Pricing.
Per-deliverable, published as ranges. Exact quotes depend on scope.
Ranges are published so you can qualify us before a call. A quote moves within its range on volume tier, taxonomy complexity, iteration cycles, and delivery channel. It does not move on negotiation.
Four Tiers
Single defined taxonomy — yours, or a Static Signal template. Modality-appropriate validation. The five artefacts. Train, validation, and test splits. Delivery to a private Hugging Face Hub repository or as a Lance tarball with SHA-256 sidecar. Invoice on acceptance.
Tier 1, plus one taxonomy iteration cycle, custom schema authoring (Pydantic and COCO, or the modality equivalent), stratified splits with a verification report, branch-aware versioning for experimental subsets, and two delivery rounds. Invoice on acceptance.
Tier 2, plus multi-class hierarchical taxonomies, two iteration cycles, a reference set curated with your domain experts, one workshop day (remote or on site), and a customer-specific verification procedure document. Invoice on acceptance and workshop completion.
Greenfield taxonomy design, a pilot dataset of 100–500 samples to validate it, full production construction, and knowledge-transfer documentation. Begins with a discovery engagement. Invoicing is phased per stage; you can exit between stages without penalty.
Negotiate scope and timeline. We do not negotiate evidence quality or the price floor. The Tier 1 floor is £5,000, including for the smallest engagements.
The Discovery Engagement · £3,000–£5,000 · One Week
Tier 4 work begins with a paid discovery engagement. The deliverable is a written engagement specification: timeline, deliverables, and exit criteria. It has standalone value — you may take it to another supplier. The fee is non-refundable and is the only commitment until a full engagement is signed.
Add-ons
Verification Continuity Retainer · £20,000–£40,000 Per Year
A twelve-month standing arrangement: unlimited re-verifications, evidence-pack refreshes, compliance updates as standards land, advisory access of eight hours per quarter, and priority in the engagement queue. Suited to customers whose deliverables face recurring audit.
Included in Every Engagement, No Charge
Receipt acknowledged with a SHA-256 manifest. EU-resident processing. Single-operator access; no subcontractors without written consent. Raw inputs deleted within 30 days of acceptance. Deletion on request within 7 working days, with signed attestation.
Every custody event — receipt, processing, delivery, deletion — recorded in an append-only log. Full trail delivered at handover.
Transparency-log inclusion proofs and signed erasure attestations. In development, available from summer 2026; included in deliverables from availability, at no charge.
What a Sample Is
A sample is the natural unit of the modality: an image, a document, a row of structured data, an audio clip. Mixed-modality datasets are counted by primary unit.
Where the Premium Goes
Independent audits of popular dataset hosts find licence information omitted in over 70% of cases and incorrect in over 50%.
The premium over commodity annotation reflects what ships with the labels: verified content hashes per sample, a Merkle integrity tree, C2PA content credentials, SLSA attestation, an OMS signature, the Articles 9–15 evidence pack, and recipes to check all of it independently.
Terms
Acceptance requires loading the dataset and running one verification recipe successfully. Invoices are payable within 30 days. Tier 4 invoicing is phased per stage, with exit between stages and no penalty.
Prices are in GBP and exclude VAT where applicable; engagements may be contracted in EUR at the prevailing rate on the scope date. An NDA is in place before any data discussion, and a GDPR Article 28 data processing agreement is executed with every engagement.
Ranges are reviewed quarterly and hold for engagements scoped within 90 days of issue. Exact instrument versions are pinned in each signed engagement scope and recorded in every evidence bundle.