Quilter — AI-driven PCB layout automation with physics validation. Best for PCB layout automation for test fixtures and harnesses, cutting 4-6 weeks off board bring-up, Rapid iteration of IC evaluation boards, reducing layout from weeks to hours, Design validation boards, shrinking validation cycles from months to days. Free to use.
PCB layout automation for test fixtures and harnesses, cutting 4-6 weeks off board bring-upRapid iteration of IC evaluation boards, reducing layout from weeks to hoursDesign validation boards, shrinking validation cycles from months to daysBackplane and interconnect boards, compressing timeline from 30+ days to under 24 hours
Not ideal for
Boards with over 1000 components or pin density above 20% (current sweet spot)Designs requiring blind or buried vias (still in development)RF designs needing pre-routed RF nets (manual pre-routing required)High-density interconnects where length matching is critical (feature coming soon)Teams seeking a fully autonomous replacement for human PCB designers
Quilter delivers on its promise of hours-not-months PCB layout for a specific sweet spot. If your boards fit its capability matrix, it's a no-brainer productivity multiplier. For high-pin-density or advanced RF designs, wait for future releases.
Quilter is a genuine breakthrough for electronics design teams stuck in layout bottlenecks. Its physics-first reinforcement learning approach is unique in the EDA space, providing real validation unlike typical autorouters. We recommend it for teams working on test fixtures, validation boards, or backplanes with moderate component counts (100-1000) and pin density below 20%. The ability to iterate on multiple stack-ups and form factors in parallel is a game-changer for R&D speed. However, Quilter is not yet suitable for very dense designs (e.g., smartphone motherboards) or boards requiring blind/buried vias (in development). RF nets still need pre-routing, and length matching is coming soon. Compared to traditional EDA autorouters, Quilter offers AI-driven exploration and physics checks, but it's an additive tool—you still need your preferred CAD for final polish. Pricing by pin count scales fairly, but per-pin costs can add up for large boards. The free tier is generous for exploration. If you're a startup or enterprise with standard PCB needs, Quilter will dramatically compress your timeline. If your work involves advanced HDI or RF, wait for roadmap updates.
Skip Quilter if Skip Quilter if you only design simple single-layer boards, don't use supported ECAD tools (Altium, Cadence, Siemens, KiCad), or need full manual control over every trace.
Latest from Quilter
Updated 4 days ago
Across the latest 2 updates: 1 feature update and 1 news mention.
How likely is Quilter to still be operational in 12 months? Based on 6 signals including funding, development activity, and platform risk.
funding runway
80
website health
90
github activity
50
category mortality
70
wrapper dependency
100
hyperscaler overlap
80
About Quilter
Quilter is a physics-driven AI platform that automates PCB placement and routing, reducing layout time from months to hours. It uses reinforcement learning to generate multiple candidate boards, validating every trace against physical constraints. Designed for electronics engineers, PCB designers, and R&D managers in industries like aerospace, semiconductor, robotics, and consumer electronics, Quilter integrates with existing workflows (Altium, Cadence, Siemens, KiCAD). Key features include physics-aware design (identifies bypass caps, impedance-controlled nets, differential pairs), iterative exploration of stack-ups and form factors, transparent design review with constraint feedback, and seamless board handoff in native CAD formats. Pricing scales by pin count, not seats, with enterprise and free tiers. Compared to manual layout or traditional EDA tools, Quilter offers a paradigm shift in speed and iteration capability, though it currently has a 'goldilocks zone'—best for boards with 100-1000 components and under 20% pin density.
Researching Quilter? Skip the guesswork.
Tell us what you want to build — we'll match the AI tools that fit your goal, budget & existing stack.
