On this page · 15 sections6 min read
- 01Our verdict
- 02At a glance
- 03Pros & cons
- 04What you’ll learn
- 05Format, schedule and time commitment
- 06Accreditation and what the credential is worth
- 07Price, payment plans and refunds
- 08Who it’s best for — and who should skip it
- 09Pros and cons in detail
- 10How it compares
- 11OpEx90 vs alternatives
- 12How to enroll
- 13Score breakdown
- 14Key facts
- 15FAQ
Our verdict
Our verdict7.8/10OpEx90 was Dan Feliciano's Lean Six Sigma brand; opex90.com now redirects to the Dan Feliciano Academy, which focuses on training teams to fix how work gets done, including where AI can help with analysis and documentation.
Pricing shared by the provider lists belt programs at $595 (Yellow), $1,895 (Green) and $3,895 (Black), but these prices and the belt curriculum were not visible on the official pages when we checked, and no accreditation is stated. That leaves several open questions before buying, including certification requirements and refund terms. It may suit organizations that want a practitioner-led, team-oriented approach; individuals seeking an accredited belt at lower cost have cheaper, better-documented options.
Best for: Teams and managers who want practical process-improvement training led by Dan Feliciano.
At a glance
The former OpEx90 site now presents Dan Feliciano Academy, with practical Lean Six Sigma and AI-oriented training for teams. The current official page does publish belt-level outlines and training hours, improving on the incomplete historical summary, but it does not display current tuition or accreditation. The strongest apparent fit is an organization seeking training and coaching around its own work. Individual buyers should obtain a specific offer before treating older OpEx90 package names or prices as current.
Pros & cons
- Practitioner-led Lean Six Sigma training
- Covers Yellow, Green and Black Belt levels
- Includes guidance on where AI helps in process work
- opex90.com now redirects to Dan Feliciano Academy; belt pricing not visible
- Accreditation not stated
- Higher prices than many self-paced alternatives
What you’ll learn
The current page distinguishes an eight-hour Yellow Belt, a 40-hour Green Belt, and an 80-hour Black Belt. Yellow Belt introduces process thinking, waste, DMAIC, and basic problem solving. Green Belt adds project leadership, data analysis, root cause, stakeholder engagement, and control plans, while Black Belt addresses more complex improvement and change leadership.
AI is framed as assistance for analysis, documentation, brainstorming, communication, and workflows rather than a replacement for judgment. That is a specific addition to the process-improvement positioning. Ask how those tools appear in exercises and how the training handles the organization’s own data before assuming the AI label identifies one standardized software curriculum.
Format, schedule and time commitment
Yellow Belt instruction is listed at eight hours, Green Belt at 40, and Black Belt at 80. The academy also describes team cohorts, live workshops, and project coaching. That current offering is broader than the older self-paced classification, which should not be assumed to describe every engagement now available.
Those stated hours establish the scale of instruction at each level, but not the exact calendar for a customized team. Delivery dates, session length, project work, and coaching need to be agreed in the actual proposal.
For an employer, allocate time for applying the methods between sessions rather than assuming attendance alone resolves a process problem. The page explicitly emphasizes follow-through and work-based examples. Ask who participates in coaching, whether managers are involved, and how the timetable accommodates the operational work the training is intended to improve.
Video: OpEx90
Accreditation and what the credential is worth
No named accreditation or detailed certification assessment is established on the current overview. Belt terminology organizes the training levels, but does not by itself show who issues the award, what must be passed, or whether a project is formally assessed.
Before buying for a credential requirement, obtain the exact certificate and evaluation conditions. The academy’s practitioner-led positioning may be useful for applied learning, yet it should not be converted into an external accreditation claim. An employer seeking a particular recognized belt should compare that requirement with the proposed training rather than accept a familiar title as sufficient evidence.
Price, payment plans and refunds
The current academy overview does not display tuition. Older OpEx90 prices reported by partners were not confirmed against the present official offering and are not used here. Request a proposal for the training being offered now rather than budgeting from a legacy package name.
The team-oriented presentation suggests requesting a proposal matching the intended scope, because OPEX90 does not publish a per-seat price, a minimum group size or financing terms. Ask the provider to separate instruction, customization, project coaching, and any assessment in the quote.
Cancellation, refund, and rescheduling conditions are absent from the overview examined. For a group, also ask how participant changes or a stalled workplace project affect the agreement. Compare the written proposal with equivalent live or mentored training instead of using an old self-paced amount as the benchmark for a customized team engagement.
Who it’s best for — and who should skip it
Dan Feliciano Academy fits a team that can bring a real operational problem into training and wants examples aligned with its work. The page’s emphasis on ownership, action plans, and control plans may be especially relevant when sustaining improvements matters as much as learning analytical tools.
Skip an individual purchase based only on legacy OpEx90 pricing or a presumed self-paced package. A buyer who needs an instantly available, fully documented online certificate may find Leanscape easier to evaluate. An organization requiring named accreditation should resolve that condition before commissioning customized instruction.
