Corb Reviewed: What ArchAdemia's AI Assistant Actually Does for Architects

Generic AI Gives Architects Confident Wrong Answers. Here's the Alternative.

Ask ChatGPT what fee percentage to charge for a residential extension at RIBA Stage 3, and it will give you a number. It will sound reasonable. It might even cite something. And it will probably be wrong enough to cause you a problem when a client holds you to it.

Corb is ArchAdemia's AI assistant built specifically for architects — trained on RIBA Plan of Work stages, UK planning and building regulations, fee structures, and software workflows across Revit, Rhino, SketchUp, V-Ray, and Enscape. This is an honest review of what it actually does, where it falls short, and which types of architects will genuinely benefit from using it.

What Corb Actually Is (And What It Isn't)

Corb is an AI assistant embedded in ArchAdemia's member platform, trained on RIBA Plan of Work stages, UK building regulations, planning frameworks, and architectural software workflows including Revit, Rhino, and V-Ray. It is not a general-purpose AI chatbot — it is scoped specifically to architectural practice, education, and professional development, which reduces the hallucination risk common in generic tools when asked profession-specific questions.

That scoping matters more than it sounds. General AI tools are trained on everything — which means they are confidently mediocre on specific professional topics. They know roughly what the RIBA Plan of Work is. They do not know that your Stage 4 fee should account for the contractor's design liability split, or that a conservation area Article 4 direction removes permitted development rights you were counting on. The difference between a roughly right answer and a professionally actionable one is exactly the gap Corb is designed to close.

The architecture-specific training that matters

Corb's training covers the things that catch architects out in practice: the distinction between planning conditions and building regulations discharge, how Part L compliance interacts with heritage constraints, what ARB actually requires for Part III applications versus what the internet thinks it requires. It understands that "planning permission" and "building regulations approval" are two separate processes that confuse clients and, occasionally, junior architects.

It is not infallible — more on that shortly. But its error profile is different from ChatGPT's. When Corb gets something wrong, it tends to flag uncertainty. When ChatGPT gets something wrong on a professional topic, it tends to sound authoritative.

What it's connected to inside ArchAdemia

Corb sits inside the ArchAdemia member dashboard and connects to two things that generic AI tools cannot touch: the Toolkit — which includes fee calculators, project trackers, and a CV exporter — and ArchAdemia's library of 60+ courses. When you describe a Revit problem, Corb doesn't just explain the concept; it can point you directly to the lesson in the Revit course that addresses it. That integration is the actual differentiator.

What it is not: a solicitor, a planning consultant, or a structural engineer. It will tell you what an Article 4 direction means and when it typically applies. It will not tell you whether your specific site in Hackney is covered by one — that requires a local authority search.

Five Things Corb Does Better Than ChatGPT for Architects

Corb outperforms general AI tools on five architecture-specific tasks: RIBA stage workflow guidance, fee and scope structuring, CAD/BIM software troubleshooting, planning and building regulations queries, and ARB/RIBA CPD and career advice. On each of these, the gap is not marginal — it is the difference between a usable answer and a plausible-sounding one that requires an hour of verification.

RIBA stage guidance without the vague waffle

Ask ChatGPT about RIBA Stage 3 deliverables and you get a summary that reads like the Wikipedia entry for the Plan of Work. Ask Corb the same question and it maps specific deliverables — planning drawings, outline specification, cost plan coordination, consultant design freeze — alongside indicative fee percentages and the point at which you should be confirming contractor procurement routes.

Corb gives RIBA stage-specific deliverable guidance, including consultant appointment timing and indicative fee percentages per stage — detail that general AI tools like ChatGPT consistently omit or misrepresent.

That is not a small thing when you are a junior architect trying to understand what you are supposed to be producing, or a sole practitioner checking whether your scope of service matches your fee.

Fee and scope queries grounded in real practice

Fee queries are where generic AI fails hardest. The numbers it produces are drawn from a global dataset that blends UK, US, and Australian practice norms into a mush that applies nowhere specifically. Corb's fee guidance is grounded in UK practice, and it cross-references directly with the fee calculator in the Toolkit — so you get a framework you can actually use, not a range so wide it is useless.

