MODELDRIFT.WATCH

Sep 22 · Day 13

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 21the changePermalink

Picks read from the answer, in order
  1. Bose
  2. Sony
  3. Sennheiser
  4. Px7 S2e

For long-haul flights, the criteria for the "best" headphones change slightly from everyday use. You need top-tier Active Noise Cancellation (ANC) to drown out the low-frequency drone of the engines, supreme comfort so they don’t hurt your ears after 10 hours, long battery life, and portability (including a cable to plug into the in-flight entertainment).

Here is the ranked top 5 based on those specific travel needs:

1. Bose – QuietComfort Ultra

  • •The Verdict: The absolute best for long-haul travel.
  • •Why for flights: Bose practically invented aviation headsets, and it shows. The ANC on the QC Ultras is arguably the best on the market at eliminating airplane engine rumble. More importantly, they have a very low clamping force, making them the most comfortable headphones for a 15-hour flight. Unlike their main rival (the Sony XM5), they fold up compactly into a small travel case.
  • •Battery: 24 hours (with ANC on).
  • •Wired for In-Flight TV: Yes (cable included).

2. Sony – WH-1000XM5

  • •The Verdict: The best all-rounder with the smartest tech.
  • •Why for flights: The ANC is neck-and-neck with Bose, and they feature an "Auto NC Optimizer" that automatically adjusts the noise cancellation based on the atmospheric pressure in the airplane cabin. The battery life is stellar, and they charge incredibly fast (3 hours of playback from a 3-minute charge). The only reason they are #2 is that they do not fold on hinges, meaning their travel case takes up noticeably more room in your personal item.
  • •Battery: 30 hours (with ANC on).
  • •Wired for In-Flight TV: Yes (cable included).

3. Sennheiser – Momentum 4 Wireless

  • •The Verdict: The battery life king.
  • •Why for flights: If you are flying from New York to Singapore, having a layover, and flying somewhere else, these are for you. They boast an astonishing 60-hour battery life with ANC turned on. You can leave your charger packed away for the entire trip. While the ANC isn't quite as absolute as Bose or Sony, it is still excellent, and the sound quality for music is noticeably superior to both of them.
  • •Battery: 60 hours (with ANC on).
  • •Wired for In-Flight TV: Yes (cable and airplane two-prong adapter included).

4. Sony – WH-1000XM4

  • •The Verdict: The frequent-flyer favorite that refuses to step down.
  • •Why for flights: Even though these are the older generation (replaced by the XM5 at the #2 spot), seasoned business travelers still buy these specifically for flights. Why? Because they fold up. You get 95% of the ANC and sound quality of the newer XM5, but in a much more travel-friendly, compact form factor. They also frequently go on sale now, making them a great value.
  • •Battery: 30 hours (with ANC on).
  • •Wired for In-Flight TV: Yes (cable and airplane two-prong adapter included).

5. Bowers & Wilkins – Px7 S2e

  • •The Verdict: The premium luxury upgrade.
  • •Why for flights: If you find the plastic builds of Sony and Bose a bit cheap, B&W offers aluminum arms, memory foam, and premium fabrics. They look and feel like first-class travel accessories. The clamping force is well-balanced for long wear, the ANC is highly effective at blocking cabin noise, and the high-fidelity sound profile is incredibly rich.
  • •Battery: 30 hours (with ANC on).
  • •Wired for In-Flight TV: Yes (USB-C to 3.5mm cable included).

(Note: The Apple AirPods Max are noticeably absent from this list. While they have incredible ANC, they are very heavy for 10+ hour wear, have a battery life of only 20 hours, feature a highly protective-lacking travel case, and do not come with a cable to plug into the airplane TV—you have to buy a $35 proprietary cable separately).

SEP 22backPermalink

Picks read from the answer, in order
  1. Active Noise Cancellation
  2. Bose QuietComfort Ultra Headphones
  3. Sony WH-1000XM5
  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.

When ranking for long flights, Active Noise Cancellation (ANC) to block engine drone, comfort for 8+ hours of wear, battery life, and portability are the most important factors.

