Sanctum: Ship features to simulated users before real ones
Our high-fidelity user models speak, watch, listen, and interact like your customers.
Details
- External ID
- 95397
- Source
- YC
- Company
- Sanctum
- Product
- Sanctum: Ship features to simulated users before real ones
- Website domain
- withsanctum.com
- Launched
- Nov. 11, 2025
- Cohort
- Fall 2025
- Upvotes
- 113
- Upvotes percentile
- 0.7706422018348624
- Tags
- Artificial Intelligence, Developer Tools, B2B, Analytics, Infrastructure
- Fetched at
- Sept. 30, 2026, 5 p.m.
- Updated at
- Sept. 30, 2026, 5 p.m.
Enrichment
- Theme
- voice AI agents and infrastructure
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- B2B
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- simulated user testing for products
- Manually corrected
- False
Could you build this?
Partial Creating a mock UI where LLMs play customer personas is trivial, but building synthetic multimodal agents that accurately reproduce real human browser/app interaction patterns, cognitive friction, and UI failure modes is a research problem.
What it would actually take: The system needs headless browser simulation (Playwright/Puppeteer) driven by multimodal vision-language agents equipped with realistic human perceptual/cognitive constraints and simulated user behavioral histories. The hardest part is synthetic benchmark fidelity—ensuring simulated feedback actually correlates with real human conversion/usability metrics rather than echoing generic LLM sycophancy. Requires applied ML researchers, human-computer interaction (HCI) researchers, and large-scale agent orchestration systems.
Competitors
Other products that read as similar to this one — 204 launches clear the similarity bar, closest 8 shown.
Attention rank: #43 of 205 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 5 days after the earliest competitor.
- Anana: AI Workspace for Hospitality Commercial Teams · yc · 2026-09-17 · 54 upvotes · similarity 0.44
- Studio: The simulation engine for market behavior · yc · 2026-08-21 · 14 upvotes · similarity 0.42
- Foresight - Understand your consumers better than ever · yc · 2026-05-10 · 8 upvotes · similarity 0.42
- Awen · yc · 2026-04-01 · 18 upvotes · similarity 0.41
- Block/buzz: a workspace built for teams of humans and agents · hn · 2026-06-22 · 21 upvotes · similarity 0.40
- Deep Interactions — Collaborative AI Builder for Teams · yc · 2026-05-18 · 98 upvotes · similarity 0.40
- CharacterQuilt: AI infrastructure for marketers · yc · 2026-05-11 · 10 upvotes · similarity 0.40
- Amplitude AI Feedback — listen to users at scale · yc · 2025-11-12 · 86 upvotes · similarity 0.40
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.