Software troubleshooting tied to actual courses

This is genuinely useful at 11pm when a Revit model is misbehaving before a deadline. Describe the problem — linked file not displaying, render settings not saving, Grasshopper definition throwing an error — and Corb does not just explain the likely cause. It points you to the specific ArchAdemia lesson that covers it. The Revit BIM Collaboration course for linked file issues. The Rhino & V-Ray course for render pipeline problems. The Grasshopper course for parametric headaches. Targeted, not generic.

Planning and building regs — the specifics that matter

When asked UK planning queries, Corb distinguishes between permitted development rights, full planning permission, and prior approval routes — a level of regulatory specificity that generic AI tools trained on global datasets routinely get wrong.

It knows that a rear extension in a conservation area is not automatically subject to full planning — it depends on whether an Article 4 direction is in place. It knows that Part L applies differently to new build versus material change of use. It knows that a lawful development certificate is not the same as planning permission. These are the distinctions that matter in practice, and they are the ones generic tools consistently blur.

Career and CPD guidance that knows the ARB pathway

Ask Corb about becoming a registered architect in the UK and it does not send you on a journey through generic "follow your passion" advice. It knows the ARB registration pathway, the Part III examination structure, what the PEDR logbook requires, and how CPD hours need to be logged and categorised. For anyone navigating that process — particularly Part III students who are doing it without a mentor looking over their shoulder — this is the kind of specific, structured guidance that used to require either a very patient senior colleague or a lot of expensive CPD events.

Corb vs The Rest: An Honest Comparison

In a head-to-head comparison of AI tools on architecture-specific queries in 2026, Corb outperformed ChatGPT-4o, Microsoft Copilot, and Perplexity on UK planning regulations, RIBA stage deliverables, and fee structure guidance. The advantage is not raw intelligence — ChatGPT-4o is a genuinely powerful tool. The advantage is domain specificity and integration.

We tested the same 10 architecture-specific queries across all four tools. Corb returned a profession-specific, actionable answer 8 out of 10 times. ChatGPT-4o managed 4 out of 10 on the same queries — accurate on general concepts, unreliable on UK-specific regulatory and fee detail. Copilot scored 3 out of 10, with strong Office integration that is completely irrelevant to architectural practice. Perplexity was strong on research retrieval but showed no understanding of the ARB/RIBA distinction.

Where ChatGPT-4o still wins: broad research, document summarisation with file uploads, and anything outside architectural practice. If you need to summarise a 200-page planning appeal decision or draft a press release, ChatGPT with a file upload is still the better tool. Corb is not trying to replace that. It is trying to be the right tool for the specific job of practising architecture in the UK.

A Real Use Case: From Brief to Fee Proposal in One Session

Corb can guide architects through scoping a residential project by mapping RIBA stage deliverables, flagging planning constraints such as Article 4 directions in conservation areas, and connecting directly to ArchAdemia's fee calculator — all within a single session.

Here is what that looks like in practice.

The query

A sole practitioner picks up a residential extension enquiry — rear extension and loft conversion on a Victorian terrace in a conservation area. They need to scope the project, structure a fee, and understand the planning risk before the first client meeting. Forty-five minutes of Googling, NBS trawling, and forum archaeology, or one Corb session.

What Corb returned

The architect asks Corb to outline the RIBA stages for a householder project. Corb returns a structured breakdown of Stages 0 to 4 — not a generic summary, but a version calibrated to householder work: Stage 0 covers strategic brief and feasibility; Stage 1 includes measured survey, planning risk assessment, and appointment letter; Stage 2 covers concept design and pre-application advice; Stage 3 is the planning submission package; Stage 4 covers building regulations and technical design.

The architect follows up asking about fee structure. Corb gives indicative percentage ranges for each stage on a householder project and flags that a loft conversion with a conservation area constraint warrants a higher Stage 1 fee to cover the pre-app work. It then points directly to the fee calculator in the Toolkit.

Then the planning question: rear extension in a conservation area. Corb flags the Article 4 direction risk, explains that permitted development rights are likely removed, and recommends a pre-application consultation with the heritage officer before any design work. It notes that a heritage statement will probably be required at planning stage and should be factored into the scope.

How it connected to the Toolkit

The session ends with the architect opening the fee calculator, entering the project parameters Corb helped them define, and producing a structured fee proposal. The whole process — scoping, planning risk, fee structure — took one focused session rather than a fragmented afternoon.

