Two AI-Powered Options, Two Very Different Models
If you're evaluating AI takeoff tools for structural steel, Beam AI and Steelflo will both show up on your radar. They both use AI, both promise faster takeoffs, and both target fabricators. But the way each one actually works is fundamentally different.
This post breaks down the real differences so you can pick the tool that fits your shop. We built Steelflo, so we have a point of view — but we'll tell you straight where Beam AI makes more sense.
The Short Version
Beam AI is an AI-assisted takeoff service. You upload plans, their team reviews the output with a human QA layer, and they deliver a finished Excel estimate in 24–72 hours. It covers 13+ trades. Best for shops that want to outsource takeoff entirely and bid more volume without hiring.
Steelflo is a self-serve SaaS tool. You run takeoffs yourself in the browser, in real time, and your estimator stays in the driver's seat. It only does structural steel — but it does it across four international standards. Best for fabricators who need fast turnaround, predictable costs, and full control over the numbers they submit.
If you bid late on Friday afternoons, Steelflo is the only one that can help you right then.
If your bottleneck is estimator headcount, not turnaround time, Beam AI is worth a serious look.
The Core Difference: Tool vs. Service
This is the framing everything else flows from.
Beam AI is a service with AI behind the curtain. Their pitch is "your full-time junior estimator." You hand off the drawings, their team uses AI plus human review to prepare the takeoff, and you get a finished Excel file back in one to three business days, formatted to your specifications. You're outsourcing the estimating function.
Steelflo is a tool your estimator uses directly. You upload a drawing, the AI does detection and quantification on the spot, and your estimator reviews and adjusts in the app. Results come back in minutes, not days. You're augmenting the estimator, not replacing them.
Both models work. They appeal to different buyers. A fabricator could rationally use both — Beam AI for overflow capacity on big jobs, Steelflo for fast-turn bids and what-if scenarios.
Side-by-Side Comparison
| | Steelflo | Beam AI | |---|---|---| | Product type | Self-serve SaaS | AI + human review service | | Trade focus | Structural steel only | 13+ trades (steel is one) | | Turnaround | Real-time, in-app (minutes) | 24–72 hours | | Workflow | Estimator runs takeoff directly | Estimator outsources takeoff | | Pricing | Free trial, then $399–$1,499/mo (public) | Requires demo call (not published) | | Free trial | Yes — 1 AI takeoff, no credit card | No — demo call required | | Output | In-app annotated PDF + BOM + CSV/Excel | Excel-based estimate | | Standards | AISC, EN, BS/IS, AS/NZS | US-focused only | | International | 4 standards, metric + imperial | No published international support | | Best fit | Steel fab estimators with bid pressure | Multi-trade GCs outsourcing volume |
When Steelflo Is the Right Call
1. You Bid on Tight Timelines
The single biggest practical difference is turnaround. Beam AI's published turnaround is 24 to 72 hours per takeoff. That's fine for bids you start a week out. It doesn't work for the late-Friday addendum, the Monday-morning resubmit, or the "can you get me a number by EOD?" call from the GC.
Steelflo runs in your browser. You upload a sheet, you get quantities in minutes. No queue, no QA wait, no email back-and-forth. If bid timelines keep getting tighter at your shop — and they do everywhere — this is the difference that matters most.
2. You Want Predictable, Transparent Pricing
Steelflo pricing is on the website: Pro at $399/month (5 takeoffs), Business at $599/month (10 takeoffs), Enterprise at $1,499/month (30 takeoffs). Flat-rate, unlimited usage within your plan. There's also a free tier with one AI takeoff so you can test on your own drawings before you pay anything.
Beam AI requires a demo to see pricing. That typically means per-takeoff or volume-based structures that scale with usage. If you're running 20+ bids a month, flat-rate self-serve software lands at a lower total cost than a per-takeoff service. Run the math for your own volume before committing either way.
3. Your Estimators Want to Own the Numbers
Some estimators love outsourcing the grunt work. Others want to see the markup themselves, verify connection counts, walk through the assumptions, and own the number that goes on the bid. They don't want to defend a quantity to the GC and say "my vendor came up with that."
Steelflo serves the second type. The estimator reviews every detection, confirms or rejects bounding boxes on the actual drawing, and exports a BOM they built — not one they received. Beam AI's model structurally can't deliver that level of estimator involvement.
4. You Want Depth in Steel, Not Breadth Across Trades
Beam AI covers HVAC, electrical, concrete, plumbing, civil, roofing, painting, masonry, demolition, and more. That's a lot of surface area.
Steelflo only does steel — W-shapes, HSS, channels, angles, pipes, plates, lintels, connections, finishes, the whole stack. The product is built around the way structural steel estimators think about a job, with detection tuned specifically for how steel members appear on structural drawings.
If you're a steel fab shop, depth in your trade beats breadth across thirteen.