1. Bose QuietComfort Ultra Headphones

  • •Why it ranks #1 for flights: Bose has long been the king of aviation, and the QC Ultras are their masterpiece. They offer arguably the best ANC on the market for low-frequency rumble (like airplane engines). Furthermore, they are incredibly lightweight, have clamping force perfectly tuned to avoid headaches on 12-hour flights, and they fold down compactly into a protective travel case.
  • •Battery: Up to 24 hours
  • •Standout feature: "Immersive Audio" makes movies sound like a cinematic experience, and unmatched physical comfort.

2. Sony WH-1000XM5

  • •Why it ranks #2 for flights: Sony’s flagship headphones are in a dead heat with Bose for the best ANC and actually edge them out slightly on overall audio quality and microphone performance. The adaptive ANC automatically adjusts to the cabin pressure and noise around you. The only reason they sit at #2 for travel is that they do not fold on hinges; they only fold flat, meaning their travel case takes up more room in your carry-on.
  • •Battery: Up to 30 hours
  • •Standout feature: Lightning-fast charging (3 minutes of charge gives you 3 hours of playback—perfect for layovers).

3. Sennheiser Momentum 4 Wireless

  • •Why it ranks #3 for flights: If your primary concern is battery anxiety on ultra-long-haul flights (or multi-leg trips without adapter access), these are your undisputed champions. They boast a massive 60-hour battery life with ANC turned on. The sound quality is audiophile-grade, and the earcups are deep and plush. The ANC is excellent, though just a fraction of a step behind Bose and Sony.
  • •Battery: Up to 60 hours
  • •Standout feature: Unbeatable battery life—you could fly from New York to Singapore and back, and still have battery left.

4. Sony WH-1000XM4

  • •Why it ranks #4 for flights: Even though the XM5s (at #2) are the newer model, frequent flyers still swear by the older XM4s. Why? Because they fold up into a tiny footprint. They still feature world-class ANC, multipoint Bluetooth (easily switch between your iPad for movies and phone for music), and exceptional comfort. Since they are an older model, they are also often available at a great discount.
  • •Battery: Up to 30 hours
  • •Standout feature: The perfect blend of top-tier ANC and a highly compact, travel-friendly folding design.

5. Apple AirPods Max

  • •Why it ranks #5 for flights: If you are deeply entrenched in the Apple ecosystem, the seamless switching between your MacBook, iPad, and iPhone is a lifesaver in cramped airplane seats. The ANC is spectacular, and the Transparency mode is the best on the market when you need to speak to a flight attendant. However, they rank at #5 for travel due to three drawbacks: they are very heavy (which can cause neck fatigue on long flights), they have a polarizing "bra" case that offers no protection in a backpack, and you have to buy a separate, expensive cable if you want to plug into the in-flight entertainment system.
  • •Battery: Up to 20 hours
  • •Standout feature: Peerless aluminum build quality, Spatial Audio for Apple TV/movies, and instant ecosystem pairing.

Summary Recommendation:

  • •Buy the Bose QC Ultra if you want maximum comfort and silence for sleeping.
  • •Buy the Sony WH-1000XM5 if you want the best all-around tech and sound.
  • •Buy the Sennheiser Momentum 4 if you hate charging your devices.
Exact recordShowHideEach response verbatim, unrendered, with line numbers and its sha256

Deviation the day it changed

2026-09-21 permalink

Scored
answered
Received
2026-09-21 09:19:17 UTC
Run
20260921T090021Z-989a7c
Served by
Google AI Studio · HTTP 200 · finish stop
Size
3,782 characters · 2,216 tokens out incl. hidden reasoning · 31.2 s
Extracted picks, in order · confidence high
  1. Bose
  2. Sony
  3. Sennheiser
  4. Px7 S2e

Highlighted: the names the extractor took as picks, where they appear verbatim (4 of 4).

