OneEstimate vs OPUS:
Which is Better in 2026?
Comparison between the Mexican budgeting leader and the modern alternative with AI, BIM and multiplatform cloud.
The 4 Most Common Problems with OPUS
Windows Only
Doesn't work on Mac or Linux. Limited to Windows-equipped computers.
Expensive Separate Modules
Each feature is paid separately. Total cost escalates quickly.
No Cloud Version
Requires local installation. Can't access from mobile or tablet on-site.
Steep Learning Curve
Complex interface requiring days of training before being productive.
Complete Comparison Table
Feature-by-feature analysis.
| Feature | OPUS | OneEstimate |
|---|---|---|
| Minimum price | ~$150 USD/mo | Free (permanent plan) |
| Artificial Intelligence | Not included | AI to identify items |
| BIM Integration | BIM quantification (extra module) | Native IFC included in Business plan |
| Platform | Windows only | 100% cloud (Windows, Mac, mobile) |
| Price database | ECOSTOS (Mexico) | 10,700+ APU (6 countries) |
| Project scheduling | Yes (integrated Gantt) | Not included |
| Unit price analysis | Excellent (Mexican standard) | Very complete |
| Mexico tenders | SCT, CONAGUA compatible | Standard formats |
| Team collaboration | Limited (local files) | Real-time cloud |
| Ease of use | Requires training | Intuitive from day 1 |
OneEstimate wins 7 out of 10 categories
Try OneEstimate FreeReal Savings: OPUS vs OneEstimate
OPUS annual cost
OneEstimate Pro annual cost
Annual savings
Real example: An engineering firm in Mexico saves over $1,452 USD/year switching from OPUS to OneEstimate Pro.
FAQ: OPUS vs OneEstimate
Can I migrate from OPUS to OneEstimate?
Yes. Export your OPUS catalogs and budgets to Excel and import them into OneEstimate.
Does OneEstimate work on Mac?
Yes. It's 100% cloud and works in any browser: Windows, Mac, tablet and phone.
Does OPUS have a free plan?
No. OPUS requires per-module licenses from ~$150 USD/month. OneEstimate has a permanent free plan.
Can I make SCT budgets with OneEstimate?
Yes. It generates unit cost breakdowns in standard formats compatible with Mexican agencies.
Does AI replace ECOSTOS?
AI complements the price database. OneEstimate includes 10,700+ APU for Mexico and other countries.
Ready for a Modern Alternative to OPUS?
Same power, with AI and BIM included, in the cloud from $0/month.
Try OneEstimate FreeNo credit card • Works on Mac and mobile • Support included