5. You Work Outside the US
This is where the gap is widest. Steelflo supports four international steel naming standards out of the box:
- AISC (US): W12X26, HSS6X6X1/4, L4X4X1/2
- EN (Europe): HEA200, HEB300, IPE270, UPN120, IPN180, HD400
- BS/IS (UK, India, Middle East): UC305×305×158, UB610×229×101, SHS220×220×6
- AS/NZS (Australia, New Zealand): 310UB40.4, 250UC89.5, 150PFC
The pipeline auto-detects which standard a drawing uses, routes to the correct pattern library, and looks up section weights from standard-specific databases. Metric output for metric standards, imperial for AISC. No configuration needed. For a deeper look at how this works, read Steel Takeoffs Beyond AISC: How Steelflo Supports EN, BS, and AS/NZS Standards.
Beam AI's published focus is US contractors. There's no evidence of EN, BS, AS/NZS, or any metric standard support. If you bid international work — or you're a fabricator outside the US — Steelflo is the only AI takeoff tool in this comparison that works with your drawings. See our guides for Australian and NZ fabricators and European steel sections.
When Beam AI Is the Right Call
We'll be honest: Beam AI is the right choice in real situations.
You don't have estimator capacity. If your bottleneck isn't turnaround speed but raw headcount, and you'd rather pay for a service than hire, Beam AI's done-for-you model is exactly what you need.
You bid across multiple trades. If you're a general contractor or multi-trade sub, having one vendor handle steel plus mechanical plus electrical is genuinely simpler than stitching together specialized tools.
Your team won't adopt new software. "Email a PDF, get an Excel back" is the lowest-friction onboarding possible. If your estimators resist workflow changes, the service model wins by default.
You want established social proof. Beam AI publishes 1,200+ contractor customers and 500K+ completed takeoffs. They're exhibiting at NASCC 2026. Steelflo is newer. If proof-of-traction matters to your buying decision, that's fair.
If any of those describe your situation, give Beam AI a serious look.
When Steelflo Is the Right Call (The Short Version)
You're a structural steel fabricator. Bid timelines keep getting tighter. You want your estimator in control of the numbers. You'd rather pay flat-rate software than a per-job service. You need a tool that's deeply good at steel — not adequate at thirteen trades. And if you work outside the US, you need a tool that actually supports your standards.
That's the buyer Steelflo is built for.
A Note on Accuracy
Both products deliver high accuracy through different models. Beam AI adds a human QA team and claims plus-or-minus 1% accuracy. Steelflo's AI detection combined with your estimator's verification delivers 95–99% accuracy — the AI finds the members, your estimator confirms the results.
The difference is who does the QA. With Beam AI, their team reviews the output and you get a finished spreadsheet. With Steelflo, your estimator reviews every detection on the actual drawing with bounding box traceability — they see exactly where each member was found and make the final call.
The right way to evaluate either tool: run it on three of your actual recent bids and compare against your own takeoff. Suburban Fabrication started exactly this way — and the AI caught a member the estimator had missed.
How Is Steelflo Different from Beam AI?
Beam AI is a takeoff outsourcing service that covers many trades and delivers in 24–72 hours. Steelflo is a self-serve software tool built specifically for structural steel that delivers results in minutes. Some fabricators use both for different situations.
Can Steelflo Handle the Trades Beam AI Covers?
No. Steelflo is structural steel only. If you need takeoff across HVAC, electrical, concrete, or other trades, Beam AI's multi-trade coverage is a real advantage for your workflow.
How Fast Is Steelflo Compared to Beam AI?
Steelflo runs in the browser and returns quantities in minutes. Beam AI's workflow includes a human review step, so their published turnaround is 24 to 72 hours per takeoff.
What's the Price Difference?
Steelflo starts free (one AI takeoff, no credit card), then runs $399 to $1,499 per month depending on plan — all publicly listed. Beam AI requires a demo call to see pricing. For high-volume shops, flat-rate software typically costs less per takeoff than a per-job service.
Does Steelflo Support International Steel Standards?
Yes. Steelflo auto-detects and supports AISC (US), EN (European), BS/IS (UK, India), and AS/NZS (Australian/New Zealand) standards. Metric and imperial output handled automatically.
Does Beam AI Support International Standards?
Beam AI's published focus is US contractors. They have not announced support for EN, BS, AS/NZS, or metric standards.
Can I Use Both Steelflo and Beam AI?
Yes. A practical pattern: Beam AI for large jobs with long lead times where you want a done-for-you estimate, Steelflo for fast-turn bids, addenda, what-if scenarios, and any work involving international standards.
Try Steelflo on Your Own Drawings
The fastest way to know if Steelflo fits your shop is to run it on a bid you've already estimated. Compare the quantities. Time the workflow. Decide for yourself.
Start free at steelfloai.com — one AI takeoff, no credit card, no demo call.