Pros and cons in detail
- Work-based teaching: The academy describes practitioner-led training built around actual operational tasks.
- Visible belt outlines: Yellow, Green, and Black Belt content and instructional hours are published.
- AI as a supporting tool: Analysis, documentation, and follow-through incorporate AI assistance.
- A changed offering: The OpEx90 brand now leads to a different academy presentation, so legacy product details may no longer apply.
- Incomplete enrollment terms: Current tuition, accreditation, assessment, and refund rules are not established by the overview.
The strongest feature is the ability, according to the academy, to tailor examples, exercises, project coaching, and leadership alignment to an organization’s work. That can make training more relevant than a generic sequence if the engagement is clearly scoped. Published belt hours also provide a useful starting point for discussing commitment.
The weakness is purchase transparency for an individual comparing standardized courses. Current prices and assessment terms are absent, while the older brand and URLs can create confusion about what is still offered. The review therefore remains cautious: the practical training proposition is identifiable, but its cost and credential value cannot be ranked confidently without a current proposal.
How it compares
6Sigma.us Lean Six Sigma Green Belt offers a more concrete starting point for scheduled training, with virtual instructor-led tuition at $2,950 and a detailed syllabus. Live and on-site routes involve about two weeks in two four-day blocks; self-paced instruction is described as 30 hours, with a project for project certification. A current self-paced price could not be established, and an older low estimate is not treated as verified tuition. The company states IACET and ISSSP accreditation and offers several delivery formats.
Leanscape Online Lean Six Sigma Green Belt is easier to evaluate as a solo learner’s fixed package: €999 upfront, three monthly payments of €366, or six of €192. Its five-day in-person option is €1,650, with prices shown in EUR/GBP and no verified USD amount. Online study lists 40 learning hours, 50 modules, one real project, and 12 months of access with mentoring and a CPD-accredited certificate. Project revisions may need time beyond the lesson estimate, so compare the application support as well as the defined price.
The Six Sigma Certification category includes both standardized courses and this team-oriented offer. Our review methodology explains the curriculum, credibility, value, flexibility, and support criteria used when evaluating Dan Feliciano Academy’s current presentation.
OpEx90 vs alternatives
How OpEx90 stacks up against other six sigma certification programs we reviewed, on the facts published by each provider.
Swipe sideways to compare all 4 programs →
| Criterion | This review | |||
|---|---|---|---|---|
| Our score | 7.8/10 | 8.9/10 | 8.6/10 | 8.4/10 |
| Price | $595 – $3,895 | $695 – $2,950 | $99 – $899 | — |
| Format | Self-paced | Hybrid | Self-paced | Self-paced |
| Duration | — | About 2 weeks (on-site/virtual, two 4-day weeks) or 30 hours (online… | — | 12 months of access; short video lessons and quizzes. |
| Accreditation | — | Accredited by IACET and ISSSP (per 6Sigma.us). | — | CPD-accredited certificate. |
| Free trial | — | — | — | Free Fundamentals course. |
| Best for | Teams and managers who want practical process-improvement training led by Dan Feliciano. | Professionals who want an IACET-accredited Green Belt with the choice of live virtual… | Professionals who want approachable, online Lean Six Sigma Green Belt training with… | Learners who want a CPD-accredited, self-paced Green Belt with installment options. |
| Full review | You are here | 6Sigma.us review | GoLeanSixSigma (GLSS) review | Leanscape review |
“—” means the information was not published or not yet checked. See all 4 six sigma certification programs.
How to enroll
Use Train the Team or the inquiry controls for the relevant belt on the academy’s current page. The site invites a discussion of the engagement rather than providing a fully priced checkout for every level. Prepare the team’s learning objective before using that route so the proposal can address the intended work.
Request a proposal specifying participants, hours, calendar, examples, project coaching, assessment, certificate, total price, and cancellation terms. Confirm whether any legacy OpEx90 course purchase remains available before relying on an old link. Choose the level according to the team’s project responsibility and existing knowledge, not solely the prestige of the belt name.
Current Dan Feliciano Academy information and Six Sigma comparison pages consulted October 5, 2026: source 1, source 2, source 3.
Score breakdown
Belt programs and team training; specifics not visible.
Practitioner brand; no accreditation stated.
Higher prices than many self-paced options.
Online delivery.
Support details unverified.
Weighted average of five criteria. Read our methodology.
Key facts
FAQ
Is OpEx90 still active?
opex90.com now redirects to the Dan Feliciano Academy.
How much are OpEx90 belts?
Pricing shared by the provider lists $595, $1,895 and $3,895; verify on the official site.
Sources
- https://danfeliciano.com/academy
- https://opex90.com/jv
- https://opex90.com/
- https://www.6sigma.us/
- https://leanscape.io/
Information checked on October 5, 2026. Prices and offers can change; confirm on the official site.





