters its AI by usage, and Quilter charges past its free tier by the number of pins to route. DeepPCB sells pay-as-you-go credits after a free trial. Cadence Allegro X AI, Celus and Circuit Mind are sold to companies through their sales teams. Freerouting is free and open source, but it is not AI.

See it on your own board

The quickest way to judge any of this is to describe a board and read what comes back: the schematic, the layout, and what the verification gate says about it. It runs in the browser, with the AI included from the Pro plan up.

Start for free

Questions

Yes, for simple to medium boards, as a draft. Cherry Blossom, for example, goes from a plain-English description to a placed and routed board with Gerbers and an editable KiCad project, and Trace does something similar on the desktop. The draft still needs a person to review the schematic, the placement and the critical nets, and the manufacturer's DFM check before ordering. For high-speed, RF or power-integrity boards, AI is a starting point at best.

AI PCB layout is the part of AI PCB design that places the components and routes the copper. Layout engines such as Quilter and DeepPCB do it for a schematic you already finished, while Cherry Blossom does it after its agent drafts the schematic. Check the placement and the critical nets yourself before you order.

Not in 2026. AI now does the routine parts quickly: drawing a schematic from a description, finding parts, routing simple boards. The judgement calls stay with people: placement on dense boards, mechanical fit, high-speed and RF design, and signing off that a board is safe to build. More likely, one designer gets through more boards.

A general chatbot can explain a circuit, suggest parts and catch some schematic mistakes, but it cannot hand you a manufacturable layout on its own, because it has no ECAD editor, part library or design rules. Agents built into a real editor can: in Cherry Blossom, Sakura edits an actual schematic and PCB and runs checks on them. Our post "Can GPT-6 Astra design a PCB?" measures how far a frontier model gets.

Only after the same checks as any other board. Review the schematic against the datasheets, check every footprint and pin 1, look at placement and the critical nets, run DRC with your fab's rules and upload the Gerbers to the manufacturer's DFM checker. An AI board that passes them is as safe to build as a hand-drawn board.

It depends on the step that slows you down. To go from a description to a finished board in the browser, Cherry Blossom. To lay out a schematic you already finished in Altium, Cadence, Siemens or KiCad, Quilter. To route a board you already placed, DeepPCB. For an AI copilot inside a collaborative editor, Flux. The full comparison is in our guide to the best AI PCB design tools.

Describe a board. See what comes back.

Schematic, layout and a verification gate, in the browser. Exports to Gerbers and KiCad.

Start for free
Talk to us

By signing up, you agree to our Terms of Service and Privacy Policy.