CONXAI Review 2026: Agentic AI for Construction Documents and Jobsite Vision

Updated November 8, 2026 – Tested Intelligence

Quick verdict: CONXAI is a Munich-based agentic AI platform built only for construction: its DocNostic module automates tender, specification and submittal workflows across thousands of pages, and its vision models read existing site cameras. It is enterprise software sold by contract and configured per use case – powerful for large teams with document overload, and the wrong buy for anyone who wants a priced app they can switch on this week.

What it is

CONXAI Technology GmbH sells a modular AI platform for the AEC industry under the line “AI that understands construction.” Customers start with a single use case and expand, configuring capabilities in what CONXAI calls a Lego-like fashion, via dashboards or APIs. The company is SOC 2 and ISO 27001 certified.

The flagship module is DocNostic, listed on AWS Marketplace as the document module of the platform. It extracts information from tenders, specifications, drawings and contracts, reasons across documents using a construction domain ontology, and runs hierarchical multi-agent workflows with human review of proposed actions. CONXAI’s vision side analyzes CCTV feeds with a segmentation model fine-tuned on over 50,000 self-labeled construction site images, recognizing more than 40 specialized object classes such as cranes and excavators.

What the pricing page does not make obvious – there is no public price list – is spelled out in the AWS Marketplace terms: DocNostic is billed in “Units” of API consumption under a contract, the listing publishes no per-unit or per-document figure and tells buyers to confirm the exact unit definition with the vendor before committing, and prepaid 12, 24 or 36-month subscriptions are not refundable if you choose not to renew, though you keep access for the remaining term.

Key features

• DocNostic document AI: RFP and tender analysis, BoQ (bill of quantities) extraction and bid leveling support from multi-format documents and drawings
• Criteria compliance checking: designs, materials and submittals checked against codes and contract specifications, with deviations flagged
• Knowledge engineering and multi-agent orchestration: historical project data becomes a queryable library, and agent workflows run with task-based explainability and human review
• Jobsite vision as a service: model-as-a-service API priced on batches of 1,000 images, or a SaaS dashboard to manage cameras, search footage and run analytics
• Automatic person anonymization in video for GDPR compliance, and Kubernetes-based deployment that can run at the customer’s edge when data cannot leave the site

Pricing

Pricing is not public. CONXAI sells by contract, scaled to the use cases and volume you deploy. The two concrete mechanics the vendor has published are on AWS Marketplace and its own engineering blog: DocNostic is sold as a single pricing dimension – DocNostic API Units – under 12, 24 or 36-month prepaid terms with no published per-unit rate, and the vision model-as-a-service is priced per batch of 1,000 processed images. Get the unit definition, the batch price and the renewal terms in writing before you sign; those three numbers are the whole cost story.

Who it’s for

Large contractors, owners and manufacturers whose estimators lose days to tenders, specs and submittals – AWS Marketplace cites over 40 use cases deployed worldwide, Kajima cutting document processing time by 70% (vendor-reported), and Hensel Phelps streamlining document review. It also fits European teams needing GDPR-grade anonymization on site video.

Who should skip it

Small and mid-size contractors: there is no self-serve signup, no published price and no standard package – this is a configured deployment, not an app. Teams that need a system of record for project management should also pass; CONXAI is an AI layer that plugs into your stack, not a Procore replacement. And if your documents are already simple and low-volume, the contract overhead will outweigh the automation.

Pros

• Construction-only ontology and agents, not a general-purpose AI tool pointed at PDFs
• Document and vision AI under one platform, with named enterprise proof points (Kajima, Hensel Phelps)
• Human review and explainability built into the agent workflows
• Edge deployment option for sites where video and data cannot leave the premises

Cons

• No public pricing anywhere; even the AWS listing’s “Units” are undefined until you talk to sales
• Prepaid multi-year terms with no refund on non-renewal, per the AWS Marketplace terms
• Accuracy claims (including the 70% Kajima figure) are vendor-reported, not independently benchmarked
• Thin public user-review footprint – the AWS Marketplace listing currently shows zero customer reviews

FAQ

How much does CONXAI cost?

There is no published price. DocNostic is contracted in API “Units” on 12, 24 or 36-month prepaid terms via AWS Marketplace or direct, and the vision API is priced per 1,000-image batch. Confirm the unit definition and batch rate with CONXAI before committing.

What is DocNostic?

DocNostic is CONXAI’s document module: it extracts and cross-checks information across tenders, specifications, drawings and submittals, automates BoQ work, and flags compliance deviations, with human review of agent actions.

Does CONXAI identify people on camera?

No – the opposite. Its vision product anonymizes people by masking or blurring to meet GDPR requirements, and recognizes objects and site conditions (40+ classes) rather than faces.

Bottom line

CONXAI is one of the few genuinely construction-native agentic AI platforms, and DocNostic’s tender-to-BoQ workflow is exactly where large contractors bleed estimator hours. Buy it like infrastructure, not software: pilot one use case, pin down the unit pricing in writing, and weigh the non-refundable prepaid terms before you scale it across the business.