MODELDRIFT.WATCH

Sep 30 · Day 21

MINOR · GEMINI · QUESTION 24

Gemini went back to its earlier list for a request for a ranked top 5 of noise-cancelling headphones.

Why it’s minor

The change lasted one day before the model went back.

The full answers

Each answer as the API returned it, with its Markdown rendered for reading. The highlights mark at most three decisive phrases, found with the scorer’s own patterns. Each model is asked once a day (k = 1), so one change can be sampling noise, which is why both answers are here in full. How scoring works.

Asked verbatim · Question 24

Best noise-cancelling headphones for long-haul flights — give me a ranked top 5 with brand and model.

SEP 29the changePermalink

Picks read from the answer, in order
  1. elite Active Noise Cancellation
  2. Bose
  3. Sony
  4. Sennheiser
  5. Apple

For long-haul flights, the criteria for the perfect headphone are highly specific: you need elite Active Noise Cancellation (ANC) to kill engine drone, extreme physical comfort for 8 to 15 hours of wear, long battery life, and a wired connection option for in-flight entertainment systems.

Here is the ranked top 5, specifically tailored for long-haul travel:

1. Bose – QuietComfort Ultra

The Undisputed King of the Cabin
Bose has long been the standard for frequent flyers, and the Ultra is their current masterpiece. The ANC is arguably the best on the market at completely erasing the low-frequency rumble of airplane engines. More importantly for long hauls, they are supremely comfortable, with soft earcups and perfect clamping force that won't cause headaches after 10 hours. Unlike its closest Sony rival, it actually folds up at the hinges to save space in your carry-on.

  • •Battery: 24 hours
  • •Flight Perk: Folds down compactly; Immersive Audio mode makes movies on your iPad sound like a theater.

2. Sony – WH-1000XM5

The Best All-Around Performer
Sony’s flagship headphones are a technological marvel. Their ANC is incredibly smart, featuring an "Atmospheric Pressure Optimizing" tool that actually adjusts the noise cancellation based on the cabin pressure at high altitudes. They are incredibly lightweight and sound fantastic. The only reason they sit at #2 for travel is their design: they do not fold at the hinges, meaning the protective travel case is quite large and takes up significant room in a personal item or backpack.

  • •Battery: 30 hours
  • •Flight Perk: Best-in-class microphone for taking a quick business call in a noisy airport terminal before boarding.

3. Sennheiser – Momentum 4 Wireless

The Battery Life Champion
If your itinerary includes a 14-hour flight, a 5-hour layover, and another 8-hour flight, these are the headphones for you. The Momentum 4 boasts an absolutely insane 60-hour battery life with ANC turned on. You could realistically fly around the world without packing the charger. While the ANC is slightly behind Bose and Sony, the audio quality for music is exceptionally rich and detailed.

  • •Battery: 60 hours
  • •Flight Perk: You will never experience battery anxiety on a travel day; includes an airplane two-prong adapter in the case.

4. Sony – WH-1000XM4

The Frequent Flyer Cult Classic
Even though the XM5s (listed at #2) replaced these, the XM4s remain massively popular among frequent flyers for one simple reason: they fold. You get 95% of the ANC capability and sound quality of the XM5, but in a footprint that folds down neatly into a much smaller travel case. They also feature the same atmospheric pressure optimization for airplane cabins. Because they are a slightly older model, they are often available at a great discount.

  • •Battery: 30 hours
  • •Flight Perk: The perfect balance of elite ANC and compact travel size.

5. Apple – AirPods Max

Best ANC and Build, but with Travel Caveats
Strictly in terms of noise cancellation and transparency mode (which is flawless for ordering drinks from the flight attendant without taking them off), the AirPods Max are top-tier. Watching a downloaded movie on an iPad or Apple TV with their Spatial Audio is an unmatched in-flight experience. However, they sit at #5 for flights due to three travel-specific drawbacks:

  • 1.They are heavy (metal build), which can cause top-of-head fatigue on a 12-hour flight.
  • 2.The included "smart case" offers zero protection in a stuffed backpack.
  • 3.If you want to plug into the seatback screen, you have to buy a proprietary $35 Apple Lightning-to-3.5mm cable (a standard aux cable will not work).
  • •Battery: 20 hours
  • •Flight Perk: Unmatched movie-watching experience if you are already in the Apple ecosystem.

A quick tip for your flight: Whichever model you choose, double-check your case to ensure you packed the 3.5mm audio cable! You will need it if you want to watch the airline's seatback movies.

SEP 30backPermalink

Picks read from the answer, in order
  1. Active Noise Cancellation
  2. Sony WH-1000XM5
  3. Bose QuietComfort Ultra
  4. Sennheiser Momentum 4 Wireless
  5. Sony WH-1000XM4
  6. Apple AirPods Max

Here is the ranked top 5 list of the best noise-cancelling headphones specifically for long-haul flights, ranked based on a combination of Active Noise Cancellation (ANC) to block engine drone, long-term comfort, battery life, and travel-friendly features.

