Benchmarks / DeckBench / Pantry Lane

Measured by Spring Prompt

Gemini 3.1 Pro Preview: Paid media: H1 2026 allocation

For the CMO and the finance director. The decision it supports: how to allocate the £2.4m paid media budget for H1 2026.

Verdict
Presentable
Deck rating
867
Slides
6 (brief: 5-8)
Design quality
67%
  1. Slide 1 of Gemini 3.1 Pro Preview's deck
    Slide 1Polished
  2. Slide 2 of Gemini 3.1 Pro Preview's deck
    Slide 2Acceptable The generic title does not communicate the main recommendation.'Executive Summary' is a topic label; a takeaway title would serve better
  3. Slide 3 of Gemini 3.1 Pro Preview's deck
    Slide 3Polished 'Total Average' bar is styled the same as the channel bars; it should be a reference line or a distinct colour
  4. Slide 4 of Gemini 3.1 Pro Preview's deck
    Slide 4Acceptable The introductory paragraph and concluding bullets make the slide text-heavy.Table is indented differently from the body text and sits tight under the intro paragraph
  5. Slide 5 of Gemini 3.1 Pro Preview's deck
    Slide 5Acceptable The title names a topic rather than stating the investment recommendation.Topic-style title rather than a takeaway
  6. Slide 6 of Gemini 3.1 Pro Preview's deck
    Slide 6Acceptable The title states the budget total but leaves the main reallocation takeaway implicit.Table duplicates the chart data, which adds clutter