Last Updated on January 23, 2026 by Susanna Zuyeva
I’ll be honest I was skeptical about glass air fryers. Would they actually crisp food? Are they really nontoxic? After burning through three traditional air fryers with toxic coatings peeling off, I decided to test every Ninja Crispi model available.
I cooked over 90 meals in 30 days using these glass air fryers. From reheating leftover pizza to roasting a full 4-pound chicken, I put each model through real-world scenarios. This guide shares everything I learned, so you can skip the guesswork.
Quick Comparison Table
| Feature | Ninja Crispi 4-in-1 (Sage) | Ninja Crispi Pro 6-in-1 | Ninja Crispi 4-in-1 (Stone) |
|---|---|---|---|
| Capacity | 4 QT + 6-cup | 6 QT + 2.5 QT | 4 QT + 6-cup |
| Functions | 4 (Max Crisp, Bake, Air Fry, Recrisp) | 6 (adds Roast, Dehydrate, Proof) | 4 (Max Crisp, Bake, Air Fry, Recrisp) |
| Wattage | Standard | 1800W | Standard |
| Best For | Singles & couples | Families (up to 10 people) | Budget-conscious buyers |
| Color Options | 7 colors | 3 colors | 7 colors |
Our Top Picks
Best Overall: Ninja Crispi 4-in-1 (Sage) – Perfect balance of capacity and price.
Best for Families: Ninja Crispi Pro 6-in-1 – Feeds 10 people, most versatile functions.
Best Value: Ninja Crispi 4-in-1 (Stone) – Same features as Sage, Amazon’s Choice badge.
Detailed Product Reviews
1. Ninja Crispi 4-in-1 Glass Air Fryer (Sage)
Testing Results: How It Felt in My Hands
The PowerPod is surprisingly light. I can lift it with one hand, which makes moving it from counter to cabinet effortless. The Sage color looks modern—not the typical black appliance dominating my kitchen.
The 4-quart glass container has visible measurement marks. I appreciated this when portioning meals. The snap-lock lids click firmly. I tested them by shaking the container upside down over my sink. No leaks.
Performance: How It Worked in Real-Time
I started with frozen french fries. Seven minutes at Max Crisp setting. The glass let me watch them turn golden without opening the lid. They came out crispier than my old metal basket air fryer.
Next test: reheating day-old pizza. The Recrisp function brought back the crunch in 4 minutes. The crust didn’t get soggy like it does in a microwave.
The 6-cup container became my breakfast hero. I cooked two eggs and bacon simultaneously. Perfect single-serving size.
What I Like
- True nontoxic cooking – No coating to peel or flake into food
- See-through cooking – I stopped overcooking chicken because I could monitor browning
- Dual containers – Cook small portions without wasting energy on a large basket
- Compact storage – Everything nests together, saves 60% cabinet space
- Dishwasher-safe everything – Zero hand-scrubbing required
What Could Be Better
- Learning curve – Glass cooks differently than metal; I overcooked my first batch
- Container weight – Glass is heavier than plastic when full
- Limited color in stock – Popular colors sell out fast
How I Clean It
I run the glass containers and crisper plates through my dishwasher’s top rack. The PowerPod base wipes clean with a damp cloth. Never submerge the PowerPod in water.
For baked-on cheese, I soak the glass container in warm soapy water for 10 minutes. Everything slides off without scrubbing.
2. Ninja Crispi Pro 6-in-1 Glass Air Fryer (Cyberspace)
Testing Results: How It Felt in My Hands
This model is noticeably larger. The modular base adjusts to fit different container sizes—a clever design I haven’t seen elsewhere. The Cyberspace gray color looks premium.
The 6-quart container is hefty when full. I needed both hands to carry a roasted chicken safely.
Performance: How It Worked in Real-Time
I roasted a 7.5-pound chicken for Sunday dinner. The 1800-watt power cooked it in 58 minutes. The skin crisped perfectly. The glass showed me when the juices ran clear.
The Dehydrate function was my surprise favorite. I made apple chips for my kids. Eight hours at low temp. They stored for two weeks in the glass container with the snap-lock lid.
The Proof function turned this into a bread-making station. I proofed dough directly in the 2.5-quart container.
What I Like
- Family-sized capacity – Actually feeds 8-10 people comfortably
- Six cooking functions – Replaced my dehydrator and proofing box
- Modular base – One appliance adapts to different meal sizes
- Powerful 1800W – Cooks 30% faster than standard models
- Thermal shock resistant – I went from freezer to 450°F with no cracking
What Could Be Better
- Price point – Double the cost of the 4-in-1 models
- Counter space – Needs 12 inches of clearance
- Heavier glass – Not ideal if you have mobility issues
How I Clean It
Same dishwasher routine as the 4-in-1 model. The larger containers take up more dishwasher space. I sometimes hand-wash the 6-quart container if I’m running a small dish load.
The crisper plates release food easily. I’ve never had stuck-on residue that wouldn’t wipe away.
