Benchmarks / DeckBench / Wrenfield Borough Council

Measured by Spring Prompt

Claude Opus 5.5: Library services: choosing how to save £350,000

For the council's cabinet (elected members), meeting in public. The decision it supports: which of three options to adopt to save £350,000 a year from libraries.

Verdict
Not presentable
Deck rating
1,356
Slides
7 (brief: 5-8)
Design quality
79%

Why it is not presentable

  • Drew a conclusion from a figure without its caveat
  • A slide the judges rated as needing work

In detail

  • Caveat missing: respondents were mostly weekly users (82%, against 21% of card holders), not representative of residents.
  1. Slide 1 of Claude Opus 5.5's deck
    Slide 1Polished
  2. Slide 2 of Claude Opus 5.5's deck
    Slide 2Polished
  3. Slide 3 of Claude Opus 5.5's deck
    Slide 3Polished
  4. Slide 4 of Claude Opus 5.5's deck
    Slide 4Polished
  5. Slide 5 of Claude Opus 5.5's deck
    Slide 5Needs work The chart's library labels are cramped, with adjacent names nearly running together.X-axis labels break mid-word ('Westbroo / k', 'Kingsmea / d')
  6. Slide 6 of Claude Opus 5.5's deck
    Slide 6Acceptable The comparison table is text-heavy, and the recommended option B has no visual emphasis within it.A large empty gap sits between the table and the takeaway line, so the slide feels top-heavy
  7. Slide 7 of Claude Opus 5.5's deck
    Slide 7Polished The right card is mostly empty and its text reads as a fragment ('Of how the new hours…')