For long-haul flights, the criteria for the "best" headphones change slightly from everyday use. You need **top-tier Active Noise Cancellation (ANC)** to drown out the low-frequency drone of the engines, **supreme comfort** so they don’t hurt your ears after 10 hours, **long battery life**, and **portability** (including a cable to plug into the in-flight entertainment).
Here is the ranked top 5 based on those specific travel needs:
### 1. Bose – QuietComfort Ultra
* **The Verdict:** The absolute best for long-haul travel.
* **Why for flights:** Bose practically invented aviation headsets, and it shows. The ANC on the QC Ultras is arguably the best on the market at eliminating airplane engine rumble. More importantly, they have a very low clamping force, making them the most comfortable headphones for a 15-hour flight. Unlike their main rival (the Sony XM5), **they fold up compactly** into a small travel case.
* **Battery:** 24 hours (with ANC on).
* **Wired for In-Flight TV:** Yes (cable included).
### 2. Sony – WH-1000XM5
* **The Verdict:** The best all-rounder with the smartest tech.
* **Why for flights:** The ANC is neck-and-neck with Bose, and they feature an "Auto NC Optimizer" that automatically adjusts the noise cancellation based on the atmospheric pressure in the airplane cabin. The battery life is stellar, and they charge incredibly fast (3 hours of playback from a 3-minute charge). The only reason they are #2 is that **they do not fold on hinges**, meaning their travel case takes up noticeably more room in your personal item.
* **Battery:** 30 hours (with ANC on).
* **Wired for In-Flight TV:** Yes (cable included).
### 3. Sennheiser – Momentum 4 Wireless
* **The Verdict:** The battery life king.
* **Why for flights:** If you are flying from New York to Singapore, having a layover, and flying somewhere else, these are for you. They boast an astonishing **60-hour battery life** with ANC turned on. You can leave your charger packed away for the entire trip. While the ANC isn't *quite* as absolute as Bose or Sony, it is still excellent, and the sound quality for music is noticeably superior to both of them.
* **Battery:** 60 hours (with ANC on).
* **Wired for In-Flight TV:** Yes (cable and airplane two-prong adapter included).
### 4. Sony – WH-1000XM4
* **The Verdict:** The frequent-flyer favorite that refuses to step down.
* **Why for flights:** Even though these are the older generation (replaced by the XM5 at the #2 spot), seasoned business travelers still buy these specifically for flights. Why? Because **they fold up**. You get 95% of the ANC and sound quality of the newer XM5, but in a much more travel-friendly, compact form factor. They also frequently go on sale now, making them a great value.
* **Battery:** 30 hours (with ANC on).
* **Wired for In-Flight TV:** Yes (cable and airplane two-prong adapter included).
### 5. Bowers & Wilkins – Px7 S2e
* **The Verdict:** The premium luxury upgrade.
* **Why for flights:** If you find the plastic builds of Sony and Bose a bit cheap, B&W offers aluminum arms, memory foam, and premium fabrics. They look and feel like first-class travel accessories. The clamping force is well-balanced for long wear, the ANC is highly effective at blocking cabin noise, and the high-fidelity sound profile is incredibly rich.
* **Battery:** 30 hours (with ANC on).
* **Wired for In-Flight TV:** Yes (USB-C to 3.5mm cable included).
*(Note: The **Apple AirPods Max** are noticeably absent from this list. While they have incredible ANC, they are very heavy for 10+ hour wear, have a battery life of only 20 hours, feature a highly protective-lacking travel case, and do not come with a cable to plug into the airplane TV—you have to buy a $35 proprietary cable separately).*

End of response · 35 lines · 3,782 characters · sha256 f32cce605881e32d9f9663ee56d0c167f3d27479ba3069fa98f00526be234044

