Rewrite · 6 checks · max 400 tokens · benched 2026-09-16
Meta models side by side on "Jargon to plain English for a 12-year-old": Llama 4 Scout scores 9/10; Llama 4 Scout is the cheapest answer scoring 8+ at $0.03 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.
User
Rewrite this paragraph so a 12-year-old would understand it. Keep it under 70 words and do not use the words "leverage", "synergy" or "paradigm". Output only the rewritten paragraph. Paragraph: Our next-generation battery architecture leverages a solid-state electrolyte paradigm to achieve synergy between energy density and thermal stability, enabling a 40% increase in range while mitigating the combustion risk profile associated with legacy lithium-ion chemistries.
Rubric for the judge: Simple vocabulary, keeps the 40% range gain and the safety point, under 70 words, banned words absent.
Every cell is one OpenRouter call at temperature 0 with the prompt's token cap and reasoning effort "low" where the model supports it. Cost is usage × the catalogue rate in models.json. Quality is one judge call to anthropic/claude-haiku-4.5 against the prompt's rubric, cached per prompt version.
meta/muse-spark-1.3
0 in · 0 out · 0 words · checks 0/6
(empty output)
Judge: —
meta/muse-glimmer-30b
147 in · 255 out (203 reasoning) · 39 words · checks 6/6
Our new battery uses a solid material instead of liquid inside. This makes it safer and harder to catch fire. It also holds more power, so cars can go about 40% farther on one charge than old lithium-ion batteries.
Judge: Excellent simplification for a 12-year-old, includes the 40% range gain and safety benefit, avoids all banned words, and is 43 words—well under the 70-word limit; only minor issue is 'lithium-ion' might still be slightly technical but is necessary for accuracy.
meta-llama/llama-4-maverick
100 in · 49 out · 42 words · checks 6/6
Our new battery design uses a special safe material to make batteries more powerful and less likely to overheat. This means electric cars can go 40% farther on a single charge and are safer than older batteries, reducing the risk of fires.
Judge: Excellent rewrite: simple vocabulary, includes 40% range gain and safety benefits, avoids all banned words, and is 38 words (well under 70-word limit); only minor loss for not explicitly mentioning the solid-state concept, though the explanation remains clear for a 12-year-old.
meta-llama/llama-4-scout
100 in · 69 out · 60 words · checks 6/6
We're working on a new kind of battery that's safer and works better. It uses a special solid material instead of a liquid one, which makes it more stable and able to store more energy. This means it can power things for 40% longer, and it's less likely to catch on fire, making it a big improvement over old batteries.
Judge: Excellent rewrite: simple vocabulary, includes 40% range gain and safety benefit, 59 words (under 70), avoids all banned words, and is age-appropriate for a 12-year-old.
Rewrite: Simple vocabulary, keeps the 40% range gain and the safety point, under 70 words, banned words absent. The deterministic checks are max_words, contains, contains, not_contains, not_contains, not_contains.
If the judge's bar of 8/10 is good enough for you, Llama 4 Scout at $0.03 per 1,000 runs. If you need the top score, Llama 4 Scout at $0.03 per 1,000 runs.
Run it yourself
Re-run this prompt on Meta with your own OpenRouter key, or tweak the wording and see what changes.
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