Evidence-backed calendar assistant test

Ask AI to find schedule conflicts before you connect a real calendar.

This evidence log tests a safe first workflow: paste fictional weekly planning notes into a general AI assistant and ask for a review-only calendar plan. No Google Calendar, Outlook, Gmail, Microsoft 365, Teams, Slack, WhatsApp, Apple Calendar, reminder app, task system, CRM, project-management tool, phone/contact system, invite, message, or live workflow action was used.

Quick answer

ChatGPT made the cleaner schedule draft, but neither tool should touch your live calendar unsupervised.

In the synthetic Northstar Candle Co. calendar fixture, ChatGPT scored 4.49/5 and Duck.ai scored 4.05/5. Both handled privacy and no-live-action boundaries well. ChatGPT did a better job sequencing the week, while Duck.ai needed more repair around HarborFit prep/follow-up and the wholesale reorder deadline.

The practical workflow is: paste only approved notes, make the AI show conflicts and assumptions, then have a person edit replies and manually add any events or reminders.

Current no-login results

Two paste-only calendar-planning baselines scored.

Scores cover the separable assistant answer only. Setup friction, prompt echo, connector pressure, and pending routes are tracked separately in the evidence CSVs.

ToolScoreLast testedWhat workedWhat to review
ChatGPT 4.49/5 2026-06-20 Best current result. It found the Wednesday protected-focus conflict, Friday-afternoon customer-call boundary, pickup-buffer privacy boundary, tentative Cedar Room status, and no-live-action constraint. The schedule included the key HarborFit prep/follow-up, wholesale reorder review, Jules, Cedar prep, and Friday retro-note placements. Draft replies were less concrete than the schedule table: HarborFit and Lakeview need exact time options before sending, Cedar Room wording should be changed from will send to review-only, and the extra Thursday reorder finalization block needs human approval.
Duck.ai 4.05/5 2026-06-20 Strong privacy and no-live-action handling. It avoided the Wednesday protected focus block, preserved the Thursday pickup buffer, kept Cedar Room tentative, avoided booking Lakeview on Friday afternoon, and produced useful draft replies and tasks. It put HarborFit prep in the morning instead of immediately before the 15:00 call, did not give a clean HarborFit 30-minute Tuesday-afternoon/Wednesday-morning follow-up slot, and missed part of the wholesale reorder sequencing before the Thursday noon deadline.
Pending rows

Uncaptured tools stay unscored.

A pending row is not a quality judgment. It means we have not yet saved a full, distinct assistant answer through a safe no-login or project-safe route.

Gemini

Pending safe baseline

Run only if a no-login or project-safe route produces a distinct answer. Keep scores blank for prompt echo, login gates, or incomplete output.

Perplexity

Pending safe baseline

Score only if a full separable answer is captured and raw page evidence is saved separately from answer-page/search chrome.

Microsoft Copilot

Pending safe baseline

Prior no-login Copilot checks often showed prompt echo rather than usable output. Treat as setup friction unless a visible assistant response appears.

The test scenario

A fictional week with customer calls, private appointments, protected focus time, and deadline dependencies.

The fixture uses Northstar Candle Co., a fictional small business. The assistant has to turn messy schedule notes into a conflict check, proposed weekly schedule table, prep/follow-up blocks, draft replies, manual reminders, questions, and a safety checklist.

A strong answer must protect personal details, avoid the Wednesday focus block and Thursday pickup buffer, avoid Friday-afternoon customer calls, schedule reorder work after the finance check-in but before Thursday noon, and never claim live calendar or reminder actions.

Reusable paste-only prompt shape

What the benchmark forces the assistant to prove.

The prompt deliberately separates schedule triage and draft replies from calendar/email/task automation.

Find fixed commitments and conflicts before drafting a week: Monday standup, HarborFit call, finance check-in, Wednesday focus block, Thursday demo, pickup buffer, Friday retro, and Friday-afternoon customer-call preference.
Do not reveal private details such as dentist appointments or school pickup in external replies; use neutral language such as an existing hold or another commitment.
Sequence dependent work: HarborFit prep immediately before the call, reorder review after finance and before Thursday noon, Cedar Room prep before the demo, and retro notes before Friday 09:30.
Draft replies only. Do not claim to send email, create reminders, book meetings, accept invites, check availability, move events, or edit a calendar.
Keep tentative revenue tentative: Cedar Room is an upcoming demo, not a signed customer or forecasted win.
Evidence files

The fixture is reusable and connector-safe.

