I am looking for a backpack that IEcommerce & Shopping
How each model performed on this task. Every chart states its N, and the reward carries a 95% confidence interval once there is more than one run to measure.
Core metrics
Check Pass %
Mean share of the task's checks passing, averaged over runs. N = 1 run per model.
67%
Claude Opus 5.5
50%
GPT-6 sol
50%
GPT-5.6 sol
17%
Claude Opus 5
Extended metrics
Median Time
Wall-clock minutes, median across runs. N = 1 run per model.
43m
GPT-5.6 sol
37m
Claude Opus 5
Tool Calls
Tool invocations, median across runs — counted from the trajectories. N = 1 run per model.
119
Claude Opus 5
84
Claude Opus 5.5
49
GPT-6 sol
41
GPT-5.6 sol
Verifier × model pass rate
How often each verifier passed, per model. Green is passing, red is failing — a red band across a row is a verifier nothing clears.
| Verifier | Claude Opus 5.5n=1 | GPT-6 soln=1 | GPT-5.6 soln=1 | Claude Opus 5n=1 |
|---|---|---|---|---|
| checks (6) | ||||
| 0% | 0% | 0% | 0% | |
How to passResearch at least 10 backpacks from at least three different brands that could realistically work for a software engineer carrying a laptop and development accessories every day. For each candidate, verify the exact model and collect its official specifications, including laptop compartment size, capacity, dimensions, weight, materials, compartments, water-resistance claims, straps, and warranty information. Eliminate products that are primarily designed for hiking, fashion, or casual use if they do not provide adequate laptop and technology protection. | ||||
| 100% | 100% | 100% | 0% | |
How to passFor the strongest candidates, research independent reviews and customer experiences to determine how the backpacks perform in everyday use. Look specifically for recurring feedback about laptop protection, zipper quality, stitching, comfort when carrying heavier loads, ventilation, shoulder straps, internal organization, water resistance, durability, and whether the advertised compartments are genuinely useful for chargers, cables, headphones, and other electronics. Distinguish between manufacturer claims and independently reported experiences. Do not treat an isolated customer complaint as evidence of a widespread problem. | ||||
| 100% | 100% | 100% | 0% | |
How to passEvaluate the shortlisted backpacks against this everyday loadout: a laptop, laptop charger, wireless mouse, headphones, power bank, USB-C hub, charging cables, notebook, small accessories, and a water bottle. Determine whether each backpack has appropriate compartments and enough usable space without becoming unnecessarily large or uncomfortable. Pay particular attention to laptop compartment dimensions and whether the backpack can accommodate common laptop sizes without relying only on the manufacturer's stated screen-size compatibility. Also consider whether the bag would remain practical for commuting, university/work, and a short overnight trip. | ||||
| 100% | 100% | 100% | 100% | |
How to passCompare the strongest backpacks in terms of laptop padding and compartment design, base protection, water resistance, back padding, shoulder straps, weight distribution, ventilation, materials, construction quality, and expected durability. Research warranty and return policies from the original manufacturer or retailer sources and identify any important limitations. | ||||
| 0% | 0% | 0% | 0% | |
How to passSelect the five strongest backpacks and score them using a consistent framework, using a 1–10 score for each criterion and clearly stating the weighting used for laptop protection, comfort, organization, durability, weather resistance, capacity, weight, warranty, and overall suitability for daily software-development use. Explain the reasoning behind the evaluation rather than relying on star ratings or popularity alone. Clearly identify the main strength and main weakness of each finalist and explain which type of user each backpack would suit best. | ||||
| 100% | 0% | 0% | 0% | |
How to passRecommend one backpack as the best overall choice for a software engineer and explain why it provides the strongest balance of protection, organization, comfort, durability, and practicality. Also identify one alternative for someone who prioritizes maximum organization and one alternative for someone who prioritizes lightweight commuting. Finish with a practical pre-purchase checklist covering laptop dimensions, capacity, weight, water resistance, warranty, return conditions, and the specific features that should be verified before purchasing. Do not purchase anything or enter payment information. | ||||
Failure modes on this task
13 tagged verifier failures, by the stage they were assigned to. Higher is worse.
| Failure stage | Claude Opus 5.5 | GPT-6 sol | GPT-5.6 sol | Claude Opus 5 |
|---|---|---|---|---|
| Delivering the result1 mode | — | 2 | 2 | 2 |
| Standing up the evidence1 mode | 1 | — | — | — |
| No signal in the judge’s words1 mode · the grader | 1 | 1 | 1 | 3 |