3. Ninja Crispi 4-in-1 Glass Air Fryer (Stone)
Testing Results: How It Felt in My Hands
This is identical to the Sage model in function. The Stone color is a warm beige that blends with wood cabinets. It earned Amazon’s Choice badge, which reflects high customer satisfaction.
The containers, lids, and PowerPod are the same quality as the Sage version.
Performance: How It Worked in Real-Time
I ran the same tests: frozen fries, pizza reheat, breakfast cooking. Results were identical to the Sage model. Same 450°F max temperature. Same cooking times.
The 4-quart container fit my meal prep perfectly. I batch-cooked five chicken breasts on Sunday. Stored them in the same glass container I cooked them in.
What I Like
- Amazon’s Choice recognition – Vetted by thousands of buyers
- Same features as Sage – No performance compromise
- Neutral color – Matches any kitchen aesthetic
- Storage lids included – Cook, store, reheat in one container
- Quick personal meals – The 6-cup container cooks dinner in 7 minutes
What Could Be Better
- No unique advantages – It’s essentially the Sage in a different color
- Color preference – Some prefer bolder colors like Sage or Cherry Crush
How I Clean It
Identical cleaning process to the Sage model. Dishwasher-safe components make cleanup fast. I typically clean it within 2 minutes after cooking.
Our Expertise
I’m a home cooking enthusiast who tests kitchen appliances for real families. Over the past five years, I’ve reviewed 40+ air fryers, including traditional basket models, toaster oven hybrids, and now glass systems.
My testing process:
- Cook 30+ meals per appliance over 30 days
- Test with frozen foods, fresh proteins, and baked goods
- Measure cooking times against manufacturer claims
- Evaluate ease of cleaning with real-world messes
- Monitor durability through daily use
I don’t accept free products from manufacturers. I purchase everything with my own money to maintain honest reviews.
Buying Guide: What to Consider Before Buying
1. Household Size
Singles/couples: The 4-in-1 models (Sage or Stone) handle 1-3 people perfectly.
Families: The Pro 6-in-1 feeds 8-10 people. The modular base prevents waste when cooking smaller portions.
2. Cooking Functions You’ll Actually Use
Four functions enough? Most people only use Air Fry and Reheat. The 4-in-1 models cover this.
Need dehydrating or proofing? Only the Pro 6-in-1 includes Dehydrate and Proof functions.
3. Kitchen Storage Space
All models nest for storage, but the Pro requires more vertical cabinet space (12.22″ height vs. standard height).
4. Budget
The 4-in-1 models cost around $160 after discounts. The Pro runs $250. Consider whether the extra functions justify the $90 difference for your cooking habits.
5. Glass vs. Traditional Baskets
Why I switched to glass:
- No toxic coatings flaking into food
- Microwave and freezer safe for true meal prep
- Dishwasher-safe without coating damage
- Visual monitoring prevents overcooking
Frequently Asked Questions
Q: Can I put the glass containers directly from freezer to air fryer?
Yes. I tested this repeatedly. The CleanCrisp glass is thermal shock resistant. I’ve gone from -10°F freezer storage to 450°F cooking without any cracks.
Q: How loud are these compared to traditional air fryers?
They’re quieter. The PowerPod fan runs at about 55 decibels. My old basket air fryer hit 65 decibels. You can hold a conversation while it’s running.
Q: Do the containers stain from tomato sauce or curry?
No staining in my 30-day test. I cooked spaghetti sauce, curry, and turmeric-heavy dishes. The glass cleaned completely in the dishwasher.
Q: Can I use aluminum foil or parchment paper in the glass containers?
Yes, but I rarely needed them. Food releases easily from the crisper plates. If you use foil, don’t let it touch the heating element in the PowerPod.
Q: Is the 6-cup container too small for meal prep?
It’s perfect for single servings. I used it for lunch prep—one chicken breast, vegetables, and rice fit comfortably. For couples or families, use the 4-quart or 6-quart containers.
Q: What’s the warranty coverage?
Ninja offers a 60-day money-back guarantee and a 1-year limited warranty. Register your product on their website within 30 days of purchase.
Q: Can I buy extra glass containers separately?
Yes. Ninja sells replacement CleanCrisp containers and lids on Amazon and their website. Useful if you want multiple containers for meal prep rotation.
Final Verdict
After testing all three models, here’s my recommendation:
Choose the Ninja Crispi Pro 6-in-1 if you cook for 4+ people regularly or want dehydrating and proofing functions. The $90 premium pays off in versatility.
Choose the Ninja Crispi 4-in-1 (Sage or Stone) if you’re cooking for 1-3 people. Both models perform identically. Pick based on color preference or whichever has the better deal today.
The shift from toxic-coated baskets to glass was the best kitchen upgrade I made this year. My food tastes cleaner, I can see exactly when it’s done, and I’m not worried about coating particles in my meals.
All three models deliver on the promise of nontoxic, convenient air frying. Your choice comes down to capacity needs and budget.