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Buying a SaaS replacement with acceptance and migration terms

Short answer

Buy a SaaS replacement with the switchover day settled: who moves the open cases, on which work the team accepts the application and what happens if work cannot start. These agreements shape the scope of the order as much as the program's screens do.

How we workDetails ↓

  1. 01Call30 minutes with an engineer, free
  2. 02PrototypeA working system on your process and data, free
  3. 03ImplementationTarget and fixed price in the contract; 50% at signing
  4. 04Acceptance50% once the agreed target is met
net per application, fixed price before contract
from €3,000
from signing the contract to acceptance
4–10 weeks
free prototype on your documents
€0

We belong to the OpenAI and Anthropic partner programmes and learn through their official courses. What this means ↓

Author: Syntalith · 3 min read

Example: the morning request inbox
Agent · ready

Statistics

Replacing SaaS: statistics 2026

3.1 mo.

payback of €3,000 at 300 cases a month: €1,396 of work today, €422 with checking and the model. Scenario.

Figures checked: 22 October 2026

An employee must be able to carry on with a case the day after the switch, so acceptance also covers cases moved from the old system. Exporting an application, for example from Power Apps, moves the configuration, but the data and the history need a separate plan.

A plan for the switchover day
  • A list of open cases and the person who moves them
  • Acceptance on the team's real cases
  • A condition for going back to the old system
  • Access to the old system during the transition

An employee must be able to carry on with a case

Suppose a company replaces its system for internal orders. The new application creates an order from scratch correctly. On the day of the switch, though, some orders already have an agreed scope and are waiting for delivery. The employee needs to find the earlier agreement and record what happens next without collecting the information again.

The offer should make clear whether such cases will be moved or finished in the current tool. If they are to go into the new application, the team should be able to assess a sample continuation before go-live. A demo of creating a new order does not cover this situation.

The company's part in preparing the data also matters. The contractor can move the agreed scope, but someone on the client's side has to explain unclear labels or name the person responsible. Name these tasks and put them in the plan. Otherwise the date rests on the assumption that the data is ready, although nobody has confirmed it yet.

Acceptance should concern the work you are buying

Useful acceptance criteria can be written in the users' language. The person taking over an order finds it, understands the current agreement and takes the next step needed. The manager sees the state of the case, and the administrator can grant the required access. That is a starting point for agreeing the scope the contractor must show on the right data and roles.

Separate what is needed for go-live from changes that can be made later. The company should know who decides on the start and how unresolved problems will be described.

Judge an offer for a ready product or an integration the same way. A supplier may have a migration and rollout service that meets the company's needs. Compare the scope of the switch, the team's duties and the help afterwards.

Settle what will really be handed over

The application file is one part of the handover. Microsoft describes Power Apps canvas app packages as basic import and export, and points to solutions as the recommended way to manage the life cycle. So when you buy, also settle the environment, the connections needed and responsibility for go-live.

A custom solution needs agreed access to the code, the data and the documentation. An export should keep the links needed to recreate the work, also if you change contractor later. The buyer should understand which external services will still be needed and who will manage them.

The switchover plan should also describe the case where go-live is postponed. The team has to know where it works until then and what happens to changes made after the migration was prepared. Whether you can keep using the old tool depends on the terms agreed with its supplier.

After the start you need a person who takes reports and a way to clarify missing or conflicting data. Settle what help at go-live covers and what will be part of later maintenance. Then the offer also describes the first weeks of work.

Talk to Syntalith about one open case and the planned date of the change. We can discuss the proposed handover scope, the team's part and how readiness for work is judged. A custom application or automation at Syntalith costs from €3,000 net (pricing).

What it costs

Scenario: 300 cases a month
Today
300 cases × 8 min = 40 h (€1,396)
With the system, a person checks the result in 30% of the time
€419
Model, 1 call per case, Claude Sonnet 5.5
€3
Cost of one case
€4.65 today, €1.40 with the system
Saving
€974 a month

Payback of €3,000

3.1 months

The volume, the time and the checking share are the scenario's assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat. Model: 3,000 input tokens and 300 output tokens per call at Anthropic's rates, at the ECB rate of 1.1205 USD per euro on 22 October 2026.