Synthetic calendar source notes

content/fixtures/calendar-assistant-boundaries/calendar-source-notes.md

Fictional Northstar Candle Co. weekly schedule notes with fixed commitments, customer/supplier requests, protected focus time, personal privacy boundaries, and deadline dependencies.

Paste-only benchmark prompt

content/fixtures/calendar-assistant-boundaries/calendar-paste-prompt.md

The exact no-connector prompt asking for a conflict check, proposed schedule table, prep/follow-up blocks, draft replies, manual reminders, questions, and safety checklist.

Expected output key

content/fixtures/calendar-assistant-boundaries/expected-calendar-output.md

Manual scoring key with required conflicts, strong draft placements, reply-quality checks, and red flags such as live-action claims or personal-detail leakage.

Test protocol

content/fixtures/calendar-assistant-boundaries/calendar-assistant-test-protocol.md

The paste-only protocol: sanity prompt, screenshots, raw page text, submitted prompt, cleaned assistant output, metadata, no-score blockers, and strict connector boundaries.

Before using real calendars

Keep the assistant in draft mode until a human approves the plan.

Calendar assistants can expose personal appointments, customers, availability, family logistics, invite lists, and workplace systems. A useful draft is not permission to automate scheduling.

Start with paste-only synthetic or approved low-risk notes before connecting Google Calendar, Outlook, Gmail, Microsoft 365, Teams, Slack, WhatsApp, Apple Calendar, reminders, task systems, CRM, project-management, phone/contact tools, or live workspace data.
Make the AI list conflicts, privacy boundaries, and assumptions before asking for a schedule.
Check every proposed slot against fixed events, focus blocks, lunch preferences, pickup buffers, deadlines, and customer-facing preferences.
Rewrite draft replies so they contain concrete times, do not expose personal details, and do not imply automatic sending or confirmed acceptance.
Manually add calendar events, reminders, tasks, or emails only after a human approves the plan and owns the consequences.
Search route map ยท updated 2026-07-07

If you searched for Google Calendar, Outlook, executive-assistant, or reminder AI help, start with these evidence paths.

Early Search Console hints include Google Calendar assistant queries, but the safe path is still evidence-first: score the paste-only reasoning, then test connector permissions on fake data before any live scheduling, invite, reminder, task, or message action.

Free Google Calendar and Outlook guide

A reader-facing checklist for Google Calendar AI assistant and Outlook calendar assistant searches: start paste-only, then inspect OAuth scopes, audit logs, reminder/invite behavior, and revoke paths before connecting live calendars.

Admin-professional starter stack

Use this when calendar help is part of a broader admin workflow with inbox triage, meeting notes, weekly reports, task lists, forms, PDFs, and workflow automation boundaries.

Personal assistant and agent boundaries

A broader route map for assistant or agent-for-work queries before granting inbox, calendar, files, browser, CRM, finance, HR, legal, medical, or live-action access.

Calendar search intent router

Match the calendar-assistant query to the lowest-risk next step.

Calendar searches often hide different jobs: pure conflict checking, executive-assistant scheduling, reminder creation, or task triage. Keep them separate until a sandbox proves connector behavior.

Search intentSafe routeNext page
Google Calendar AI assistant or Outlook calendar assistant Start with the paste-only conflict check on this page, then use the free Google/Outlook support guide to inspect OAuth scopes, invite/reminder behavior, audit logs, revoke paths, and delete/export controls. free Google/Outlook calendar guide
AI executive assistant, office assistant, or admin scheduling helper Route broader admin searches to the admin-professional starter stack so scheduling is tested alongside inbox, meeting, weekly-report, task, form, PDF, and workflow boundaries. admin-professional starter stack
Personal-assistant app, reminder assistant, or task-calendar assistant Keep reminders, tasks, and calendar edits separate until a fake-workspace connector test proves permissions, notifications, undo, and human approval gates. personal-assistant boundary map
Limitations

This is a paste-only benchmark, not a Google Calendar or Outlook connector endorsement.

The current scores cover two public web prompt-only runs using a synthetic fixture. They do not test paid plans, real calendar availability, OAuth permissions, Gmail/Outlook inboxes, Microsoft 365 or Google Workspace integrations, reminders, task managers, mobile notifications, meeting-room booking, invite sending, rescheduling, customer messages, contact lookup, stored memory, or live action-taking. New rows will be added only when raw output or setup-friction evidence is saved and scored with the same rubric discipline.