Why we tested the COSORI Pro Gen 2 5.8-Qt
Smart kitchen appliances have had a credibility problem for years. WiFi connectivity sounds useful in a press release and often delivers frustrating, laggy, unreliable performance in practice. Many “smart” kitchen devices require app updates to maintain basic functionality, connect to 5GHz-only networks that struggle through walls, or implement app features so poorly that users disable connectivity and use the devices manually after the first week.
COSORI’s VeSync ecosystem is one of the few smart kitchen implementations with genuine positive reputation for reliability. The Pro Gen 2 is the air fryer in that ecosystem, and we wanted to test whether the connectivity reputation holds up through real extended use - not just the first week when everything is fresh and connected.
The Gen 2 is priced at $120, a $20 premium over the Pro LE. The question is whether WiFi connectivity, the 0.8-quart extra capacity, and app access justify $20 extra - and whether the smart features are genuinely useful or largely ignored after setup.
How we tested
Standard 40+ session protocol applied, with additional smart-feature specific tests. We logged every remote command sent from the VeSync app and noted execution latency (time from tap to appliance response). We tested voice control via Amazon Alexa across 30 command attempts, logging success/failure rate and any misinterpretations. We deliberately disconnected the WiFi router during active cooks to test failover behavior - does the unit continue the current cook or fail?
App recipe testing: we followed 10 different app-guided recipes from start to finish, including multi-step recipes that use the shake reminder feature. We noted whether the app’s suggested times and temperatures matched our internal temperature verification results. Cooking performance tests matched the Pro LE protocol for direct comparison, since both use the same heating architecture.
Performance
Cooking performance is essentially identical to the COSORI Pro LE - not surprisingly, given that the Gen 2 uses the same basket geometry and similar heating element with a slightly higher 1700W rating versus the Pro LE’s 1500W. The 1700W element means temperature recovery after loading cold food is marginally faster, and we measured a slight but noticeable improvement in the first 5 minutes of high-temperature cooks like 400°F chicken wings.
Chicken wings at 400°F for 22 minutes (flip at 11 minutes) produced identical results to the Pro LE test: shatteringly crisp skin, 175°F interior. Frozen fries at 380°F for 14 minutes matched the Pro LE’s even golden result. The 5.8-quart basket is 16% larger than the 5-quart Pro LE, which is a real if modest capacity improvement - roughly one extra chicken thigh or two extra servings of fries per batch.
The smart features held up better than expected. VeSync app commands executed in 1-2 seconds across the test period, with two dropped-connection incidents both recovering automatically. The 30 voice-command attempts through Alexa produced 28 successful executions, one misinterpretation (“turn off the air fryer” heard as “turn on the air fryer”), and one non-response. A 93% voice command success rate over 30 trials is competitive with dedicated smart home devices. WiFi dropout during an active cook gracefully continued the cooking session without interruption - the unit keeps running its last command state.
The app recipe library has genuine utility. A recipe for teriyaki salmon at 380°F for 12 minutes, with a flip-and-glaze reminder at the 6-minute mark, produced excellent results - the shake reminder actually changed cooking behavior in a useful way, since salmon benefits from being repositioned mid-cook.
Who should buy this
The COSORI Pro Gen 2 is the right choice for anyone who wants smart appliance integration that genuinely works, or who cooks regularly from recipes rather than intuition. The extra $20 over the Pro LE buys you reliable app connectivity, 16% more basket capacity, and a voice-control experience that’s actually functional rather than a marketing checkbox. If you have no interest in app control and are happy with presets, save $20 and buy the Pro LE. If you’re already in the Amazon Alexa or Google Home ecosystem and want your air fryer to participate meaningfully, the Gen 2 earns its smart label.
COSORI Pro Gen 2 5.8-Qt Air Fryer vs. the competition
| Product | Verdict |
|---|---|
| COSORI Pro LE 5-Qt | Also Great - save $20 and skip smart features if you don't want app dependency. |
| Ninja AF101 | Skip for smart cooking - no WiFi, no app, no voice control. |
| Instant Vortex Plus 6-Qt | Alternative - slightly larger basket but no smart features. |
Full specifications
| Capacity | 5.8 quart |
| Wattage | 1700 W |
| Temperature Range | 170-400°F |
| Dimensions | 12.6 x 11.4 x 13.1 inches |
| Weight | 12.1 lbs |
See full details on Amazon →
Should you buy the COSORI Pro Gen 2 5.8-Qt Air Fryer?
The Gen 2's VeSync app integration is the most usable smart cooking implementation we've tested - not gimmicky, not laggy, and actually helpful for multi-step recipes that benefit from remote monitoring. The underlying cooking performance matches the Pro LE's proven results.
Frequently asked questions
Does the COSORI Pro Gen 2 work without the app?+
Yes, the unit has full manual control via the touchscreen panel without requiring a phone or WiFi connection. You lose access to the recipe library, remote monitoring, and shake reminders, but all temperature and timer controls work locally. The app enhances the experience rather than gating basic functionality.
How reliable is the WiFi connectivity?+
We tested connectivity over 8 weeks across 50+ cooking sessions and experienced two dropped connections, both of which reconnected automatically within 30 seconds. COSORI's VeSync app uses a 2.4GHz WiFi protocol, which has better range than 5GHz in typical home environments. We did not experience the persistent connectivity issues reported with some competing smart kitchen appliances.
📅 Update log
- May 27, 2026Initial review published.
