Duckbill vs Instinct: which AI assistant to text
The two most opposite products here. Instinct is a model acting autonomously; Duckbill is a model that plans and a background-checked human who executes.
Duckbill is for
Anyone who wants the last mile done by someone accountable.
Instinct is for
Anyone who wants throughput and will supervise the output.
The model plans, background-checked humans execute
- Posted doing a job
- 0
- public posts, each on the listing
- Of those, went wrong
- 0
- nothing posted yet
- Posts for it, against it
- 0 / 0
- nothing posted yet
A general agent that acts before asking, and is criticised for exactly that
- Posted doing a job
- 23
- public posts, each on the listing
- Of those, went wrong
- 4
- fewer is better; people post successes
- Posts for it, against it
- 5 / 10
- of 17 public posts about it; the rest mixed or neither
Duckbill and Instinct, side by side
They differ on getting in, price, trust and who runs it; a dot marks each row where they do.
| Duckbill | Instinct | |
|---|---|---|
| Getting in | ||
| Where do you text it? | SMS, Email, Web. | iMessage, Voice. |
| How do you start? | Create an account. | Invite only. |
| Does it work on Android? | Yes, over SMS, Email, Web. | No; iMessage only. |
| Is there an app to install? | Not recorded: we have not established this. | Optional app: an app exists but is not how you start. |
| Who starts the conversation? | Only when asked. | Acts without asking. |
| Price | ||
| What does it cost? | From $40 a month. | Not published. |
| Trust | ||
| Does it train on my messages? | Not stated. | Yes, with opt-out. |
| What does it hold to log in for me? | Holds what it does not say; no security contact published. | Holds your password for connected accounts; no security contact published. |
| What happens to my messages? | Who carries them is not published. | Who carries them is not published. |
| Does it publish about its security? | Nothing published. | Nothing published. |
| Can it phone people? | Yes; a person, or the agent from a second number. | It calls; who speaks is not stated. |
| Who runs it | ||
| Who is behind it? | Duckbill, a Delaware corporation, Boston; funded. | Spear Street Technology, Inc., San Francisco; funded. |
| How is it funded? | $33M across a seed and a Series A, announced September 2023. | $1.35B total. A $1B Series C at a $10B valuation from investors including Sequoia Capital, Benchmark and Coatue, confirmed by the company on 28 September 2026, a month after $350M at a $2.5B valuation that included a $250M Series B co-led by Index Ventures and Benchmark. Still in private beta. |
| What it can do, on its own pages | ||
| Handoff to a human | Yes | Not stated |
| Not stated | Yes | |
| Calendar and scheduling | Not stated | Yes |
| Travel | Not stated | Yes |
| Payments | Not stated | Yes |
| Documents | Not stated | Yes |
| Persistent memory | Not stated | Yes |
| Talks to other people's agents | Not stated | Yes |
| Both | Bookings and reservations, Web research, Task management, Phone calls, Calls people for you. | |
What people got Duckbill and Instinct to do
23 public posts of either agent doing a specific thing for somebody, counted by the job; each is on the listing with the post behind it.
| Job | Duckbill | Instinct |
|---|---|---|
| Something you are owed | 0 | 8 |
| Research | 0 | 6 |
| Booking | 0 | 4 |
| Reminders and follow-up | 0 | 2 |
| Group coordination | 0 | 1 |
| Your inbox | 0 | 1 |
| Buying | 0 | 1 |
Instinct
What people say Duckbill and Instinct saved or got back
Every dollar figure somebody attached to a post about either agent. The figures are theirs, unverified, and never added up here.
Duckbill
Instinct
- $2,182got backunclaimed property owed to him, claims filedInstinct
- $245.46got backa Blue Cross Blue Shield settlement paid as a virtual Visa, issued in May and never activatedInstinct
- $120saveda year off a Verizon bill, plus $58 backInstinct
- $54saveda Groupon for a dental checkup, in a backlog of admin clearedInstinct
What separates Duckbill and Instinct
Duckbill's line is "AI breaks it down. Humans pick it up." The model decomposes the task and people carry it out, over text, email or the app: refunds, disputes, cancellations, hold queues, appointments, negotiations. Instinct connects to your apps and accounts and does the work itself, over text and calls.
This is the live test of a failure class. Magic, Fin, GoButler and Facebook M all attempted the human-concierge model and abandoned it on unit economics. Duckbill is the one product here running it again with cheaper planning underneath, which makes it economically the most interesting listing in the directory regardless of whether it works.
Instinct is the opposite bet and currently the better funded one, at $1.35 billion raised. Its published weakness is that it acts before asking, which is precisely the failure a human executor cannot make in the same way. Duckbill's privacy policy was last updated on 4 December 2024 and does not address whether conversations train models; Instinct's, public since 26 August 2026, says they do unless you opt out.
What people say about Duckbill and Instinct
Duckbill
Instinct
“Unlike ChatGPT, Claude, or Meta, Instinct doesn't send its own user agent or signature.”
“Out of the 456 people who asked for Instinct, only 31 posted about using it in the days that followed.”
“We're still deep in unlocking personal superpowers via AI, long phase of tool before network”
The same products, against others
See every agent compared or answer five questions to narrow it yourself.