1. Sony WH-1000XM5

  • •The Best Overall for Flights
  • •Battery Life: 30 hours (with ANC on)
  • •Why it ranks #1: Sony’s XM5s currently hold the crown for the smartest noise cancellation on the market. They use multiple microphones and processors to effortlessly block out the low, constant rumble of airplane engines as well as high-pitched noises like crying babies. They are incredibly lightweight with a plush, pressure-free headband, making them easy to wear for 15+ hours.
  • •Traveler’s Note: They come with a 3.5mm cable for the in-flight entertainment screen. The only minor drawback is that they do not fold on hinges like older models, meaning the carrying case takes up a bit more room in a personal item.

2. Bose QuietComfort Ultra

  • •Best for Ultimate Comfort & Immersion
  • •Battery Life: 24 hours (with ANC on)
  • •Why it ranks #2: Bose has long been the king of aviation audio. The "Ultra" is their newest flagship, offering ANC that goes toe-to-toe with Sony, but with superior physical comfort (hence the name). The clamping force is virtually non-existent, perfect for sleeping on a red-eye. They also feature Bose's "Immersive Audio" (spatial audio), which makes watching movies on your tablet feel like a theater experience.
  • •Traveler’s Note: Unlike the Sony XM5, the QC Ultras do fold up on hinges, making them much more compact and travel-friendly. A cable for airplane screens is included.

3. Sennheiser Momentum 4 Wireless

  • •Best Battery Life (Ultra-Long Haul)
  • •Battery Life: 60 hours (with ANC on)
  • •Why it ranks #3: If you are flying from New York to Singapore, having a long layover, and flying back—all without wanting to reach for a charger—these are the headphones for you. The 60-hour battery life is practically unheard of in this tier. Furthermore, Sennheiser offers the best pure, audiophile-grade sound quality on this list.
  • •Traveler’s Note: The ANC is excellent, though just a fraction of a hair less powerful than Sony or Bose. Like the Sony XM5s, they fold flat but do not collapse inward. They include an airplane two-prong adapter and a 3.5mm cable.

4. Sony WH-1000XM4

  • •Best Value & Portability Combo
  • •Battery Life: 30 hours (with ANC on)
  • •Why it ranks #4: Even though the XM5 replaced them, Sony kept the older XM4s in production for a reason: travelers love them. They offer 90% of the ANC power of the XM5s, but they fold up into a tiny footprint. Because they are a generation older, you can frequently find them heavily discounted, making them the smartest buy for frequent fliers who want premium features without the flagship price.
  • •Traveler’s Note: They include an airplane adapter and a 3.5mm cable, and the compact carrying case easily stuffs into tightly packed backpacks.

5. Apple AirPods Max

  • •Best for Apple Users (Despite the weight)
  • •Battery Life: 20 hours (with ANC on)
  • •Why it ranks #5: If you are downloading movies to an iPad or MacBook for your flight, the AirPods Max are hard to beat due to their seamless ecosystem integration and incredible Spatial Audio. The ANC is absolute top-tier, and the earcups are very breathable.
  • •Traveler’s Note: They rank at the bottom of the top 5 for flights due to three travel-specific drawbacks: they are heavy (which can cause neck fatigue on a 12-hour flight), the included "case" offers no protection in a backpack, and they do not come with a cable to plug into the seatback screen (you have to buy Apple's proprietary Lightning-to-3.5mm cable separately for $35).

Summary Recommendation:
If you want the absolute best noise-blocking power, buy the Sony WH-1000XM5. If you have limited space in your carry-on and prioritize physical comfort while trying to sleep, buy the Bose QuietComfort Ultra.

Exact recordShowHideEach response verbatim, unrendered, with line numbers and its sha256

Deviation the day it changed

2026-09-29 permalink

Scored
answered
Received
2026-09-29 09:18:13 UTC
Run
20260929T090007Z-334891
Served by
Google · HTTP 200 · finish stop
Size
4,062 characters · 2,573 tokens out incl. hidden reasoning · 20.8 s
Extracted picks, in order · confidence high
  1. elite Active Noise Cancellation
  2. Bose
  3. Sony
  4. Sennheiser
  5. Apple

Highlighted: the names the extractor took as picks, where they appear verbatim (5 of 5).

