Pricing
Five dollars. Fifty thousand words.
No subscription and no monthly bill. You put money on a balance and each run spends from it. When the balance runs low you add more, or you go back to the free tier and keep the runs you get every day.
- $5 is the base amount, and it lands 50,000 words on your balance.
- Checkout shows a quantity stepper from 1 to 20. Set it to 4 and you pay $20 for 200,000 words; set it to 20 and you pay $100 for a million.
- The rate is flat at every step: one cent buys 100 words, whether you spend $5 or $100.
A word here is a word of your draft. A 500-word run spends 500 words off the balance, so $5 covers about a hundred short runs.
Opens Stripe Checkout. Set the quantity there for a bigger balance. Card only, and you land on your dashboard when it clears.
What paid unlocks
2,000-word runs
Paste up to 2,000 words at a time instead of the 500 the free tier stops at.
.md upload
Drop a Markdown or text file straight in, so you are not pasting long drafts by hand.
No daily cap
The free tier gives you 5 runs a day. On the balance you run as much as it covers, whenever you want.
API and MCP key
Your dashboard link doubles as the bearer token for POST /api/deslop and the /mcp server. One credential for the browser and your agents.
How the no-login account works
- You never make a password. When you pay, we mint a link like /d/ followed by a long random token, and that link is the account.
- Bookmark it. The one reliable way back to your balance is the link itself, so save it the moment Checkout drops you there.
- Email it to yourself. The dashboard has a one-field form that sends the link to any address, which is the backup for when a bookmark gets lost.
- Regenerate it if it leaks. One button mints a fresh link and kills the old one on the spot, so a link you pasted somewhere by mistake stops working.
Here is the trade we are making, in plain terms. The link is the whole credential: anyone who holds it can spend the balance and read the usage table, because there is no email or password to check them against. That is the cost of a no-login account, and it is why the page is set to stay out of search engines and out of the referrer header. If a link gets away from you, regenerate it and the old one dies at once. Your draft text is never kept on either tier unless you tick the donate box after a run, in which case that one pair is held 90 days and then deleted; otherwise the account stores only word counts and timestamps.
Topping up again
When the balance gets low, the dashboard has a Top up button that opens the same Checkout with the same quantity slider.
A top-up adds to what is left. Nothing expires and nothing resets, so a balance you barely touched this month is still there next month.
Questions
Is this a subscription?
No. You pay once for a balance and spend it down. There is no recurring charge and no card kept on file by us.
What happens when the balance hits zero?
Paid runs stop and the tool falls back to the free tier: 500 words a run, 5 runs a day. Add more to the balance whenever you want the higher limits back.
Do I need the paid tier to use underslop?
No. The free tier runs every voice and marks every tell. You pay only for longer runs, file upload, no daily cap, and the API and MCP key.
I lost my dashboard link. Can you find my account?
Only if you emailed the link to yourself from the dashboard: check that inbox. Since there is no login tied to your identity, a link with no copy saved anywhere cannot be recovered, so save it when you get it.