MODELDRIFT.WATCH

Sep 25 · Day 16

MINOR · GPT · QUESTION 24

GPT 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 24the changePermalink

Picks read from the answer, in order
  1. Bose QuietComfort Ultra Headphones
  2. Sony WH-1000XM6
  3. Bose QuietComfort Headphones
  4. Sennheiser Momentum 4 Wireless
  5. Bowers & Wilkins Px7 S3

Top 5 noise-cancelling headphones for long-haul flights

  • 1.Bose QuietComfort Ultra Headphones
    Best overall for class-leading cabin-noise cancellation, low clamping pressure, and excellent long-session comfort. Battery: roughly 24 hours.
  • 2.Sony WH-1000XM6
    Excellent ANC with stronger battery life—around 30 hours—and a foldable design. Great balance of sound quality, portability, and features.
  • 3.Bose QuietComfort Headphones
    Lighter and usually cheaper than the Ultra, while remaining exceptionally comfortable with highly effective ANC. Battery: roughly 24 hours.
  • 4.Sennheiser Momentum 4 Wireless
    Best for very long battery life—up to about 60 hours—and rich sound. ANC is good, though slightly behind Bose and Sony in aircraft cabins.
  • 5.Bowers & Wilkins Px7 S3
    Premium build and excellent sound with solid ANC and approximately 30 hours of battery life. Slightly less travel-focused than the top three.

Best pick for most travelers: Bose QuietComfort Ultra.
Best for battery life: Sennheiser Momentum 4.
Best balance of ANC, battery, and portability: Sony WH-1000XM6.

For seatback entertainment, carry the included audio cable and a two-prong airline adapter.

SEP 25backPermalink

Picks read from the answer, in order
  1. Bose QuietComfort Ultra Headphones
  2. Sony WH-1000XM6
  3. Bose QuietComfort Headphones
  4. Sennheiser Momentum 4 Wireless
  5. Apple AirPods Max

Top 5 noise-cancelling headphones for long-haul flights

  • 1.Bose QuietComfort Ultra Headphones — Best overall
    Excellent cabin-noise cancellation, lightweight comfort, and minimal clamping pressure. About 24 hours of battery life.
  • 2.Sony WH-1000XM6 — Best combination of ANC and features
    Superb noise cancellation, strong sound, compact folding design, and roughly 30 hours with ANC enabled.
  • 3.Bose QuietComfort Headphones — Best for comfort and value
    Exceptionally comfortable for extended wear, effective airplane ANC, physical controls, and around 24 hours of battery life.
  • 4.Sennheiser Momentum 4 Wireless — Best battery life
    Up to 60 hours per charge, excellent audio quality, and comfortable earcups. ANC is strong, though slightly behind Bose and Sony.
  • 5.Apple AirPods Max (USB‑C) — Best for Apple users
    Excellent ANC, transparency mode, and seamless Apple-device switching. Downsides are the heavier design, high price, and approximately 20-hour battery.

Best single pick: Bose QuietComfort Ultra
For very long itineraries without charging: Sennheiser Momentum 4
For Android users wanting maximum features: Sony WH-1000XM6

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

Deviation the day it changed

2026-09-24 permalink

Scored
answered
Received
2026-09-24 09:04:08 UTC
Run
20260924T090023Z-506a29
Served by
OpenAI · HTTP 200 · finish stop
Size
1,236 characters · 736 tokens out incl. hidden reasoning · 13.5 s
Extracted picks, in order · confidence high
  1. Bose QuietComfort Ultra Headphones
  2. Sony WH-1000XM6
  3. Bose QuietComfort Headphones
  4. Sennheiser Momentum 4 Wireless
  5. Bowers & Wilkins Px7 S3

