Brand studio
Custom style adapters, negative prompts and brand guards — outputs look unmistakably yours, not like AI slop.
Generative AI
Generative AI that fits your brand language, your data and your compliance frame.
We build productive applications across image, text, audio, code and documents — with clear brand rules, clean data sources and an audit trail.
Variant space
One brief, nine scored drafts — in under two minutes.
A generative workflow produces variants in your style, scores them automatically and hands the top results to your team for selection.
Building blocks
Three building blocks for generative workflows in regulated enterprises.
Generative AI is more than an API call. It needs data plumbing, a control plane and brand stewardship — otherwise you get pretty pictures with no impact.
Pipeline architecture
Generate, score, curate, ship — we wire the full loop into your existing DAM and CMS systems.
Rights & audit
Licence-clean models, EU hosting, provenance metadata — every generation is traceable later.
Modalities
We deliver productive workflows across six modalities — image, text, code, audio, video, documents.
Each modality is wired differently — different models, different eval sets, different risks. Our architecture respects those differences.
Text & marketing
LiveOn-brand copy, briefings and translations — with tone-of-voice guard and glossary integration.
GPT-5Claude 4.7Mistral Large 3
Image & brand
LiveProduct hero shots, moodboards and variant studios — with a custom style adapter per brand.
SDXLFluxImagen 4
Code
LiveSuggestions, refactors and test generation — as an IDE plug-in or PR bot.
Claude 4.7GPT-5Mistral Small 4
Audio
LiveVoice synthesis with cloning, transcription and chapter generation — multilingual.
ElevenLabsWhisper
Video
BetaStoryboarding, edit suggestions and short marketing clips — within brand guardrails.
RunwayVeo
Documents
LiveReports, proposals and datasheets — generated from your data sources, with source tagging.
Claude 4.7GPT-5
Use cases
Four pipelines running productively at clients today.
Each case ships with a clear impact metric — generative AI as a tool, not as theatre.
- Consumer goods01
Product hero in the brand studio
Variant shoots by prompt — nine hero images per item, curated by the brand team.
–72% shoot costshipped - Real estate02
Floor plan visualisation
From architectural plan to photoreal interior render — in minutes instead of days.
8× faster listingsshipped - Service03
Voice agent for bookings
Branded voice agent — reschedules appointments and reminds customers in two languages.
+34% first-contact rateshipped - B2B04
Personalised proposals
From CRM data and product library to bespoke proposals — sales gives the final sign-off.
–60% authoring timeshipped
By the numbers
This is hafencity.dev
15+ Experts
Engineers, designers, and strategists working as one practice from our Hamburg HQ.
50+ Clients
Companies across consumer, healthcare, and B2B trust us with their digital products. Long-term partnerships are the default.
97% Recommendation rate
Repeat engagements and references our buyers actually call. Trust compounds when delivery does.
50+ Launches
Custom mobile and web products shipped from concept to maintenance — owned end-to-end by our team.
100% In-house
Strategy, design, and engineering all live at our Hamburg HQ. One team, one project lead, accountable to you from kickoff to launch.
Since 2023
Helping companies ship digital products — and growing alongside the teams we work with.
Next steps
Let's talk about your project
Book a 30-minute discovery call. We'll review your goals, surface unknowns, and outline how we would run the engagement.
Booking calendar (Cal.com)
This area embeds the external service Cal.com. By loading it you agree that a connection to Cal.com is established and data may be transferred to the USA.