Are my invoices sent to the OpenAI cloud?
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During PDF OCR import, the PDF contents are sent to the OpenAI vision API (GPT-4 Vision) for field extraction. OpenAI declares GDPR compliance and does not store API inputs for model training (Data Processing Addendum, as of 2026-05). For highly sensitive documents you can disable the OCR feature in settings and do a manual import.
Which AI models does 1FAKTURA use?
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For OCR extraction from PDFs and images we use OpenAI GPT-4 Vision (we update the model family alongside OpenAI releases). For expense categorization and line-item suggestions we use smaller and faster models (typically GPT-4o-mini) which give sufficient accuracy at a fraction of the cost. AI calls are always server-side from our infrastructure; we never hand the OpenAI key to the client.
How accurate is AI extraction?
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On standard Slovak invoices (Pohoda, Money S3, KROS exports, or PDFs from cloud invoicing tools) accuracy is 90 – 95 % on all core fields (IČO, amounts, rates, date). On hand-written or unusual formats it drops to 70 – 85 %. As a user you always review before saving — AI only pre-fills, never automatically commits final values.
What if AI fills a field wrong?
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When pre-filled fields show, you simply edit them manually and save. The incorrect pre-fill is reported to our monitoring system, on the basis of which we train more accurate prompts for subsequent OCR cycles. For mission-critical documents we recommend disabling OCR and doing a manual import.
Are AI features included in the plan price?
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Yes, AI features are included in the Lite plan and higher with no extra charge for AI calls. Internally we measure AI call costs per customer and at 10 × average usage we negotiate a custom enterprise rate. For most sole traders and SMBs the cost of AI calls is negligible.
What's the difference between AI and classic OCR (Tesseract)?
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Classic OCR (Tesseract) extracts text from an image — raw text without structure. AI vision models (GPT-4 Vision) understand context and return structured fields (IČO = X, amount = Y) directly. For Slovak invoices with varied layouts, the AI approach is 5 – 10× more accurate than Tesseract + regex rules combined. For internal debug we keep Tesseract as a fallback when an AI call fails.
Are you planning AI generation of the entire invoice?
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Not in the short term. AI is a copilot for us, not an autopilot — the final decision (which VAT rate, what amount to invoice, what due date) stays with the user. AI can suggest, pre-fill, categorize and flag anomalies, but invoicing is a legal act and responsibility for its correctness lies with the entrepreneur. This stance stays in 2027.
Does AI work for cross-border invoices?
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Yes, OCR extraction works for invoices issued in Czech, English and German. AI also recognizes foreign VAT IDs (CZ, DE, AT, IT, …) and stores them in the correct field. For intra-EU reverse charge invoices (§ 15 or § 43) AI recognizes the clause and suggests the correct tax regime.