Rewrite · 6 checks · max 400 tokens · benched 2026-11-05

Muse Spark 1.3 vs Muse Glimmer 30B vs Llama 4 Maverick vs Llama 4 Scout on jargon to plain english for a 12-year-old

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.

The prompt every model received

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.

Side by side

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.

Muse Spark 1.3

meta/muse-spark-1.3

9/10

Latency: 656ms
Cost: $0.00152
Per 1,000: $1.52

97 in · 329 out (270 reasoning) · 43 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

Our new battery uses a solid material inside instead of liquid. It can store more power and stays cooler. That means electric cars can drive 40% farther on one charge, and the battery is much less likely to catch fire than older batteries.

Judge: Excellent simplification for a 12-year-old, includes the 40% range gain and safety benefit, stays under 70 words (47 words), avoids all banned words, and uses clear vocabulary.

Muse Glimmer 30B

meta/muse-glimmer-30b

9/10

Latency: 347ms
Cost: $0.00031
Per 1,000: $0.31

147 in · 255 out (203 reasoning) · 39 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

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.

Llama 4 Maverick

meta-llama/llama-4-maverick

9/10

Latency: 398ms
Cost: $5.4e-5
Per 1,000: $0.05

100 in · 49 out · 42 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

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.

Llama 4 Scout

meta-llama/llama-4-scout

9/10

top judge scorecheapest scoring 8+

Latency: 201ms
Cost: $3.1e-5
Per 1,000: $0.03

100 in · 69 out · 60 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

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.

Frequently asked

What does this prompt test?

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.

Which model should I pick for this task?

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.

Same prompt, other families

Run it yourself

Re-run this prompt on Meta with your own OpenRouter key, or tweak the wording and see what changes.

Partner picks

Claude (credits)Replit Make Taskade Fireflies.ai Pressmaster.ai Murf AI

Affiliate/referral links: commissions or credits

Side by side

Muse Spark 1.3

Muse Glimmer 30B

Llama 4 Maverick

Llama 4 Scout

Frequently asked

Same prompt, other families

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