CORTEXSIM
Validation farm — accepting orders

Sim-to-real,
validated.

We run the trajectories. You ship the policy. Upload a URDF and a task — we hand back thousands of MuJoCo + Isaac rollouts, signed and ready to fine-tune your policy on.

Sim engines
MuJoCo + Isaac
Signed format
ed25519
Schema
cortex-traj-v1
Avg turnaround
5–14 days
The bottleneck

Sim-to-real is your #1 unsolved problem.

Every cash-rich humanoid company has the same week-to-week question: where do the trajectories come from? Hiring sim engineers takes months. Building infra takes longer. Meanwhile the policy team is blocked, the investors are asking, and Pi just shipped another demo.

Skip the infra
We run MuJoCo + Isaac at scale. No GPU procurement, no orchestration code, no domain randomization tuning.
Cryptographic provenance
Every bundle is ed25519-signed. Every trajectory carries a per-frame attestation. Verifiable in 1 line of code.
Drop-in format
cortex-traj-v1 ships as JSON: joint order, frames, validation flags. Plays with any fine-tuning stack.
How it works

Four steps. Bytes back in days.

01
Upload
Your URDF + a task description. Any humanoid, any DoF count.
02
Pay
Stripe checkout. Tier-priced, fixed scope, no surprises.
03
Validate
We run the rollouts. Domain randomization. Contact + torque + goal checks.
04
Sign + ship
ed25519-signed zip lands in your inbox. Download, verify, train.
Pricing

Pick a bundle size.

Fixed scope. Fixed price. Custom contracts available for >10k trajectories.

Demo

$5,000

100 trajectories · 5 days

Proof-of-concept bundle for evaluation

  • 100 validated trajectories
  • MuJoCo + Isaac validated
  • Ed25519-signed bundle
  • Email delivery in 5 days

Standard

Recommended
$25,000

1,000 trajectories · 7 days

Production fine-tuning dataset

  • 1,000 validated trajectories
  • Full domain randomization
  • Per-trajectory attestation chain
  • Slack channel during run

Enterprise

$150,000

10,000 trajectories · 14 days

Scaled validation farm

  • 10,000 validated trajectories
  • Dedicated compute pool
  • Custom validation criteria
  • On-call engineer support

Custom

$500K+

unlimited · 30 days

Unbounded, contract-based

  • Unlimited trajectories
  • Custom rollout scripts
  • Dedicated infra & engineers
  • SLA + on-prem option
Stack

What you actually get.

Bundle contents

cortex-sim-<order>.zip/
├── manifest.json
├── REPORT.md
├── urdf/<your-robot>.urdf
└── trajectories/
├── traj_00001.json
├── traj_00002.json
└── ... (N)
+ bundle.sha256 + bundle.sig (in email)

Verification

# Verify the bundle was produced by Cortex Sim
shasum -a 256 cortex-sim-{order}.zip
# expected: {sha256-from-email}

# Verify the signature (ed25519)
python -c "
import nacl.signing, sys
pk = nacl.signing.VerifyKey(bytes.fromhex('{public-key}'))
pk.verify(open('cortex-sim-{order}.zip','rb').read(),
          bytes.fromhex('{signature}'))
print('OK')
"

Ship the policy. We'll ship the trajectories.

Live answer in your inbox within days. Signed, verified, scoped.