vs Perpetua · verified 2026 Q2
A Perpetua alternative
that shows its work.
Perpetua is well-designed and well-known. It is also a black box at $695/mo with no free trial and no inventory awareness. If you ever asked it why a bid changed and got a shrug, that is the gap Mirox closes.
See the side-by-sideAt a glance
Mirox vs Perpetua.
Mirox
Autonomous PPC Intelligence for Amazon sellers — multi-marketplace native, transparent, sixteen specialised agents.
- · Free Simulation Mode on your real account
- · Public pricing from €149/mo
- · Full decision trace per bid (CSV export)
- · Per-marketplace native: DE, FR, IT, ES, NL, BE, PL, SE, UK, US, CA, MX
Perpetua
Amazon-focused brands spending $100K+/month, US-anchored.
Starting price: $695/mo
Side-by-side
Where each tool lands on the rows that matter.
Verified against vendor pricing pages, G2 and Capterra, and 2026 Q2 analyst notes. No asterisks.
| Capability | Mirox | Perpetua |
|---|---|---|
| Simulation Mode — free, real account, full simulation | Free, no card | |
| Decision transparency — full trace per bid | CSV export | Black box |
| Multi-agent architecture (16 specialists) | Single engine | |
| Seven safety layers between the AI and your ad budget | Basic | |
| Inventory-aware bidding (Sentinel — throttles on thin days-of-cover) | Built in | |
| Bayesian warm-start — sensible bids from hour one | Needs data | |
| Multi-marketplace native (DE/FR/IT/ES/NL/BE/PL/SE/UK/US/CA/MX + per-marketplace thresholds) | US-first | |
| Asymmetric semantic embeddings (+19% relevance) | Symmetric | |
| Public, transparent pricing — no demo wall | €149 / €399 / €899 | % opaque |
| Free trial / freemium | Simulation Mode free, indefinitely | Demo only |
| Starting price | €149/mo (or free Simulation) | $695/mo |
Want the full six-vendor matrix? See the full /compare page.
The honest read
When Perpetua is the right answer, and when Mirox is.
Perpetua starts at $695/mo and targets brands spending $100K+/month. It is well-designed, but in 2026 reviews it is repeatedly called out for what it lacks: visibility into margins, inventory, or pricing — and decision logic that prospects cannot inspect.
Where Perpetua wins
Strong UI, established brand among Amazon-only sellers, broad keyword research integrations, mature account-management layer. If you want a familiar tool with a polished surface and you do not need to audit it, Perpetua fits.
Where Mirox wins
Every Mirox bid carries the predicted conversion rate, the relevance score, the agent that proposed it, and the safety checks that were applied. Inventory-aware bidding is built in — Perpetua has no inventory awareness. Simulation Mode lets you watch Mirox on your real account, free and indefinitely, before paying anything; Perpetua is demo-only with no free trial.
Honest verdict
Perpetua is a tool. Mirox is a team — sixteen specialised agents that each leave a trace you can audit. If you ever asked your current PPC tool why a bid changed and got a shrug, that is the gap.
A decision tree, not a sales pitch
Which one fits your team.
Pick Perpetua when
- ·You are US-based, Amazon-focused, and the brand recognition of an incumbent matters.
- ·You do not need to defend bid changes to a CFO or to a client with data.
- ·You are comfortable paying $695/mo before seeing what the AI would actually do.
Pick Mirox when
- You want a full audit trail on every bid, exportable as CSV.
- You sell across multiple EU marketplaces and a US tool with translation will not cut it.
- You want to watch the AI on your real account, for as long as you like, before you pay.
- Inventory-aware bidding is a requirement, not a wishlist item.
Frequently asked
Mirox vs Perpetua — the questions buyers actually ask.
- Why is Mirox cheaper than Perpetua?
- Perpetua starts at $695/month with no free trial and requires a demo before pricing visibility. Mirox publishes its prices: €149 Starter, €399 Growth, €899 Scale — flat, month-to-month, no percentage of spend. The pricing gap reflects two things: Mirox is Amazon-only by choice (no Walmart, no Instacart) and ships an indefinite free Simulation Mode tier instead of a sales motion.
- Does Mirox have inventory-aware bidding like Perpetua should?
- Yes — and Perpetua does not. Mirox includes Sentinel, an inventory-aware throttle that reads SP-API days-of-cover and reduces bid aggressiveness when an ASIN is at risk of stocking out. It is one of seven safety layers built in by default, not a paid add-on.
- How is the decision transparency different from Perpetua?
- Every Mirox bid exports as a trace containing the Bayesian conversion estimate, the relevance score, the agent that proposed the change, the alternatives ruled out, and which of the seven safety gates were checked. Perpetua surfaces a final number on the dashboard — not the reasoning behind it. The trace is CSV-exportable for audit.
Compare against your own Perpetua setup
The matrix is one thing. Your account is another.
Public Simulation Mode opens after the beta wraps. Once it does, watch it on your real account, side-by-side with Perpetua — free, no card, read-only, for as long as you like, before a cent moves. Spending $5K+/month? Apply for a beta seat now.
Matrix verified 2026 Q2 · disagree with a row? info@mirox.pt