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Should employee corrections train the next model?

Short answer

Employees' corrections become material for the next model version only after review. Some fix a model error, some add a new fact that belongs in the knowledge base, and some answer one recipient's special request. The process owner decides what becomes a pattern.

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
model on your server or in the cloud in the EU
quoted after the review
same work in application with EU cloud model
from €3,000
task, data and equipment analysis
€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

Corrections and models: statistics 2026

16.7 h

fewer correction hours a month at 2,000 answers: corrections added to the knowledge base cut errors from 15% to 9%, fine-tuning to 5%. Scenario.

Figures checked: 22 October 2026

A “save correction” button gives you material, and it does not explain what the model should learn from it. If an employee added a new fact, for example a changed delivery date, that information belongs in the knowledge base, because a model trained on such an example will remember a date that will change again in a month.

Where a correction goes
  • A model error on known facts

    the set for the next tuning

    after the owner approves

  • A new or changed fact

    the knowledge base the model answers from

    as soon as it is checked

  • An exception for one recipient

    a note on the case

    outside the pattern

One correction, different reasons

Say the AI has prepared a message with a meeting time taken from the calendar. The employee changes the time because they have just agreed a new one by phone. If we keep only the first and last versions of the text, it looks like a model error. In reality the model never received the new arrangement.

Another correction shortens a several-sentence greeting in line with the shared communication rules. Such a case may show a repeated behaviour the company wants to change. The reviewer needs to understand the difference before accepting both entries as patterns for the next version.

Collecting corrections without their reasons risks training on changes that cannot be reproduced from the information available. It is also worth keeping the correct answers. A list of errors alone does not show what the current model already does well and what a new version should not make worse.

Who decides which user corrections shape the next AI model

The employee knows the case, and their preference is not always a rule for the whole company. The process owner sets which corrections should apply more widely. When assessments differ, the person responsible for that type of work has to decide. The system can make that conversation easier by showing the specific differences and the sources.

Hugging Face describes dataset cards as documentation of a dataset's content and the context of its use. In a company workflow, a similar description lets you explain where approved corrections come from and what they represent. Being saved on a list does not automatically make them a correct pattern.

Not every batch of feedback has to end in training. If most of it concerns outdated information, the connection to the source may need fixing. If one editorial rule keeps coming back, change the instructions first. Fine-tuning, further training of an existing model, is an option for behaviours that a simpler change does not fix well enough.

A new version needs its own check

Before replacing the current model, the team compares both versions on cases outside the approved corrections used for adaptation. It judges whether the improvement shows in new answers and whether information that was handled correctly before has disappeared. The history of corrections helps choose where to look, and it does not replace such a comparison.

The buyer should also know what happens to a piece of feedback after it is saved. Does someone review it, or does it stay only in a statistic? Who agrees to the material being used, and who accepts the new version? These arrangements decide whether the error-report button leads to a useful change.

Describe a correction that employees save again and again, and how it is used afterwards. In a conversation with Syntalith we will settle where an expert's assessment is needed and what scope of linking feedback to the app's development makes sense. Information about working together is on the pricing page.

What fine-tuning on corrections costs and what it saves

Scenario: 2,000 answers a month
Today: 15% errors × 2,000 × 5 min
25 h × €34.90 = €873
After a change without training (corrections added to the knowledge base): 9%
15 h (€524)
After fine-tuning: 5%
8.3 h (€291)

Fine-tuning saves another 6.7 h (€233) a month beyond the simpler change

The error shares and the correction time are the scenario's assumptions, which we measure on cases not used for training. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat.

The comparison before the decision
  • Cases for assessment kept apart from training examples
  • The same set for the current solution, the simpler change and the new model
  • Decisions by the people who correct the results today
  • Errors counted separately for each type of mistake

Where to start

In the free process review we choose one process and 20 to 100 cases the team has already handled. We compare the simpler change with the adapted model on cases the model has not seen, and within 2 working days you get a written summary with a price. We adapt models as part of private LLMs, and build the app as an AI app.

Worked example · Scenario

How we count the payback: the next model version

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

€4,188

a month for the work on 600 questions

EU cloud version payback: 0.8 mo.

Our assumptions are 12 minutes to find an answer in the documentation, and checking in 15% of the old time. €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 6,000 + 500 tokens per answer in the EU cloud version, at the ECB rate of 1.1205 USD per euro on 22 October 2026. We count the payback for an app with a model in the EU cloud (from €3,000 net). We price the model on your server after a call, and the cost of people's work stays the same.

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 ↗

A model on your server or in the cloud in the EU, proven on your tasks.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 →

Private AI models

A model on your server or in the cloud in the EU, proven on your tasks.

We select the model and equipment for the task, run it and measure the quality using your examples before you buy anything. The data stays in the company or in the cloud in the EU. We price implementation, hardware or hosting and support separately after analysis.

View private AI models →
model on your server or in the cloud in the EU
quoted after the review
same work in application with EU cloud model
from €3,000
task, data and equipment analysis
€0

Questions

  • Are employees' corrections suitable for training a model?

    After review. A fix for an error can go into the training set, a new fact into the knowledge base, and an exception for one client stays outside the pattern.

  • Who decides what becomes a pattern for the model?

    The process owner. When assessments differ, the person responsible for that type of work decides, and the system shows the differences and the sources.

  • How much does fine-tuning a model cost?

    An AI app at Syntalith costs from €3,000 net, and we price adapting the model after comparing it with a simpler change on cases the model has not seen. In the scenario, fine-tuning saves another 6.7 hours a month beyond what corrections added to the knowledge base give.

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.