copperhead
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Pay to not run it yourself.

copperhead is open core. The CLI is free and always will be, and it does the real work on its own. You pay to host it, to work as a team, or to give an auditor what they ask for.

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  • CLI

    Free

    Apache-2.0, forever

    Design on your own, on your own machine.

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    Includes:

    • The full agent: do, create, init, check, watch
    • Bring your own Claude or GPT-5 key
    • Runs on your KiCad files, in your own git repo
    • Plain markdown, JSON, and KiCad output. No lock-in.
    • Runs locally, never metered
    • Community support
  • Most popular

    Cloud

    $49per user / month

    Free for open hardware repos

    Hosted runs on private repos, with a web viewer.

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    Everything in CLI, plus:

    • Hosted runs, no local setup, from anywhere
    • Private repositories
    • Web viewer: chat, live schematic and board render, ERC/DRC status
    • Run history and shareable check reports
    • One-click gerber, DXF/STEP, render, and BOM export
    • BYO key, or managed inference with 200 credits a seat

  • Team

    $49per user / month

    + $199 / mo platform

    Cloud, with governance and CI for a whole team.

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    Everything in Cloud, plus:

    • CI bot: run check as a required PR status check
    • Shared, versioned constraint libraries across the org
    • SSO / SAML, role management, central billing
    • Managed credits pooled across the team
    • Shared run history

  • Enterprise

    Customannual

    Self-hosted, built for procurement, one price a year.

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    Everything in Team, plus:

    • Self-hosted or VPC, so design data never leaves your network
    • Altium support beyond KiCad
    • RBAC, security review, dedicated support and an SLA
    • An audit trail your compliance team can hand over
    • Flat annual license, no per-run metering

01 · Metering

Three ways to pay for a run.

Every design run is an agent loop that spends model tokens. copperhead never subsidizes those tokens. You either bring your own key, or run on managed inference that is metered above cost.

  • Mode A

    Bring your own key

    Supply your own Claude or GPT-5 key. copperhead runs the agent but never touches your token bill. You pay for the platform, not the tokens. Predictable, and open to you on every paid tier.

  • Mode B

    Managed inference

    Let copperhead run the model. Each seat includes a monthly allowance of design credits; overage is metered at model cost + 20%, or bought as top-up packs. Hard spend caps on every seat and org, with runaway bills refunded.

  • Mode C

    Flat annual

    No per-run metering. A flat annual license sized to expected volume, with inference self-hosted in your own environment or routed through a private endpoint. One predictable number for procurement.

02 · Compare

The whole ladder, side by side.

FeatureCLICloudTeamEnterprise
PriceFree$49 / user / mo$49 / user / mo + $199 / moCustom, annual
ReposYour own, localPrivate, hostedPrivate, hostedPrivate / VPC / self-hosted
InferenceBYO keyBYO key or managedBYO key or managed (pooled)Self-hosted / private, flat
Managed creditsn/a200 / seat / mo200 / seat, pooledNegotiated volume
Overagen/amodel cost + 20%model cost + 20%None (flat)
CI bot (check)ManualManualRequired PR checkRequired PR check
Shared constraint librariesLocalPer-userOrg-wideOrg-wide
SSO / RBACn/an/aSSOSSO + RBAC
Audit trail artifactIn repoIn repoIn repoCompliance-grade
SupportCommunityEmailPriorityDedicated + SLA

03 · Open core

Open source, and kept that way.

Paid plans only ever add hosting, collaboration, and governance on top of files you already own. They never wall off the work itself.

Building in the open? copperhead Cloud is free for public repositories released under CERN-OHL-S or an OSHWA-certified license. Managed inference is included within fair-use limits. The open hardware you ship is the best demo we have.

Startups and non-profits: 50% off · accredited education: free

Apply for open tier

  • Plain text, in your repo, at every tier

    Paid plans add hosting, collaboration, and governance on top of files you fully own. No proprietary format, no lock-in.

  • Cancel any time

    A paid plan never strands a design. Drop the subscription and you fall straight back to the free CLI, working on the very same files.

  • A grant-funded commons

    The free CLI is funded by grants, not by hosted revenue, so it stays free for good. It is never held hostage to the paid tiers.

Questions on volume, credits, or self-hosting? Talk to us or book a demo call.