EVALUATE · BIDDER SIDE

Evaluate German tenders systematically. In minutes, not days.

The 5-lens analysis for well-founded go/no-go decisions.

kalkulr reads your tender documents — GAEB files, PDFs, Word — and delivers a structured dossier from five perspectives: executive summary, bid/no-bid recommendation, risk register, clarification questions, claims potential. Built for mid-market construction firms, IT service providers, utilities, and any German Mittelstand that wants to evaluate public tenders systematically.

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GAEB X81–X86 nativeVOB/B-awareGDPR-compliantEU infrastructure (OTC)

What does kalkulr do?

kalkulr is our analysis product for bidders. A standalone AI tool that analyses every tender from five perspectives — executive summary, bid/no-bid recommendation, risk register, clarification questions and claims potential — and delivers in minutes the structured decision base that takes a bid team 40 to 80 hours. kalkulr is GAEB-native, VOB/B-aware and designed for GDPR. Core infrastructure runs on Open Telekom Cloud in the EU; for individual analysis steps we deliberately use the strongest available language model. kalkulr has its own database and is usable fully independently of auftragr and zuschlagr.

Who is kalkulr built for?

For teams that regularly evaluate tenders — and want to avoid the wrong-bid decisions that hide in incompletely read documents.

Mid-market construction firms

VOB/B contracts, GAEB bills of quantities, claims management. kalkulr reads both and shows what the fine print actually says — before the bid goes out.

IT service providers in the public sector

EVB-IT contracts, qualification criteria, BSI baseline protection. Before the first white paper, you know whether the application is worth it.

Building-products manufacturers & suppliers

Check BoQ positions against your product catalogue, identify exclusion criteria, surface claims potential for modifications.

Energy & infrastructure

Utilities-sector awards with long contract durations, grid-connection risks, subsidy dependencies. Every line in the risk register matters.

Consulting & services

Negotiated procedures with prior competition, collective-agreement compliance, minimum-wage documentation. kalkulr detects regional specifics automatically.

Bid managers & proposal coordinators

Standardised evaluation across every tender. Comparable dossiers as decision base for the executive team.

How kalkulr works

Four steps from tender documents to structured dossier.

1
Upload the documents
GAEB X81–X86, PDF, Word, Excel. Up to 30 files per analysis, up to 5 MB total. A live demo gives you a full walkthrough without registration.
2
AI reads the tender
All positions, all attachments, all contract terms. The five perspectives run in parallel — not sequentially. Minutes, not days.
3
You receive the tender dossier
Executive summary for leadership, bid/no-bid recommendation with confidence score, risk register with probability, open clarification questions, claims potential with VOB/B reference.
4
You decide. With a foundation.
No AI oracle. Every recommendation is traceable to the source in the original document. You confirm, adjust or discard — the audit trail stays complete.

What kalkulr does

Six core capabilities that work together — not six tools in a folder.

5-lens analysis

Executive summary, bid/no-bid, risk register, clarification questions, claims potential. All perspectives in one dossier.

Claims potential with VOB/B reference

VOB/B §2 (3) unit prices, §2 (5) lump-sum extensions, 12 claim categories. Every finding with legal reference and reasoning.

GAEB X81–X86 native

BoQ positions, quantities, short and long texts, sub-trades. No converter, no format loss.

Risk register

Contractual penalties, payment terms, price-escalation clauses, liability limits. Probability × impact × mitigation.

Go/no-go with confidence score

Strategic fit, capacity, competitive position, financial viability. Strong Bid / Conditional Bid / No-Bid — with audit trail.

Automatic clarification questions

Unclear BoQ positions, implausible quantities, contradictory contract terms. Wording for the query included.

Multi-document upload

Up to 30 files at once. Automatic recognition of related documents. No pre-sorting needed.

Live demo with your tender

Live

One full analysis on one of your tenders — personally guided in a 30-minute demo session.

Compared to manual evaluation

What changes when the 5-lens analysis does the first read instead of a bid team.

—	Manual	With kalkulr
Time per tender	40–80 senior hours	12 minutes machine time + 1–3 hours review
Risk detection	Industry data: up to 30 % of risks missed under time pressure	Structured risk categories with legal reference
Claims potential	Industry studies: 63 % of justified claims are never filed	Automatic detection per VOB/B — source per finding
Consistency of evaluation	Depends on reviewer, time of day, experience	Every tender evaluated with the same framework
Traceability	Internal notes, often undocumented	Every recommendation sourced to the original location

Frequently Asked Questions

How is kalkulr different from AVA (cost-estimation) software?

AVA programs (California.pro, ORCA, iTWO) calculate cost and quantity. kalkulr analyses the tender before calculation. The two systems solve different problems. kalkulr does not replace AVA — it feeds it: results export as a handover document for the estimator.

How accurate is claims-potential detection?

kalkulr detects claims potential using the standard VOB/B categories (§2 paras. 3, 5, 6, 7 and others). The assessment is pre-qualification — legal review stays with your construction lawyer. In practical tests, typically 3–8 potential claims are identified per BoQ with 500+ positions.

Which file formats are supported?

GAEB X81, X82, X83, X84, X85, X86 and D81, D83, P81, P83. Also PDF (incl. scanned documents with OCR), Word (DOC/DOCX), Excel (XLS/XLSX). Up to 30 files per analysis, max 5 MB total.

What happens to my tender documents?

Your documents are stored on EU infrastructure (Open Telekom Cloud) and used solely for your analysis. No sharing with third parties, no training of AI models on customer data. For individual analysis steps we deliberately engage the strongest available language model — transparently, with your consent, and under EU standard contractual clauses.

How can I try kalkulr?

Book a personal live demo at blackswanai.de/en/request-demo — we walk through the platform on one of your own tenders or a realistic example. kalkulr is a paid platform; for regular use and premium modules we provide a custom quote.

How long does an analysis take?

One analysis per tender runs in minutes — the five perspectives run in parallel. Typical turnaround is 12 minutes of machine time plus 1–3 hours of review by your team.

Does kalkulr replace the estimator or bid manager?

No. kalkulr structures the material — the decision stays with the human. Humans decide. AI structures. kalkulr delivers the dossier on which the bid manager or executive decides go/no-go.

How does kalkulr integrate with existing systems?

Web application, no installation. Export as PDF and structured JSON. CRM and ERP integrations are in preparation — share your specific requirements via pricing inquiry.

Which industries does kalkulr cover?

Primary focus: construction, infrastructure and industry. But: the 5-lens framework is cross-sector. We have analysed tenders in IT, energy, consulting, logistics and the public sector. Sector-specific norms (VOB/B for construction, EVB-IT for IT, HVA B-StB) are respected where applicable.

Is kalkulr GDPR-compliant?

Designed for GDPR compliance. Core infrastructure on Open Telekom Cloud in the EU, TLS 1.3 in transit, AES-256 at rest, no sharing with third parties. For AI analysis, non-EU language models may be engaged — transparently, with EU standard contractual clauses and your consent. Details in privacy policy §7.