Political framing
A Stanford working paper analysed 180,126 user assessments of 24 models across 30 political topics. Nearly all were perceived as significantly left-leaning. Read the paper.
AI that shares your values!
Catholic AI for your everyday work.
Write, research and plan with AI guided by Catholic principles. You bring the task; you review the work and make the decisions.
Catholic by design
Privacy controls you can review
Independent EU company
“Technology is never neutral.”
Pope Leo XIV · Magnifica Humanitas (15 May 2026)
Why the quote matters
Mainstream AI skips faith by default
Research on perceived political lean and omitted religious perspectives shows why “value neutral” is the wrong assumption for mainstream AI providers. That is not a reason to reject AI; it is a reason to find an AI provider that aligns with your values.
Faith often left out
A 2026 benchmark of 27 models found religious perspectives consistently underrepresented relative to human expectations, especially in practical personal questions. Read the benchmark.
Defaults are choices
Every assistant ships with defaults for tone, caution and what counts as a reasonable answer. A peer-reviewed AIES study of alignment-by-human-feedback finds those defaults absorb the situated values of the narrow group whose feedback shaped them, embedding selective rather than plural norms. When a vendor will not say who set them, that silence is itself a value judgement you inherit. Read the study.
Why Synderesis
Useful AI, grounded in Catholic principles.
Your faith belongs in your working life. Synderesis helps you put ideas into words, explore questions and move tasks forward with Catholic principles in view.
Our design rule is simple: AI assists; people review and decide.
Catholic by design
Catholic principles shape the product. When a question calls for Church teaching, Synderesis can ground the answer in official Catholic sources.
Dignity before efficiency
Move routine work forward while keeping decisions about people with people.
Flexible deployment
For organisational work, talk to us about private-cloud and on-premise options where your data and duty of care call for tighter control.
Privacy you can inspect
We protect your sign-in details and let you delete your account. Read our Privacy & GDPR Notice.
An EU company
Synderesis is built and maintained by an independent EU company. Where your data is processed, and by which providers, is set out in our Privacy Notice.
People stay responsible
Synderesis can draft, answer and organise. You review the work—on your own or with a team—and remain responsible for the decision.
From a first question to a finished draft. Put Catholic AI to work.
Use Synderesis for personal drafting, research and questions—and for work across a team. Customer Agent, Platform and API options bring those same principles to your websites and systems.
✓Catholic principles to guide everyday work
✓Official Church sources when a question calls for Catholic teaching
✓A private workspace for individuals and professionals
✓Customer Agent, API and deployment paths for organisations
synderesis — an inner compass for recognising what is right and acting accordingly.
The idea behind our name
Choose your product
Synderesis Spark, Pro, or Labora.
Spark is the default for fast conversation. Choose Pro for deeper reasoning or Labora for bounded work.
Synderesis SparkFast chat · Default
Provides quick, grounded conversation for everyday questions, summaries, and drafting.
Synderesis ProDeep reasoning
Uses deeper reasoning for demanding analysis, research, and drafting while keeping you in control.
LaboraYour AI worker
Carries out bounded tasks through approved capabilities, with progress, review, and cancellation controls.
Choose where to start
One Catholic AI product. Three practical ways to use it.
Start with the private workspace for your own writing, research and questions. Organisations can add a customer agent or bring Synderesis into their systems through the Platform and API. Whichever route you choose, Catholic principles, privacy and human review stay part of how it works.
Private workspace · Individuals & teams
Write, research and work through questions
Use Synderesis for yourself or in your professional work, with grounding in official Catholic sources when the task calls for it. Start on the free allocation; subscribe for €1 for your first subscription month, then €5/month.
Start freeCustomer agent
Answer routine questions. Hand over the human ones.
Give website visitors clear answers based on the products, policies and FAQs you approve, with escalation when a person should take over.
Explore the customer agentPlatform & API
Bring Synderesis into your operations
Every account can create account-scoped API keys with one shared allowance. Organisations with tighter requirements can talk to us about private-cloud or on-premise options.
Explore the platform & APIWho it's for
For your own work. For the people you serve.
Built for individuals and professionals as well as Catholic institutions and values-driven European organisations.
Private workspace
Individuals & professionals
Draft, research and work through questions with Catholic principles and human responsibility in view—whether you are joining for yourself or for your professional work.
Catholic institutions
Support diocesan, parish, school and charity administration, communication and knowledge work without treating Catholic principles or human review as optional.
Values-led businesses & public-interest teams
Bring AI into day-to-day operations without treating privacy or organisational principles as optional.
Schools & universities
Support administration, communication and research writing inside clear boundaries for staff, students and families.
Charities, healthcare & care organisations
Support administration and communication with explicit data and review boundaries. Clinical decisions remain with qualified professionals.
Get started
Start free today.
Create an account and start with a one-time free allowance — no card required. Subscribe for €1 for your first subscription month, then €5/month.
The free allocation is a one-time starting balance. Subscribing lifts it. Monthly credit reflects your payment after processor fees; your first subscription month also includes €4 promotional credit. The introductory offer is automatic for accounts with no previous paid subscription month, and does not apply to top-ups. Cancel any time, self-service, and keep access until the end of the paid period. Chrome extension connections open in a later release.
Three steps
- 1Create your account
Just your email and password. Start free without a card.
- 2Try real work
Draft, research and work through questions, with source-grounded answers when the task calls for it.
- 3Subscribe when ready
€1 for your first subscription month, then €5/month through Stripe Checkout, managed from your account. Cancel whenever.
Your next step
Ready to see whether Synderesis fits?
Joining for yourself or your professional work? Create a free account and try the workspace today. Evaluating Customer Agent or a private Platform deployment? Email us with your use case and data needs.
Start free · First subscription month €1, then €5/month · Built by an EU company · Independent EU company · hello@synderesis.eu