Updated 8 May 2026
Ooni Karu 16 vs Karu 12G — Same Family, Different Sizes
The Ooni Karu 12G and Karu 16 — now Karu 2 and Karu 2 Pro respectively — are the same oven concept at two sizes. Both run gas, wood, and charcoal. Both hit 950°F. Both use stainless construction with ceramic insulation. The differences are stone size, weight, price — and what those differences mean for your hosting profile.
This comparison cuts through the size-class confusion (Ooni renamed both ovens during the 2025 Gen-2 refresh) and tells you which Karu fits which buyer.
Side-by-side spec table
| Spec | Karu 2 Pro (formerly Karu 16) | Karu 2 (formerly Karu 12G) | Edge |
|---|---|---|---|
| Max temperature | 950°F | 950°F | Tie (same chamber design) |
| Fuel options | Wood + Charcoal + Gas | Wood + Charcoal + Gas | Tie (same multi-fuel platform) |
| Stone diameter | 17" | 13.3" | Karu 2 Pro (+3.7") |
| Pizza size capacity | 16-inch pies | 12-inch pies | Karu 2 Pro (NY-style fits) |
| Build material | stainless steel | stainless steel | Tie |
| Weight | 62.6 lbs | 33.6 lbs | Karu 2 (~half the weight) |
| Dimensions | 19.8x32.4x32.4 | 16.5x28.3x30.3 | Karu 2 Pro takes more counter space |
| Portable | Yes (technically) | Yes (genuinely) | Karu 2 (one-person carry) |
| MSRP | $849 | $449 | Karu 2 ($400 cheaper) |
Where the Karu 2 Pro (16") wins
The 17-inch stone takes 16-inch NY-style pies with margin. If you cook NY-style regularly — or want the option of feeding a family with a single large pie rather than serially cooking 12-inch rounds — the Karu 2 Pro's stone size is the headline feature. The 12-inch Karu can't physically fit a 16-inch pie; you have to scale down or run multiple cooks.
Hosting throughput is the second case. A Karu 2 Pro feeding 12 people serves them across 6-8 large pies; the Karu 2 needs 12 individual 11-12 inch pies for the same group. With recovery time included, the Karu 2 Pro finishes the cook ~30-45% faster at scale.
The Karu 2 Pro also handles charcoal more cleanly — the larger fuel chamber accommodates more lump charcoal, holding heat longer between fuel additions during long entertaining cooks.
Where the Karu 2 (12") wins
33.6 lbs vs 62.6 lbs is the largest single difference between the two. The Karu 2 is genuinely a one-person carry — fits in a sedan trunk, transports to camp/tailgate without two people lifting. The Karu 2 Pro is technically portable (it has carry handles) but realistically a two-person move.
Price advantage: Karu 2 sits at $449, Karu 2 Pro at $849. That $400 delta funds a stand, an oven cover, a pizza peel, and a 20-lb propane tank with change left over.
Storage and footprint also tilt toward the Karu 2 — fits a standard garage shelf vs the Karu 2 Pro's larger storage footprint.
Throughput math
For a 12-person hosting cook (assuming 1 pie per person):
| Oven | Pizzas per pie | Pies needed | Cycle (cook + recovery) | Total cook time (after preheat) |
|---|---|---|---|---|
| Karu 2 Pro (16") | 1.5 (split a 16" into 2 servings) | ~8 pies | ~3.5 min | ~28 min |
| Karu 2 (12") | 1.0 (one 12" per person) | 12 pies | ~3 min | ~36 min |
The Karu 2 Pro saves ~8 minutes on a 12-person cook — meaningful but not transformative. The bigger advantage of the Pro is that you can serve multiple people from a single pie if the group is willing to share.
The Gen-2 naming confusion
Ooni's 2025 Gen-2 refresh renamed both ovens:
- Karu 12G → Karu 2 (same oven, new badge)
- Karu 16 → Karu 2 Pro (same oven, new badge)
Ooni explicitly states the renames don't reflect spec changes — these are nameplate refreshes only. Used Karu 12G listings on Facebook Marketplace are functionally identical to new Karu 2 listings; same for Karu 16 → Karu 2 Pro.
Decision rules
- If you cook for 4-8 people most weekends — Karu 2. The 12-inch capacity is plenty; the weight + price savings matter.
- If you cook for 8-15 people most weekends — Karu 2 Pro. The 16-inch capacity earns its premium.
- If you camp / tailgate / move the oven frequently — Karu 2. The weight differential is decisive.
- If you cook NY-style as a primary style — Karu 2 Pro. NY-style needs the 16-inch stone.
- If you want the cheapest multi-fuel Neapolitan oven — Karu 2. $449 is the segment price-leader.
- If money isn't tight — Karu 2 Pro. The capacity flexibility pays back over the ownership window.
The verdict
For most buyers, the Karu 2 is the rational pick — half the weight, $400 cheaper, same Neapolitan capability, fits a standard hosting profile of 4-8 people. The Karu 2 Pro is the right answer for two specific buyers: NY-style cooks who need 16-inch capacity, and entertainers who regularly host 10+ people. Outside those use cases, the Pro's premium doesn't pay back.
FAQ
Is there any spec advantage to the Karu 2 Pro besides stone size?
Marginally — the larger fuel chamber holds wood and charcoal longer between additions, easing extended cooks. Max temp, build material, and chamber design are otherwise identical.
Can I cook a 12-inch pizza in the Karu 2 Pro?
Yes — the larger stone gives you more launching margin for 12-inch rounds, not less. The Pro is a strict superset of the smaller Karu's cooking capability.
How does the gas burner accessory differ between the two?
The Karu 2 and Karu 2 Pro use different gas burner accessories — they're sized to the chamber. Don't cross-compatible them.
Do they share a chimney design?
Conceptually yes (both vertical chimneys with adjustable damper) but the Pro's is taller to accommodate the larger chamber. Replacement parts aren't cross-compatible.
Use the tools
- Pizza Throughput Calculator — match ovens to your party size
- Neapolitan Fit Checker — confirm stone size for your target dough
Related reading
- Best Portable Pizza Ovens — 2026 Spec-Tier List
- Ooni vs Gozney — Spec Comparison Across 5 Pairings
- What Makes a Pizza Oven "Neapolitan"?
- Browse all oven spec profiles
Sources: Manufacturer spec sheets cited in /data/ovens.json.