Rewrite · 6 checks · max 400 tokens · benched 2026-09-16

MiniMax M3 vs MiniMax M2.7 vs MiniMax M2.5 on jargon to plain english for a 12-year-old

Minimax models side by side on "Jargon to plain English for a 12-year-old": MiniMax M2.5 scores 9/10; MiniMax M2.5 is the cheapest answer scoring 8+ at $0.40 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.

MiniMax M3

minimax/minimax-m3

9/10

Latency: 2.2s
Cost: $0.00068
Per 1,000: $0.68

266 in · 549 out (447 reasoning) · 48 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

Our new battery design uses a solid material instead of liquid to move energy around. This lets it store more power without overheating, so cars can go 40% farther on one charge. It's also much safer because it is far less likely to catch fire than older batteries.

Judge: Excellent rewrite: simple vocabulary, includes 40% range gain and safety benefits, avoids all banned words, and is 58 words (well under 70-word limit); only minor issue is 'move energy around' is slightly imprecise phrasing.

MiniMax M2.7

minimax/minimax-m2.7

9/10

Latency: 3.9s
Cost: $0.00083
Per 1,000: $0.83

131 in · 658 out (613 reasoning) · 37 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

Our new battery design uses a solid electrolyte, which stores more energy and stays cool, giving electric cars about 40% more driving distance and making them much less likely to catch fire compared to older lithium‑ion batteries.

Judge: Excellent rewrite: simple vocabulary, includes 40% range gain and safety benefit, 28 words (well under 70), avoids all banned words, and is age-appropriate for a 12-year-old.

MiniMax M2.5

minimax/minimax-m2.5

9/10

top judge scorecheapest scoring 8+

Latency: 1.5s
Cost: $0.00040
Per 1,000: $0.40

131 in · 338 out (290 reasoning) · 42 words · checks 6/6

max_words
contains
contains
not_contains
not_contains
not_contains

Our new battery uses a solid material instead of liquid to work better. This helps it store more energy and stay cooler. It can go 40% farther on one charge and is much safer because it won't catch fire like older batteries.

Judge: Excellent simplification for a 12-year-old, includes the 40% range gain and safety benefit, stays well under 70 words (42 words), avoids all banned words, and uses clear vocabulary.

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, MiniMax M2.5 at $0.40 per 1,000 runs. If you need the top score, MiniMax M2.5 at $0.40 per 1,000 runs.

Same prompt, other families

Run it yourself

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

Side by side

MiniMax M3

MiniMax M2.7

MiniMax M2.5

Frequently asked

Same prompt, other families

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