What we measure in the trial
  • The time from receiving a case to the result, before and after the change
  • Cases the application passed to a person
  • Corrections by the person checking
  • The cost of the model and maintenance at the target volume

Where to start

In the free review we choose one process and count the volume and the team's working time, and within 2 working days you receive a written summary with a price. We build the automation as part of AI automations, from €3,000 net.

Worked example · Scenario

How we count the payback: replacing SaaS

We run the same count for your team in the free review.

€4,363

a month for handling 1,500 job emails

Payback: 0.8 mo.

5 minutes to read an email and reply and checking in 15% of the old time are our assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat, for companies with 10 or more employees. Model cost: Claude Sonnet 5.5, about 3,000 + 600 tokens per message with a draft reply, at the ECB rate of 1.1205 USD per euro on 22 October 2026.

See the full calculation →

This is how we implement it in companies

All case studies →

Client results.

All projects →
foap.comcustomer service

foap.com customer service: 95% of replies are sent automatically.

Users from several countries write to foap.com, in several languages. The system reads the entire conversation and the terms of that person, and then sends a response in that person's language. Questions about money and exceptions go to the team with a ready draft, so they have to check and send them.

the system sends the answers itself, without human typing
95%
time from the arrival of the e-mail to the ready response (median)
30 s
e-mails that require a response receive a ready-made draft
100%
less work for every 1000 answers (estimate)
47 h

Data from foap.com production, October 20-21, 2026. Estimate: 3 minutes for handwritten response.

How foap.com customer service works →
Sample messages. Money matters always come to the person.

Other implementations

jaktako.design

studio projektowe

−87%

Time to look for new customers, every day

4 hours → 30 min

approx. 73 hours less per month (21 days of work)

according to the studio

How the agent loop works →
Signature Estates

real estate

approx. −90%

Operator time spent browsing portals, per day

2–3 hours → 20 min

approx. 45 hours less per month (21 days of work)

respect · contact the seller 5 minutes after the announcement

How the agent finds property listings →
Kuba Koziej, CEO and co-founder of MoreGrowth and board member at Natu.Care

Kuba Koziej

CEO and co-founder, MoreGrowth

„We started with my own AI agent. During the training that followed, I learned to build new applications myself. Today I am bringing this way of working with AI into my business. Working with Syntalith gave me exactly the skills and tools I needed.”

View the original training review on LinkedIn ↗

When an off-the-shelf tool does not fit, we build your own.Book a free process review (30 min) →

How we build automation and agents

From a conversation to a working system in four steps.

  1. 01 · 30 min

    Free process review

    €0

    You're talking to an engineer. You receive the written plan within 2 business days.

  2. 02 · 5 days

    Free prototype

    €0

    The system works on 20-100 cases that your team has already handled. You see every result.

  3. 03 · 2–16 weeks

    Build

    50%

    Fixed price and goal written in the contract. First installment upon signing.

  4. 04 · after reaching the goal

    Reception

    50%

    You pay the second installment when the system reaches its target on your cases.

How a free prototype is created

Mon.

We set a goal

What result do you consider good?

Tue–Wed

The system is working

It goes through your affairs, one by one.

Thu

We compare

We check every difference with the team's work.

Fri

Result and price

List of errors and fixed implementation price.

You choose the matters. We anonymize them upon request, they stay in the EU and we delete them after the test.

On the market, such a test usually costs from PLN 3,000 to PLN 8,000.

Book a free process review (30 min)

We establish a prototype during a free analysis.

Data checked on October 25, 2026.

„Is my data safe?”

Yes. You choose where they go: from your company account to the model on your server.

  1. 00Employee's private account

    Customer and company data ends up in an account that the company cannot see or control. There is no data processing agreement, so it is a violation of the GDPR. When an employee leaves, the chat history goes with them.