For long-haul flights, the criteria for the perfect headphone are highly specific: you need **elite Active Noise Cancellation (ANC)** to kill engine drone, **extreme physical comfort** for 8 to 15 hours of wear, long **battery life**, and a **wired connection option** for in-flight entertainment systems.
Here is the ranked top 5, specifically tailored for long-haul travel:
### 1. Bose – QuietComfort Ultra
**The Undisputed King of the Cabin**
Bose has long been the standard for frequent flyers, and the Ultra is their current masterpiece. The ANC is arguably the best on the market at completely erasing the low-frequency rumble of airplane engines. More importantly for long hauls, they are supremely comfortable, with soft earcups and perfect clamping force that won't cause headaches after 10 hours. Unlike its closest Sony rival, it actually folds up at the hinges to save space in your carry-on.
* **Battery:** 24 hours
* **Flight Perk:** Folds down compactly; Immersive Audio mode makes movies on your iPad sound like a theater.
### 2. Sony – WH-1000XM5
**The Best All-Around Performer**
Sony’s flagship headphones are a technological marvel. Their ANC is incredibly smart, featuring an "Atmospheric Pressure Optimizing" tool that actually adjusts the noise cancellation based on the cabin pressure at high altitudes. They are incredibly lightweight and sound fantastic. The only reason they sit at #2 for travel is their design: they do not fold at the hinges, meaning the protective travel case is quite large and takes up significant room in a personal item or backpack.
* **Battery:** 30 hours
* **Flight Perk:** Best-in-class microphone for taking a quick business call in a noisy airport terminal before boarding.
### 3. Sennheiser – Momentum 4 Wireless
**The Battery Life Champion**
If your itinerary includes a 14-hour flight, a 5-hour layover, and another 8-hour flight, these are the headphones for you. The Momentum 4 boasts an absolutely insane 60-hour battery life with ANC turned *on*. You could realistically fly around the world without packing the charger. While the ANC is slightly behind Bose and Sony, the audio quality for music is exceptionally rich and detailed.
* **Battery:** 60 hours
* **Flight Perk:** You will never experience battery anxiety on a travel day; includes an airplane two-prong adapter in the case.
### 4. Sony – WH-1000XM4
**The Frequent Flyer Cult Classic**
Even though the XM5s (listed at #2) replaced these, the XM4s remain massively popular among frequent flyers for one simple reason: they fold. You get 95% of the ANC capability and sound quality of the XM5, but in a footprint that folds down neatly into a much smaller travel case. They also feature the same atmospheric pressure optimization for airplane cabins. Because they are a slightly older model, they are often available at a great discount.
* **Battery:** 30 hours
* **Flight Perk:** The perfect balance of elite ANC and compact travel size.
### 5. Apple – AirPods Max
**Best ANC and Build, but with Travel Caveats**
Strictly in terms of noise cancellation and transparency mode (which is flawless for ordering drinks from the flight attendant without taking them off), the AirPods Max are top-tier. Watching a downloaded movie on an iPad or Apple TV with their Spatial Audio is an unmatched in-flight experience. **However, they sit at #5 for flights due to three travel-specific drawbacks:**
1. They are heavy (metal build), which can cause top-of-head fatigue on a 12-hour flight.
2. The included "smart case" offers zero protection in a stuffed backpack.
3. If you want to plug into the seatback screen, you have to buy a proprietary $35 Apple Lightning-to-3.5mm cable (a standard aux cable will not work).
* **Battery:** 20 hours
* **Flight Perk:** Unmatched movie-watching experience if you are already in the Apple ecosystem.
**A quick tip for your flight:** Whichever model you choose, double-check your case to ensure you packed the 3.5mm audio cable! You will need it if you want to watch the airline's seatback movies.

End of response · 38 lines · 4,062 characters · sha256 40c462a2b862efcecbef724fa8130adaaa818cee231aef8cd7b8f3cdd0a6c0c9

Reverted back to baseline

2026-09-30 permalink

Scored
answered
Received
2026-09-30 09:16:32 UTC
Run
20260930T090007Z-45ce12
Served by
Google · HTTP 200 · finish stop
Size
4,140 characters · 2,396 tokens out incl. hidden reasoning · 27.4 s
Extracted picks, in order · confidence high
  1. Active Noise Cancellation
  2. Sony WH-1000XM5
  3. Bose QuietComfort Ultra
  4. Sennheiser Momentum 4 Wireless
  5. Sony WH-1000XM4
  6. Apple AirPods Max

Highlighted: the names the extractor took as picks, where they appear verbatim (6 of 6).