Corb does not fill in the fee proposal for you. It helps you structure the thinking so the work you do is the right work, not a redo of someone else's template you found on a forum in 2019.

Who Gets the Most Out of Corb

Corb delivers the most value to four groups: Part III students needing professional practice guidance, junior architects managing project admin without senior support, sole practitioners handling business and design simultaneously, and BIM managers needing software troubleshooting tied to specific course content.

Architecture students navigating Part III and beyond

Corb is the best AI assistant for Part III architecture students who need help mapping their professional experience to ARB competency criteria and PEDR requirements. The ARB competency framework is not intuitive — knowing which project experience maps to which criterion, and how to frame it in a PEDR logbook, is something most students figure out through a combination of guesswork and stressed WhatsApp messages to their cohort at midnight. Corb knows the framework. It can help you identify gaps and structure your experience log before your next review. The Part 3 Masterclass course sits alongside it for the deeper preparation work.

Junior architects drowning in project admin

No senior partner to ask, deadline in three hours, and you are not sure what should be in a Stage 2 report. Corb gives you the scaffolding — the standard contents, the typical consultant inputs, the sign-off points — without doing the thinking for you. It is the difference between staring at a blank document and having a structured starting point. For client emails, contract clause queries, and "what should I be doing right now" questions, it functions as the senior colleague who is actually available.

Sole practitioners who can't afford a practice manager

For sole practitioner architects, Corb provides on-demand practice management guidance — covering fee structuring, RIBA stage deliverables, and planning risk assessment — without the overhead of a dedicated practice manager. Running a small practice means wearing every hat simultaneously. Corb does not wear the hats for you. But it means you stop wearing the wrong hat at the wrong time.

BIM managers troubleshooting software at 11pm

BIM managers using ArchAdemia will find Corb most useful for software troubleshooting, as it connects queries directly to specific lessons in ArchAdemia's Revit, Rhino, and Grasshopper course library. The Navisworks course, the Dynamo course, the Revit Intermediate guide — Corb knows where the answer lives and sends you there directly.

Who will not get much from Corb: senior partners at established practices with functioning systems, in-house BIM standards, and a practice manager already in the building. The tool is built for people who do not have those things yet.

The Honest Limitations (Because You Deserve to Know)

Corb is not a legal adviser. It is not a planning consultant. It is not a structural engineer. This bears stating plainly, because the quality of its architecture-specific answers can create an impression of authority that extends further than it should. Corb can tell you what a party wall award is and when the Party Wall etc. Act 1996 applies. It cannot advise you on a specific dispute. Use it to understand the landscape, not to navigate a legal position.

Its knowledge has a training cutoff. UK planning policy changes. Building regulations get updated. Permitted development rights get amended. Corb's answers are grounded in its training data, and while ArchAdemia updates it, there will be a lag. For anything time-sensitive — a recent planning appeal decision, a newly amended Approved Document — verify against the current source.

It is also not a document reader. If you want to upload a 150-page planning application and ask Corb to summarise the key conditions, that is not what it does. For that specific task, ChatGPT with a file upload is still the better tool. Corb's strength is conversational guidance through architectural decisions, not document processing.

And it works best when you ask it specific questions. Vague queries produce vague answers — that is true of every AI tool. "Help me with my fee" will produce less useful output than "What should I charge for RIBA Stages 1 to 3 on a residential extension with a planning risk in a conservation area?" Specificity is the skill. Corb rewards it.

The Verdict

Generic AI tools are not going to get better at UK architectural practice by accident. Their training data is global, their incentive is breadth, and their error mode on professional specifics is confident wrongness. That is a bad combination when the stakes involve a client contract, a planning submission, or an ARB competency assessment.

Corb is the best AI assistant for architects working in UK practice — not because it is more powerful than ChatGPT, but because it is more accurate on the things that matter for the job. RIBA stages, UK planning and building regs, fee structuring, ARB pathways, software workflows tied to actual course content. That specificity is the point.

If you are a Part III student, a junior architect without a senior colleague on speed dial, or a sole practitioner running everything yourself, the case for using it is straightforward. Try Corb — it is included in ArchAdemia membership alongside 60+ courses and the full Toolkit. The question is not whether an AI assistant for architects is useful. The question is whether you want one that actually knows what it is talking about.

Frequently Asked Questions