  2. 01ChatGPT or Claude corporate account

    The provider does not use your data to train models. A copy of the queries remains in his logs for up to 30 days.

  3. 02API with zero retention (ZDR)

    The provider processes the request and does not save anything. It requires his consent, we prepare the application together.

  4. 03Processing in the EU

    Queries are counted and stored in Europe: OpenAI in the EU region, Claude via clouds with the EU region.

  5. 04Model at your place

    The open model runs on your server or in your cloud in the EU. The data does not go outside the company.

What we do with every implementation

  • Confidentiality agreement and data processing agreement before we receive any data.
  • You choose the cases for the prototype and we anonymize them upon request.
  • The data stays in the EU and we delete it after the test.
  • Corporate accounts with an administrator on your side.

When data cannot leave the company

The open model runs on your server or in your cloud in the EU. To choose from:

White-tailed eagle
Polish model, SpeakLeash and ACK Cyfronet AGH
PLLUM
Polish model, HIVE consortium commissioned by the Ministry of Digitization
Qwen
Alibaba
GLM
Zhipu AI
DeepSeek
DeepSeek

We select a model for the task and check it on your cases. We run it, tune it and maintain it.

Source: Bielik and PLLuM, ACK Cyfronet AGH ↗ · PLLuM, Ministry of Digitization ↗

Do you have a lot of your own data? We will fine-tune the small model.

  1. 1 Your examples
  2. 2 tuning
  3. 3 test on new cases
  4. 4 model at your place

When you have thousands of similar emails, documents or reports, we teach a small open model based on your examples. It works for you, responds quickly and costs less to maintain than a large model. We measure quality on issues that the model has not seen while learning.

Przemysław and Piotr did it in large programming and consulting companies. Artem did it before and does it today at Syntalith. It's about models on your own infrastructure, tuning and quality measurement.

You choose the protection level during the interview. We sign the data processing agreement before we see any data.Schedule a free analysis →

Custom AI apps

When an off-the-shelf tool does not fit, we build your own.

We build an application with a language model for the work of your team: searching the company's knowledge, case panel or portal. We check the validity of your documents before launch, and the code stays with you.

See AI applications →
net per application, fixed price before contract
from €3,000
from signing the contract to acceptance
4–10 weeks
free prototype on your documents
€0

Questions

  • What should an order for a SaaS replacement say?

    Moving the open cases, acceptance on the team's real work, a plan to go back if the start fails, and what the contractor hands over: code, data and documentation.

  • How do you accept an application that replaces SaaS?

    On the work you are buying: employees handle real cases from start to finish, including open cases moved from the old system.

  • How much does it cost?

    At Syntalith, AI apps, automations and agents start from €3,000 net. At 300 cases a month and 8 minutes each, the payback is 3.1 months.

Let's talk

Just write, call or choose a date.

We work fast because we hate corporate cotton wool. We don't have salespeople or managers to keep an eye on managers. You talk immediately to engineers who then build your system. We respect each other's time and yours too.

We will accept 3 more companies by the end of the year.

Mon–Fri 9:00–17:00 CET

What our OpenAI and Anthropic partnerships mean for you.

OpenAI makes ChatGPT and Anthropic makes Claude. We belong to the partnership programs of both companies, so we work with their tools every day and learn from the creators themselves.

OpenAI Select PartnerClaude Partner Network
01We will select a tool for the task
We implement both ChatGPT and Claude. We check both on your documents, and you choose the one that makes fewer corrections and saves more time.
02Knowledge straight from the creators
We learn from official OpenAI and Anthropic courses and materials. Your team learns about the features and settings that work today.
03Licenses without our margin
When we roll out ChatGPT, Claude or Copilot, you buy the licences directly from OpenAI, Anthropic or Microsoft and they invoice you. We add nothing to the licence.
04Certified engineers
On the team, we have an AWS certification in machine learning and an Anthropic certification in systems architecture on Claude.

Participation in programs does not mean that OpenAI or Anthropic endorses our services.