Here is the ranked top 5 list of the best noise-cancelling headphones specifically for long-haul flights, ranked based on a combination of **Active Noise Cancellation (ANC) to block engine drone, long-term comfort, battery life, and travel-friendly features.**
### 1. Sony WH-1000XM5
* **The Best Overall for Flights**
* **Battery Life:** 30 hours (with ANC on)
* **Why it ranks #1:** Sony’s XM5s currently hold the crown for the smartest noise cancellation on the market. They use multiple microphones and processors to effortlessly block out the low, constant rumble of airplane engines as well as high-pitched noises like crying babies. They are incredibly lightweight with a plush, pressure-free headband, making them easy to wear for 15+ hours.
* **Traveler’s Note:** They come with a 3.5mm cable for the in-flight entertainment screen. The only minor drawback is that they do not fold on hinges like older models, meaning the carrying case takes up a bit more room in a personal item.
### 2. Bose QuietComfort Ultra
* **Best for Ultimate Comfort & Immersion**
* **Battery Life:** 24 hours (with ANC on)
* **Why it ranks #2:** Bose has long been the king of aviation audio. The "Ultra" is their newest flagship, offering ANC that goes toe-to-toe with Sony, but with superior physical comfort (hence the name). The clamping force is virtually non-existent, perfect for sleeping on a red-eye. They also feature Bose's "Immersive Audio" (spatial audio), which makes watching movies on your tablet feel like a theater experience.
* **Traveler’s Note:** Unlike the Sony XM5, the QC Ultras **do fold up on hinges**, making them much more compact and travel-friendly. A cable for airplane screens is included.
### 3. Sennheiser Momentum 4 Wireless
* **Best Battery Life (Ultra-Long Haul)**
* **Battery Life:** 60 hours (with ANC on)
* **Why it ranks #3:** If you are flying from New York to Singapore, having a long layover, and flying back—all without wanting to reach for a charger—these are the headphones for you. The 60-hour battery life is practically unheard of in this tier. Furthermore, Sennheiser offers the best pure, audiophile-grade sound quality on this list.
* **Traveler’s Note:** The ANC is excellent, though just a fraction of a hair less powerful than Sony or Bose. Like the Sony XM5s, they fold flat but do not collapse inward. They include an airplane two-prong adapter and a 3.5mm cable.
### 4. Sony WH-1000XM4
* **Best Value & Portability Combo**
* **Battery Life:** 30 hours (with ANC on)
* **Why it ranks #4:** Even though the XM5 replaced them, Sony kept the older XM4s in production for a reason: travelers love them. They offer 90% of the ANC power of the XM5s, but they **fold up into a tiny footprint**. Because they are a generation older, you can frequently find them heavily discounted, making them the smartest buy for frequent fliers who want premium features without the flagship price.
* **Traveler’s Note:** They include an airplane adapter and a 3.5mm cable, and the compact carrying case easily stuffs into tightly packed backpacks.
### 5. Apple AirPods Max
* **Best for Apple Users (Despite the weight)**
* **Battery Life:** 20 hours (with ANC on)
* **Why it ranks #5:** If you are downloading movies to an iPad or MacBook for your flight, the AirPods Max are hard to beat due to their seamless ecosystem integration and incredible Spatial Audio. The ANC is absolute top-tier, and the earcups are very breathable.
* **Traveler’s Note:** They rank at the bottom of the top 5 for flights due to three travel-specific drawbacks: they are heavy (which can cause neck fatigue on a 12-hour flight), the included "case" offers no protection in a backpack, and **they do not come with a cable** to plug into the seatback screen (you have to buy Apple's proprietary Lightning-to-3.5mm cable separately for $35).
***
**Summary Recommendation:**
If you want the absolute best noise-blocking power, buy the **Sony WH-1000XM5**. If you have limited space in your carry-on and prioritize physical comfort while trying to sleep, buy the **Bose QuietComfort Ultra**.

End of response · 36 lines · 4,140 characters · sha256 f4f00da88b354bbd57cb529c69a865a7cbc378478279e7948b100576fbf0924d

Record detailsShowHideModel version, runs, baseline, triage, permalink, event ID
Model
google/gemini-3.1-pro-preview
pinned google/gemini-3.1-pro-preview-20260219; alias resolved to google/gemini-3.1-pro-preview-20260219 at 2026-09-30 09:00:07 UTC (matches the pin)
Prompt
Question 24: P3 (recommendation)
Why this question
Asking for a ranked list makes a change in the order easy to see.
Change
first extracted pick differs from the baseline's (full lists below)
Baseline
6 prior days with data; 6 matched the baseline value (2026-09-22, 2026-09-23, 2026-09-25, 2026-09-27, 2026-09-28, 2026-09-29)
Responses
deviation 2026-09-29 09:18:13 UTC, run 20260929T090007Z-334891; reverted 2026-09-30 09:16:32 UTC, run 20260930T090007Z-45ce12
Detected
2026-09-30 · run 20260930T090007Z-45ce12, started 2026-09-30 09:00:07 UTC · scorer v1 · severity rules r2
Permalink
https://modeldrift.watch/e/2026-09-30/P3/google/gemini-3.1-pro-preview/transient_anomaly/picks.top/
Event ID
2026-09-30:P3:google/gemini-3.1-pro-preview:transient_anomaly:picks.top

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