15:30
CULTURE
✓ verifiedMuseum / exhibition
Matching live candidates only
Berlin MVP · Private beta in preparation
Your Berlin plan.
No invented shortcuts.
Outlin turns a natural-language request into a structured event and day plan — and checks hard requirements before anything is recommended.
“The LLM proposes.
The symbolic layer decides.”
Website and MVP are in development. Not yet a public booking platform.
01
“Plan an evening in Berlin: museum, dinner and comedy — wheelchair accessible, maximum €120 for two.”
Understood as
Berlin2 people≤ €120Accessibility
URoute is recalculated18 min
18:00
FOOD
✓ verifiedRestaurant nearby
Constraint-filtered selection
No safe comedy option?
Outlin shows a partial plan instead of inventing one.
01 / PRODUCT
More than a chatbot.
A controlled planning process.
Outlin separates language understanding from decision-making. An LLM interprets the request. Deterministic logic then decides which events and stops are actually allowed to satisfy it.
Hard requirements filter.
Budget, location, date, age, category and accessibility are not outweighed by unrelated benefits.
Preferences rank.
Only candidates that survive every hard requirement are ranked by fit and preference.
Uncertainty stays visible.
Missing prices, coordinates or availability are never guessed. An honest “unknown” is better than a false plan.
02 / FEATURES
From an idea to an
actionable Berlin day.
Natural Language Planning
Free-form requests in English or German become structured planning data.
Aa
Hard Constraints
Invalid candidates are excluded — not merely ranked lower.
≠
Multi-Stop Plans
Culture, restaurants and entertainment can form one day or evening itinerary.
•••
Live Event Data
Data from multiple providers is normalised and checked again before use.
↻
Mobility
Public-transport routing and external mobility handoffs turn results into a usable plan.
→
03 / HOW IT WORKS
Probabilistic understanding.
Deterministic decisions.
- 01
Describe
Tell Outlin what you want to do in your own words.
- 02
Structure
Outlin identifies date, location, budget, group and other constraints.
- 03
Verify
Live candidates pass hard filters and the output guard.
- 04
Plan
Only admissible stops are ranked, connected and shown transparently.
04 / TRUST BY DESIGN
Trust starts where
the system can say no.
When evidence is missing, Outlin is designed to clarify, show a partial plan or return no match — instead of inventing facts.
Verified
The information comes from structured state or an identified source.
Estimated
Orientation values are labelled as estimates, not confirmed facts.
Unknown
What a source does not provide remains unknown and creates no operational effect.
400cases in the frozen
controlled benchmark
controlled benchmark
92.5%perfect cases for the
guarded pipeline
guarded pipeline
2hard-constraint violations
versus 71 for one-shot LLM
versus 71 for one-shot LLM
Controlled benchmark results using the same underlying model. Not a claim of universal real-world accuracy.
05 / DATA & PARTNERSHIPS
Transparent about
integration status.
Technically supported
- Ticketmaster Discovery APIEvents & venues
- kulturdaten.berlinCulture events
- OpenStreetMap / OverpassRestaurants & places
- transport.restPublic transport in the VBB network
- NominatimOptional address geocoding
Officially requested
- VBBOfficial API access
- Resident AdvisorPartner feed / data integration
- TicketmasterDistribution / partnership
A listing does not imply an existing partnership or approval. Requested integrations are clearly marked.
partners@outlin-berlin.de ↗06 / CURRENT STATUS
MVP built.
Beta in preparation.
The working product prototype supports constraint-checked planning, live sources, multi-stop flows and mobility handoffs. Data access, production operations and testing with real users are now being prepared.
- ✓Guarded planning pipeline
- ✓Responsive web MVP
- ✓Live and offline data paths
- ↻Production & private beta
PARTNERS · DATA · BETA
Berlin is complex.
Your plan should not be.
Working with event, culture or mobility data? Or interested in testing Outlin as a beta user?