Reverted back to baseline

2026-09-22 permalink

Scored
answered
Received
2026-09-22 09:19:12 UTC
Run
20260922T090022Z-7ff13b
Served by
Google · HTTP 200 · finish stop
Size
3,761 characters · 1,922 tokens out incl. hidden reasoning · 17.6 s
Extracted picks, in order · confidence high
  1. Active Noise Cancellation
  2. Bose QuietComfort Ultra Headphones
  3. Sony WH-1000XM5
  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.
When ranking for long flights, **Active Noise Cancellation (ANC) to block engine drone, comfort for 8+ hours of wear, battery life, and portability** are the most important factors.
### 1. Bose QuietComfort Ultra Headphones
* **Why it ranks #1 for flights:** Bose has long been the king of aviation, and the QC Ultras are their masterpiece. They offer arguably the best ANC on the market for low-frequency rumble (like airplane engines). Furthermore, they are incredibly lightweight, have clamping force perfectly tuned to avoid headaches on 12-hour flights, and they **fold down compactly** into a protective travel case.
* **Battery:** Up to 24 hours
* **Standout feature:** "Immersive Audio" makes movies sound like a cinematic experience, and unmatched physical comfort.
### 2. Sony WH-1000XM5
* **Why it ranks #2 for flights:** Sony’s flagship headphones are in a dead heat with Bose for the best ANC and actually edge them out slightly on overall audio quality and microphone performance. The adaptive ANC automatically adjusts to the cabin pressure and noise around you. The only reason they sit at #2 for travel is that **they do not fold on hinges**; they only fold flat, meaning their travel case takes up more room in your carry-on.
* **Battery:** Up to 30 hours
* **Standout feature:** Lightning-fast charging (3 minutes of charge gives you 3 hours of playback—perfect for layovers).
### 3. Sennheiser Momentum 4 Wireless
* **Why it ranks #3 for flights:** If your primary concern is battery anxiety on ultra-long-haul flights (or multi-leg trips without adapter access), these are your undisputed champions. They boast a massive 60-hour battery life *with* ANC turned on. The sound quality is audiophile-grade, and the earcups are deep and plush. The ANC is excellent, though just a fraction of a step behind Bose and Sony.
* **Battery:** Up to 60 hours
* **Standout feature:** Unbeatable battery life—you could fly from New York to Singapore and back, and still have battery left.
### 4. Sony WH-1000XM4
* **Why it ranks #4 for flights:** Even though the XM5s (at #2) are the newer model, frequent flyers still swear by the older XM4s. Why? **Because they fold up into a tiny footprint.** They still feature world-class ANC, multipoint Bluetooth (easily switch between your iPad for movies and phone for music), and exceptional comfort. Since they are an older model, they are also often available at a great discount.
* **Battery:** Up to 30 hours
* **Standout feature:** The perfect blend of top-tier ANC and a highly compact, travel-friendly folding design.
### 5. Apple AirPods Max
* **Why it ranks #5 for flights:** If you are deeply entrenched in the Apple ecosystem, the seamless switching between your MacBook, iPad, and iPhone is a lifesaver in cramped airplane seats. The ANC is spectacular, and the Transparency mode is the best on the market when you need to speak to a flight attendant. However, they rank at #5 for travel due to three drawbacks: they are very heavy (which can cause neck fatigue on long flights), they have a polarizing "bra" case that offers no protection in a backpack, and you have to buy a separate, expensive cable if you want to plug into the in-flight entertainment system.
* **Battery:** Up to 20 hours
* **Standout feature:** Peerless aluminum build quality, Spatial Audio for Apple TV/movies, and instant ecosystem pairing.
***
**Summary Recommendation:**
* Buy the **Bose QC Ultra** if you want maximum comfort and silence for sleeping.
* Buy the **Sony WH-1000XM5** if you want the best all-around tech and sound.
* Buy the **Sennheiser Momentum 4** if you hate charging your devices.

End of response · 35 lines · 3,761 characters · sha256 b9bc59755da8e8bec77024ce471640bdcaf5e58a8d6785d1a7d418cea4cdbf82

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 2026-09-22 09:00:21 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
7 prior days with data; 5 matched the baseline value (2026-09-16, 2026-09-17, 2026-09-19, 2026-09-20, 2026-09-21)
Responses
deviation 2026-09-21 09:19:17 UTC, run 20260921T090021Z-989a7c; reverted 2026-09-22 09:19:12 UTC, run 20260922T090022Z-7ff13b
Detected
2026-09-22 · run 20260922T090022Z-7ff13b, started 2026-09-22 09:00:22 UTC · scorer v1 · severity rules r2
Permalink
https://modeldrift.watch/e/2026-09-22/P3/google/gemini-3.1-pro-preview/transient_anomaly/picks.top/
Event ID
2026-09-22:P3:google/gemini-3.1-pro-preview:transient_anomaly:picks.top

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