Compare: one task, two briefs
Write two versions of a brief on the same synthetic material, run both, see how wording changes the output, and judge which one holds up.
1. Scenario
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Year 5 museum trip update for parents
Education · Synthetic materialYou teach Year 5 and need to write a short Friday note to parents and carers about a timetable change for next Thursday's local museum visit.
Synthetic trip memo, Year 5 local history visit (Thursday 12 November): - Coach departure moved from 09:15 to 08:50 so the class can enter the textile gallery before it closes for roof work at 11:30. - Children need to arrive at the classroom by 08:35 for registration. - Packed lunches are still needed; no glass bottles or nuts. - Return time to school gate is unchanged at 15:15. - No extra cost to families; the school travel fund covers the earlier coach booking.
2. Work area
Edit the briefs or setup below before you run.
Output A
Example. No model ran.Dear Year 5 families, We are thrilled that next Thursday 12 November our class will step back in time at the local history museum to explore our textile heritage. It promises to be a memorable day of discovery for all our young historians. Because the textile gallery is having roof work at 11:30, our coach will now leave at 08:50 instead of 09:15, so please have children in class by 08:35. Please send a nut-free packed lunch with no glass bottles. We will be back at 15:15 and there is no extra charge.
Output B
Example. No model ran.Hello Year 5 parents and carers, Here is a quick time change for our museum visit on Thursday 12 November: - Earlier start: Please bring children to the classroom by 08:35 for registration. The coach now leaves at 08:50 (instead of 09:15) so we can visit the textile gallery before 11:30 roof work. - Lunch: Please send a packed lunch with no nuts and no glass bottles. - Pick-up: We return to the school gate at the usual time of 15:15. - Cost: There is no extra cost to families; the school travel fund covers the earlier coach. Thank you for helping us get off on time.
3. Run
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Sends the scenario material and the two briefs you run. to job sandbox_run (claude-haiku-5-5, effort low). Raw text is processed in memory and not stored.
4. Inspect
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Your draft briefs and scenario selection on this device.
sandbox_run · claude-haiku-5-5 (effort low, max 1500 tokens). Fast Haiku runs keep side-by-side brief comparisons under a few seconds so you can test small wording changes.
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5. Judge
Which brief produced a note where a busy parent reading on a phone will spot the 08:35 arrival time in the first five seconds?
Kept the facts
Matched the tone
Stayed within what it knew
Usable without heavy edits
50 is a coin flip. 99 is certain. Honest confidence scores best.
6. Debrief and Keep
What to check next time, the matching lesson, and keeping this setup as a recipe.
What to check next time
When a logistical detail changes, burying it below a paragraph of enthusiasm means families turn up at the old time. Putting the changed time in the first bullet and setting a word ceiling respects how parents read school messages.
Keep as a recipe
Save the stronger brief and scenario setup to your device so you can reuse or adapt it in Keep.