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

## Top 5 noise-cancelling headphones for long-haul flights
1. **Bose QuietComfort Ultra Headphones**
Best overall for class-leading cabin-noise cancellation, low clamping pressure, and excellent long-session comfort. Battery: roughly 24 hours.
2. **Sony WH-1000XM6**
Excellent ANC with stronger battery life—around 30 hours—and a foldable design. Great balance of sound quality, portability, and features.
3. **Bose QuietComfort Headphones**
Lighter and usually cheaper than the Ultra, while remaining exceptionally comfortable with highly effective ANC. Battery: roughly 24 hours.
4. **Sennheiser Momentum 4 Wireless**
Best for very long battery life—up to about 60 hours—and rich sound. ANC is good, though slightly behind Bose and Sony in aircraft cabins.
5. **Bowers & Wilkins Px7 S3**
Premium build and excellent sound with solid ANC and approximately 30 hours of battery life. Slightly less travel-focused than the top three.
**Best pick for most travelers:** Bose QuietComfort Ultra.
**Best for battery life:** Sennheiser Momentum 4.
**Best balance of ANC, battery, and portability:** Sony WH-1000XM6.
For seatback entertainment, carry the included audio cable and a two-prong airline adapter.

End of response · 22 lines · 1,236 characters · sha256 bde991116e50e1b626d33de07ed3195644839dcb0b6102f002cde33d5d4d5c74

Reverted back to baseline

2026-09-25 permalink

Scored
answered
Received
2026-09-25 09:16:53 UTC
Run
20260925T090007Z-f08d1f
Served by
OpenAI · HTTP 200 · finish stop
Size
1,222 characters · 563 tokens out incl. hidden reasoning · 9.2 s
Extracted picks, in order · confidence high
  1. Bose QuietComfort Ultra Headphones
  2. Sony WH-1000XM6
  3. Bose QuietComfort Headphones
  4. Sennheiser Momentum 4 Wireless
  5. Apple AirPods Max

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

## Top 5 noise-cancelling headphones for long-haul flights
1. **Bose QuietComfort Ultra Headphones** — Best overall
Excellent cabin-noise cancellation, lightweight comfort, and minimal clamping pressure. About **24 hours** of battery life.
2. **Sony WH-1000XM6** — Best combination of ANC and features
Superb noise cancellation, strong sound, compact folding design, and roughly **30 hours** with ANC enabled.
3. **Bose QuietComfort Headphones** — Best for comfort and value
Exceptionally comfortable for extended wear, effective airplane ANC, physical controls, and around **24 hours** of battery life.
4. **Sennheiser Momentum 4 Wireless** — Best battery life
Up to **60 hours** per charge, excellent audio quality, and comfortable earcups. ANC is strong, though slightly behind Bose and Sony.
5. **Apple AirPods Max (USB‑C)** — Best for Apple users
Excellent ANC, transparency mode, and seamless Apple-device switching. Downsides are the heavier design, high price, and approximately **20-hour** battery.
**Best single pick:** Bose QuietComfort Ultra
**For very long itineraries without charging:** Sennheiser Momentum 4
**For Android users wanting maximum features:** Sony WH-1000XM6

End of response · 20 lines · 1,222 characters · sha256 4f0d1f032895f46618983a35a6efd2e8bd40ac0a81b4f2a86f84f8555c876c19

Record detailsShowHideModel version, runs, baseline, triage, permalink, event ID
Model
openai/gpt-5.6-sol
pinned openai/gpt-5.6-sol-20260709; alias resolved to openai/gpt-5.6-sol-20260709 at 2026-09-25 09:00:06 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
same picks, new order
Baseline
7 prior days with data; 4 matched the baseline value (2026-09-17, 2026-09-19, 2026-09-21, 2026-09-24)
Responses
deviation 2026-09-24 09:04:08 UTC, run 20260924T090023Z-506a29; reverted 2026-09-25 09:16:53 UTC, run 20260925T090007Z-f08d1f
Detected
2026-09-25 · run 20260925T090007Z-f08d1f, started 2026-09-25 09:00:07 UTC · scorer v1 · severity rules r2
Permalink
https://modeldrift.watch/e/2026-09-25/P3/openai/gpt-5.6-sol/transient_anomaly/picks/
Event ID
2026-09-25:P3:openai/gpt-5.6-sol:transient_anomaly:picks

Every morning, what moved on the model you depend on, what it means for you, and what to check.

$9 a month. Cancel any time. The next one tomorrow morning.

Get the daily brief

$99 once, for as long as modeldrift.watch runs. The first 100 buyers.

The record stays free. The brief is the reading of it.