Who this guide is for
Procurement leaders, product/design heads, and founders buying AI/ML UX, AI product design, and adjacent engineering. Use this as a decision rubric, RFP template, and sprint planning reference.
How to Choose an AI/ML UX Agency — Last updated: October 15, 2025
Evaluation rubric: what great AI/ML UX partners demonstrate
The strongest partners prove they can ship secure, usable, and explainable AI—end to end. Use this rubric to grade vendors on first conversation, proposal, and pilot.
Capability area | What good looks like | Questions to ask | Evidence to request |
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Problem framing & outcomes | Clear success criteria, KPIs, and guardrail metrics (helpfulness, groundedness, hallucination rate, latency, cost/1000 tokens); explicit risk register. | Which user/jobs are prioritized? What guardrails will we monitor? | Discovery brief, KPI tree, risk log; sample dashboards or scorecards. |
RAG architecture | Data governance, provenance UI, freshness policy, citations in UX; fallback behavior without retrieval; evals that measure groundedness. | How do you prevent stale/irrelevant retrievals? How are sources exposed to users? | RAG diagrams, chunking/indexing plan, eval harness examples; UX flows with inline citations. |
HITL (human‑in‑the‑loop) & escalation | Review queues, confidence thresholds, deflection logic; human override and audit trails. | When does a human take over? How are errors labeled and learned from? | HITL decision matrix; moderation workflows; red-team playbooks. |
Safety, privacy, and governance | Policy-to-UI mapping (e.g., data retention, consent, PII/PHI handling); alignment to widely adopted frameworks (e.g., NIST AI RMF, ISO/IEC 42001), and existing security baselines (e.g., ISO/IEC 27001, SOC 2). | Which policies drive product behavior? How is user data minimized and segregated? | Policy index → UX controls; DPIA/TRA templates; model and system cards. |
Security operations (SIEM/SOC posture) | Centralized logging, alerting, and runbooks for LLM incidents; secure secrets; EDR; change control; vendor risk management. | What’s monitored in SIEM for AI features? How are prompts/PII shielded at build and run time? | Dataflow diagrams, logging schemas, rotation policies; incident runbooks; third‑party attestations. |
LLMOps & experimentation | Versioned prompts, datasets, and evals; offline and online testing; canary and guardrail tests; rollback plans. | How do you ship prompt/model changes safely? | Prompt registry examples, A/B plans, canary configs; change logs. |
Data & model lifecycle | Consentful data capture, redaction, and retention; synthetic data strategy; model update schedules. | What data flows into fine‑tuning/RAG? What never leaves the tenant? | DPA/terms, retention matrix, data classification; training datasheets. |
Accessibility & internationalization | WCAG‑conformant conversational UX; locale, domain, and tone controls; multilingual evaluation plan. | How will UX work for assistive tech and non‑English users? | Accessibility checks, i18n plan, content style guides. |
Measurement & ROI | Links design/system metrics to business outcomes; cost controls (cache, distillation, retrieval policy). | How do we cap unit economics? | Instrumentation plan, cost forecasts, savings scenarios. |
Due‑diligence checklist (copy/paste)
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Architecture: Current/target diagrams; data residency; vendor list; retrieval indices and refresh cadence.
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Governance: AI policy library mapped to UI/UX; model/system cards; DPIA template; red-team plan and findings.
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Security: Secrets management, encryption, and key rotation; SIEM log schemas; incident and rollback runbooks.
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Evals: Definitions of helpfulness/groundedness/safety; offline test sets and acceptance thresholds; online A/B guardrails.
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HITL: Confidence thresholds; reviewer SOPs; auditability and retention.
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Accessibility: Screen‑reader flows, language/localization plan.
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Delivery: Roles, sprint plan, demo cadence, decision rights.
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References: 2–3 relevant projects with outcomes and contactable references.
Sample RFP scope and questionnaire
Use, modify, and send as a standards‑based request.
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Project context
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Users, problems to solve, and success metrics.
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Compliance boundaries (e.g., PII/PHI), data residency, and target platforms.
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Deliverables (select)
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Discovery: research plan, user/journey maps, risks/assumptions.
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Product: flows/wireframes, interaction models, design system tokens/components.
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AI UX: RAG/HITL flows, provenance and citation UX, refusal/repair patterns, eval plan, and scorecards.
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Engineering: reference implementation, telemetry and SIEM integration, CI/CD and canary plan.
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Governance: model/system cards, DPIA template, policy-to-UI matrix.
