AI chatbots: how to choose from 9 tools

Do you need a Czech newsletter, a supplier comparison or sources for an article? The right AI chatbot depends on the task. Choose a subscription according to the work you need to finish.

For an initial comparison of tools for everyday office work, we recommend giving two tools, such as ChatGPT and Claude, the same materials. If your team works in Microsoft 365 or Google Workspace, include its assistant. Perplexity is worth considering for research. This is a starting shortlist for your own trial, not a declared winner.

Method: this overview uses providers’ public documentation checked on 22 September 2026. It is not a laboratory test or a ranking of Czech language quality. The suggested tasks are for you to try; we did not measure their results for this comparison.

Nine AI chatbots to consider for work

The table suggests trial tasks, rather than ranking tools from best to worst. On a phone, scroll the table horizontally.

How the products differ

ChatGPT: conversation and file-based work

OpenAI distinguishes Chat, deliverable-based work in ChatGPT Work, and development in Codex. A marketing team could try producing a presentation from supplied materials and checking that the figures survive correctly. Documentation covers research, file analysis and document creation; availability and usage depend on the plan and workflow. Official ChatGPT overview.

Claude: writing and project materials

Claude offers a free plan and paid options. Pro includes Projects and Claude Code, with higher usage still subject to limits. For Czech writing, provide the same brief and style examples you give other tools. Judge how much editorial work the actual result needs. Claude features and plans.

Gemini: check what your Google account includes

Google offers a free option and personal Google AI plans with expanded capabilities, including Gemini in Google apps. Businesses should first check their particular Workspace licence. Do not automatically treat a personal subscription as a substitute for business terms. Google AI plans for Czechia.

Microsoft Copilot: licensing matters

Copilot Chat can work with uploaded files. Access to company sources and features inside Microsoft 365 apps varies by licence and organizational configuration. In a trial, ask whether it can access the document you need and whether that access is appropriate. Microsoft Copilot Chat documentation.

Perplexity: sources help, but still need checking

Perplexity combines search with sourced answers. Advanced modes and file work depend on the plan. Consider it for research, but open the original link behind every important claim: a study may cover a different population, or an announcement may describe a future plan. A citation does not prove that its interpretation is correct. How Pro Search works.

DeepSeek: distinguish chat, API and deployment

DeepSeek offers web chat, an app and developer access. Its public service’s privacy policy states that personal data is processed and stored in China. That is a concrete consideration for a business assessment, not evidence that every possible use is inherently unsafe. Running a model yourself is also different from using public chat. DeepSeek overview, privacy policy.

Mistral Vibe: the new name for Le Chat

Mistral now presents Le Chat as part of Vibe for work and code, with Free, Pro, Team and Enterprise options. If data management is why you are considering it, ask about the actual contract and deployment. A European supplier address alone does not resolve all your company’s obligations. Mistral Vibe overview.

Grok: searching the web and X

The provider describes live web and X search alongside voice and image features. You can try Grok free, with higher limits through SuperGrok. Finding an original discussion may help marketing research, but a popular post is still not a verified fact. Grok features.

Meta AI: an assistant in familiar apps

Meta announced free rollout across European WhatsApp, Instagram, Facebook and Messenger in March 2025. That announcement does not establish that every account now has identical Czech-language support or features. Check availability in your own app. Original European launch announcement.

Free options and paid subscriptions

ChatGPT, Claude, Gemini, Perplexity and Mistral have free options that may suit an initial trial. Check limits for the features you will actually use, such as uploads or deeper research. Many paid plans have limits too.

A dollar list price is not a Czech checkout total. Before buying, check currency, VAT, promotions and billing period. For business licences, establish seat requirements and usage charges too. API pricing is separate from a chat-app subscription.

For other options, consult the current Perplexity plan comparison, Mistral pricing and your account’s offer. Calculate savings after a trial: compare subscription costs plus time spent briefing and correcting against your original process. Five subscriptions do not automatically produce five finished tasks.

How to compare Czech writing and useful output

We recommend a small trial before buying licences for everyone. Use public or approved test materials, save the brief, and record the date, plan and selected model.

1. Choose a task whose result you can verify. For example, a product newsletter with five documented features, a price and one link.
2. Give every tool the same brief. Include two of your own style examples and the exact product URL. Require factual fidelity and identification of missing information.
3. Review without seeing the tool’s name. Check natural Czech, sentence flow, adherence to instructions and every added claim.
4. Measure time to a usable version. Include your edits and fact-checking. A quick first answer does not necessarily mean quickly finished work.
5. Repeat with a different task. Try summarising a longer document with references to specific passages. One good answer cannot support a general verdict.

A sample brief for your trial

Prepare a Czech newsletter for our online shop’s customers. Use only the facts in the attached product sheet and preserve the exact price. Follow the style of the two attached examples. Write a subject line and a body of up to 180 words with one link to the supplied product URL. Do not invent customer experiences or results. Below the draft, identify any missing information I need to provide.

The expected result is a draft faithful to the materials, not an automatically publishable email. Check the price, features and link, and whether someone unfamiliar with the product can understand it. See our guide to writing prompts for more.

Before uploading business data

For each candidate, establish how it handles inputs and outputs, whether it uses them for training, where it processes and stores them, how long it retains them and who can access them. Check connected apps too. A company name or paid plan does not answer these questions on its own.

Create an approved tool list with understandable examples of permitted inputs. Consider the purpose as well: our AI Act business guide explains different roles and obligations.

Frequently asked questions

Which AI chatbot is best at Czech?

There is no defensible winner without a common brief and evaluated outputs. Compare everyday tasks and editing time, rather than first impressions alone.

Do I need a paid subscription immediately?

A free option may be enough for a first trial. Choose a subscription according to the functions, limits and data terms you need.

Does an answer with sources guarantee accuracy?

No. Open the original source and check whether it supports the claim, including its date and context.

This text update was created with AI assistance. Prices and features were checked against public provider materials on 22 September 2026; account availability may vary. The trial tasks are our suggestions, not reported measurements.