Key Features
Physics-driven AI for automated PCB placement and routing
Physics-aware design identifies bypass capacitors and impedance nets
Supports differential pairs and impedance-controlled nets
Transparent design review with constraint feedback
Seamless board handoff in native CAD format
Iterate multiple stack-ups, manufacturers, and form factors
Works with Altium, Cadence, Siemens, KiCAD
Automated BGA fanout generation (beta)
Handles 100–1000 components per board
Handles up to 2000-5000 pins to route
Real-world workflow fit
Concrete scenarios for the personas Quilter actually fits — and what changes day-one when you adopt it.
Aerospace PCB designer
You have a 12-layer backplane with impedance-controlled nets and differential pairs, and need a layout ready for TRR in 2 weeks.
Outcome: Upload the project from Altium, set constraints, run Quilter; within hours you get multiple candidates validated by physics simulation, cutting layout from weeks to under 24 hours.
Semiconductor validation engineer
You need an IC evaluation board that's bring-up ready in a single workday.
Outcome: Upload the board outline and pre-place connectors; Quilter's RL explores thousands of options; first candidates appear within an hour; final fab-ready design in under 4 hours.
Consumer electronics R&D manager
Your team needs to iterate on multiple form factors and stack-ups for a new product, but layout is a bottleneck.
Outcome: Submit the same schematic to Quilter with different parameters; run parallel jobs overnight; compare candidates in the morning; compress 4 weeks of layout into a single day.
Routing backplane and interconnect boards in under 24 hours
Iterating on multiple stack-ups and form factors for consumer electronics market windows
Limitations
Quilter focuses solely on PCB layout and routing. It does not include schematic capture, SPICE simulation, or signal integrity analysis beyond what is built into its physics engine. The tool may not be optimal for designs with unconventional geometries or strict non-standard requirements where you need manual control over every trace. Pricing per board based on pin count means costs scale with complexity, and exact per-pin rates are not public, requiring a sales call for detailed quotes. Clearance constraints and BGA fanouts are still in development as of April 2026, so high-density designs may require manual pre-routing.
12-month cost
Project the real annual outlay, including the implied monthly cost when only an annual tier is published.
Annual total
Free
Over 12 months
Effective monthly
—
—
Vendor list price only. Add-on usage, seat overages, and contract minimums are surfaced under Hidden costs & gotchas.
Plans compared
For each published Quilter tier: who it actually fits, and what it adds vs. the previous tier. Cross-reference the cost calculator above for projected annual outlay.
Free Tier
Free
Ideal for
Individual engineers or small teams exploring Quilter's capabilities on a single low-pin-count board
What this tier adds
Free entry point with self-service support; limited to community forums and documentation
Integrations
AltiumCadenceSiemensKiCAD
Hidden costs & gotchas
What the public pricing page doesn't put in bold. Captured from pricing-page footnotes, contract terms, and recurring complaints.
•Pricing scales by pin count; exact per-pin rate requires a sales call
•If BOM changes by more than 10%, that counts as a new project
•Enterprise tier pricing is custom, not listed publicly
Where the pricing makes sense
The company stage and team size where Quilter's pricing actually pencils out — and where peers do it cheaper.
Quilter's pay-per-project model (by unrouted pin count) is ideal for teams that have sporadic layout needs — no annual licenses. For very low pin counts, manual layout may be cheaper. For high-pin-count boards, costs can add up, but the speed gain may justify it. Alternatives like Altium's traditional licensing are seat-based and expensive regardless of project volume.
Setup time & first value
How long it actually takes to get something useful out of Quilter — broken out by persona, not the marketing-page minute.
For first-time users, guided onboarding takes about a day. Uploading a project, defining constraints, and running Quilter typically yields first candidates within an hour. Iterations within the same project take minutes to hours depending on complexity. Free tier users get self-service access; enterprise customers get a dedicated technical account manager and quarterly design reviews.
Switching to or from Quilter
How to bring data in from common predecessors and how to get it back out — written for the switcher, not the buyer.
Migrating in
→From manual Altium layout: export project, upload to Quilter, define constraints, let AI route — handoff back to Altium for final DRC
→From manual Cadence Allegro layout: similar workflow with native Allegro output