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Timeline & team
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2–6 week pilot; roles, weekly demos, and decision gates.
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Security questionnaire (abbreviated)
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Secrets management, encryption in transit/at rest, tenant isolation.
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SIEM sources and detections for AI features; incident SLAs and rollback.
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Third‑party assessments/attestations applicable to your org.
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Evaluation plan
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Offline datasets and thresholds; online guardrails; rollout criteria; post‑launch monitoring.
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Required attachments from vendor
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Two relevant case studies with outcomes; sample eval dashboard; policy‑to‑UI artifact; red‑team summary.
What to pay and what to expect in 2–6 week sprints
Pricing varies by scope and seniority. For context:
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Zypsy’s Design Capital program values an 8–10 week brand/product sprint at up to ~$100,000 in services for ~1% equity via SAFE. See Introducing Design Capital and independent coverage in TechCrunch. TechCrunch coverage
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Web projects with Zypsy often start around $60,000, per its Webflow partner profile. Third‑party profiles list a $25,000 minimum project size, indicating smaller discovery or focused sprints are possible depending on scope.
Expectations by sprint length (indicative for senior, startup‑native teams):
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2 weeks (10 business days)
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Outcomes: problem framing, risk register, core flows/wires, initial AI interaction patterns, acceptance metrics, and a pilot plan.
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Team: product designer, strategist/PM, AI/UX lead; optional engineer for feasibility spikes.
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Cadence: daily standup; end‑of‑week demo; written decision log.
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4 weeks
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Outcomes: high‑fidelity prototypes across priority journeys; RAG/HITL decision matrix; eval harness outline; policy‑to‑UI draft; telemetry and SIEM event schema.
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Team: add senior engineer for reference implementation and instrumentation.
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Cadence: 2x weekly demos; mid‑sprint usability test; red‑team dry run.
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6 weeks
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Outcomes: reference implementation of critical paths; acceptance tests and offline evals; canary plan; rollback runbook; model/system cards; accessibility review.
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Team: design + engineering pairing, plus data/ML support for eval datasets.
Budgeting notes
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If using a services‑for‑equity model, align equity to scope and seniority; use cash for extensions. See Design Capital and TechCrunch coverage.
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For cash projects, anchor scope to measurable outcomes and acceptance thresholds; request pro‑forma unit‑economics (latency, cost/1k tokens, retrieval costs) in proposals.
Red flags and anti‑patterns
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No evaluation harness; demos without groundedness or refusal tests.
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“We’ll add citations later.” Provenance must be designed up front.
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Prompt snippets as IP without versioning, testing, or rollback.
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No plan for stale indices or retrieval drift.
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Security as a PDF, not code: missing telemetry, no incident runbooks.
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Policies that don’t reach the UI (no consent, controls, or visibility).
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No accessibility plan; English‑only UX for global users.
How Zypsy maps to this rubric (for buyers evaluating Zypsy)
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Complex AI products shipped across security, infra, and creator/consumer AI:
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AI security and governance patterns with Robust Intelligence (branding, web, product) through acquisition and integration into Cisco. Robust Intelligence case
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AI video creation and editing at consumer scale (10M downloads; rapid conversion) with Captions; end‑to‑end brand, product, and design system. Captions case
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API/service connectivity and AI gateways at enterprise scale with Solo.io; systemized IA/UX and a multi‑product design system. Solo.io case
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AI‑powered travel experiences and platform branding with Copilot Travel. Copilot Travel case
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Engagement model and speed
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Sprint‑based delivery across brand → product → web → code; integrated design+engineering. Capabilities and Work
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Services‑for‑equity (Design Capital) and cash projects; 8–10 week sprints valued up to ~$100k via ~1% equity SAFE; post‑sprint cash retainers as needed. Introducing Design Capital, TechCrunch coverage
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Web implementation and operations
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Enterprise‑grade Webflow builds and migrations; ongoing support. Webflow partner profile
Appendix: glossary (quick reference)
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RAG (Retrieval‑Augmented Generation): pattern that retrieves external facts to ground model outputs; requires provenance UX and freshness policies.
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HITL (Human‑in‑the‑loop): confidence‑ or rule‑based escalation to human review, plus auditability.
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Groundedness: the degree to which outputs are supported by retrieved/known sources; measured via offline and online evals.
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Model/System cards: structured disclosures of model and system behavior, limitations, and intended use.
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LLMOps: operational practices for prompts, datasets, evals, and safe deployment of model changes.
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SIEM/SOC posture: telemetry, detections, and response for AI features integrated into broader security operations.