Notion Custom Agents Goes $10/1000 Credit on 5/4 — A Free Way to Run All 6 Departments
What's Changing
On 2026-05-04, Notion Custom Agents (Business/Enterprise add-on) switches to $10 per 1,000 credits (usage-based).
Until 2026-05-03 the feature was open to all Business/Enterprise customers as a free trial.
Sources:
Each AI run consumes a handful to a few dozen credits, so 1,000 credits is roughly 30–100 executions.
Two-source triangulation (Notion's own 45–90 runs/1,000 credits + independent estimates of 30–60) lands a conservative $0.11–$0.33 per agent run.
That means "10 agent runs a day on Notion" = $33–$99 / month. Jibun Inc. = $0 (fully free).
And credits reset monthly — unused ones evaporate. It's not a fixed cost you can amortize; it's a recurring usage-pressure tax on your attention.
The heavier your personal use was, the sooner you'll enter "credit-balance watch mode" once billing kicks in.
Credit-Balance Watching = Time Capital Leak
At Jibun Inc. (自分株式会社), one founding principle is "capital = time."
Every time you pause to check "How many credits do I have left?" you're spending time capital.
When the balance drops near a billing threshold, you start hesitating: "Should I run it again, or save?"
5 seconds × 20 times a day = 100 sec/day ≈ 10 hours/year spent on pure balance-checking.
This isn't a rebuttal of Notion. Custom Agents has unmatched strengths for enterprise-data RAG integration.
But for a personal user logging daily life, predictable free preserves time capital better than predictable price-per-token.
The Silent-Pause Trap Makes It Worse
According to Notion's official help, when a live Custom Agent runs out of credits, it pauses at the next monthly service date. In practice:
- You don't notice the credit exhaustion → next month, your AI automation stops silently (notification may not arrive)
- From the user side: "Wait, my agent isn't running?" — by the time you notice, data is already missing
- Contrast: Jibun Inc. has no billing concept at all, so "credit-balance watch" doesn't exist and silent pauses can't happen
Source: https://www.notion.com/help/custom-agent-pricing
For context, Evernote is doing the same thing in 2026 Q1 — retiring Personal/Professional and reshaping into Starter $8.25 / Advanced $14.17 / Teams $24.99 (plus a 50-note Free tier).
"Spring 2026 in the notes/AI industry = a coordinated shrinkage of individual free tiers."
Securing a "predictable free" option now is a rational hedge for individual users caught in that shift.
The 6-Department Integration Model
Jibun Inc. is a personal tool that maps a "1-person company" onto Flutter Web + Supabase.
It integrates these 6 departments — all free:
| Department | Scope |
|---|---|
| R&D | Learning log / AI University (133 providers) |
| Finance | Household KPIs / expense categories |
| Marketing | Personal publishing / SNS history / reactions |
| HR | Health log / sleep / exercise / mood |
| HQ | Mission / 9 principles / decision log |
| Health | Physical condition / prevention / medical notes |
Notion Custom Agents broadly covers "notes / wiki / tasks / calendar" — roughly HQ + R&D + Marketing.
But HR + Health (personal wellbeing) and Finance (household budget) aren't Notion's home turf.
That's the natural split: "Notion = work-centered" vs "Jibun Inc. = whole-life."
The Tech Stack Behind "Predictable Free"
- Flutter Web (Dart): One codebase on iPhone Safari / Android Chrome / desktop browsers
- Supabase: PostgreSQL + Edge Functions (Deno) + Auth + Storage — generous free tier
- 16 Edge Function hubs: core / growth / ai / admin / app / schedule / tools / media / enterprise / social-commerce / lifestyle + 5 standalone
- AI routing: ai-hub aggregates 130+ providers to stitch together free tiers
- Firebase Hosting: Static hosting on the free tier
"Free" here doesn't mean a shady hobby server — Supabase / Firebase / Flutter / dev.to / Qiita are all open and SLA-backed. What matters is the predictability of not watching a credit meter.
4 Axes of Comparison
| Axis | Notion Custom Agents | Jibun Inc. |
|---|---|---|
| Price | $10 / 1,000 credits (usage-based) | Free |
| Scope | Notes / wiki / tasks / calendar | 6 departments (R&D / Finance / Marketing / HR / HQ / Health) |
| Japanese UX | English-first + translation | Japanese-native |
| Data persistence | Notion cloud (paid-tier dependent) | Supabase (your own PostgreSQL) |
A Coexistence Pattern
The argument isn't "replace Notion." Splitting the job plays to each side's strength:
- Notion = work notes / wiki / enterprise data integration
- Jibun Inc. = health / household / daily KPI (= yesterday-you comparison)
Save your work credits; run the 6 personal departments for free. That's how time capital survives the paywall.
Try It
- Live: https://my-web-app-b67f4.web.app/
- Landing: https://my-web-app-b67f4.web.app/
- 21-competitor comparison: https://my-web-app-b67f4.web.app/comparison
Notion Custom Agents flips to metered pricing on May 4. Knowing there's a "distribute personal 6 departments to a free tool" option beforehand helps you sidestep "credit-balance-watch syndrome" when the switch flips.
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