Quick Verdict
ChatGPT Plus ($20/mo) is the right choice if you want a powerful conversational AI for writing, research, and exploration — and you're willing to do the follow-through yourself.
Deputy (pay-as-you-go) is the right choice if you want an AI that handles your calendar, email, follow-ups, and recurring tasks autonomously — without you opening an app to ask.
They're not the same category of product. This page explains why.
What ChatGPT actually is
ChatGPT is a conversational AI. You open it, type something, and it responds. It's available 24/7 and it's genuinely useful for writing drafts, working through ideas, summarizing documents, and answering questions with more nuance than a search engine.
ChatGPT Plus ($20/month) adds GPT-4o, DALL-E image generation, voice mode, and some memory of prior conversations. It's a capable, well-designed product that has genuinely changed how a lot of people work.
The honest limitation: ChatGPT waits for you. Every interaction starts with you opening the app, typing a prompt, and reading a response. You still have to act on what it gives you. It generates the email — you send it. It drafts the follow-up — you decide when and whether to send it. It's a force multiplier for your thinking, but the execution is still on you.
Conversational AI is a system that generates responses to user prompts — text, code, images, analysis — in a back-and-forth dialogue format. It produces outputs that the user then acts on. ChatGPT, Claude, and Gemini are conversational AI. The model waits; the human executes.
What Deputy actually is
Deputy is an agentic AI assistant — meaning it takes action, not just generates content. It lives in your text messages. You tell it what you need — "follow up with anyone who hasn't responded to my proposal by Thursday," "send me a briefing every morning at 8am," "book a call with Marcus next week" — and it handles those things without you coming back to check on it.
The key word is proactive. Deputy doesn't wait for you to open an app. It monitors, executes, and reports back. A lead goes cold — Deputy sends the follow-up. A meeting reminder is due — Deputy texts you before you've forgotten. A recurring task needs handling — Deputy does it while you're asleep.
Pricing is pay-as-you-go on ATXP infrastructure — you pay only when Deputy does work for you, which costs pennies per task. Free to sign up, no monthly minimum, no subscription.
The head-to-head comparison
This table compares them on the dimensions that matter for most people choosing between a conversational AI and an action-taking assistant.
| ChatGPT Plus | Deputy | |
|---|---|---|
| Price | $20/month flat | Pay-as-you-go · $0 when idle · free to start |
| Interface | Browser / app — you open it | Text message — it contacts you |
| How it works | You prompt → it responds | You set a task → it executes autonomously |
| Takes action | No — generates content you act on | Yes — sends emails, books calendar, follows up |
| Works proactively | No — waits for your prompt | Yes — monitors and acts without being asked |
| 24/7 operation | Available, but inactive | Active — runs tasks while you sleep |
| Memory | Some within Plus; resets across sessions | Persistent — knows your contacts, preferences, recurring tasks |
| Best for | Writing, research, brainstorming, coding | Follow-ups, scheduling, reminders, recurring tasks |
| Setup required | Sign up, start chatting | Sign up, give Deputy a task — it starts immediately |
When ChatGPT is the better choice
ChatGPT Plus is genuinely the right tool when your primary use case is interactive and exploratory. If you're:
- →Writing long-form content where you want to iterate and refine with AI in the loop
- →Debugging or writing code where back-and-forth dialogue is the workflow
- →Doing deep research where you want to ask follow-up questions in real time
- →Using GPT-4o's voice mode or image generation regularly
ChatGPT is excellent at all of these. If your workflow lives in that interactive space, the $20/month is justified and Deputy isn't a replacement.
When Deputy is the better choice
Deputy is the better choice when your problem isn't getting AI-generated content — it's getting things done. According to Invesp, 80% of sales require 5 or more follow-ups to close, but 44% of salespeople give up after just one. That's not a knowledge problem — ChatGPT can tell you exactly what to write. It's an execution problem.
Deputy is built for the execution gap. If you're:
- →Losing leads because follow-ups fall through the cracks
- →Spending time on scheduling back-and-forth that an assistant should handle
- →Paying $20–100/month for AI tools and still doing everything yourself
- →Wanting a morning briefing, recurring reminders, or proactive updates without setting up automation tools
- →Looking for an AI that works while you're not at your desk
"We care a lot more about the last mile and 'making things actually work' than the glitzy demos."
Louis Amira
Founder & CEO, Deputy / Circuit & Chisel
See what Deputy does that ChatGPT doesn't
Free to start. $0 when idle. No subscription.
Try Deputy FreeThe question most people don't ask
Most people frame this as a quality question: which AI is smarter? That's the wrong frame. ChatGPT and Deputy both have access to capable models. The difference isn't intelligence — it's architecture.
ChatGPT is designed to respond to you. Its whole architecture is built around the prompt-response loop. Deputy is designed to act for you. Its architecture is built around triggers, tasks, and autonomous execution.
The question to ask isn't "which is better?" It's "what do I actually need?" If you need an AI that helps you think, ChatGPT is excellent. If you need an AI that handles things so you don't have to think about them, that's what Deputy is built for.
A 2025 Productiv report found the average knowledge worker now maintains 3.2 AI subscriptions. Most people end up with one AI to help them write, one to help them search, and still no one handling the execution. Deputy is designed to close that gap — not add another subscription to the pile.
| If you need… | Use this |
|---|---|
| Help writing, editing, or brainstorming | ChatGPT Plus |
| Coding assistance or debugging | ChatGPT Plus |
| Follow-ups on leads and proposals | Deputy |
| Calendar management and scheduling | Deputy |
| Daily briefings and proactive reminders | Deputy |
| Recurring tasks that need to happen automatically | Deputy |
| AI that works while you're not at your desk | Deputy |
| Replacing $60–100/month in AI subscriptions | Deputy |
Frequently asked questions
What is the difference between Deputy and ChatGPT?
ChatGPT is a conversational AI — you ask it questions and it generates responses. You still have to act on those responses yourself. Deputy is an agentic AI assistant that takes action on your behalf: scheduling calendar events, sending emails, following up on leads, running recurring tasks — without you initiating each step. ChatGPT is a tool. Deputy is an assistant.
Is Deputy cheaper than ChatGPT Plus?
For most users, yes. ChatGPT Plus costs $20/month regardless of how much you use it. Deputy is pay-as-you-go — you pay only when Deputy does work for you. Most users spend a few dollars a month. Free to sign up with no monthly minimum.
Can Deputy replace ChatGPT?
For task execution, scheduling, follow-ups, and recurring work: yes. For open-ended creative writing, coding, or long interactive research sessions: ChatGPT is better suited. Most people who switch to Deputy find they no longer need ChatGPT Plus for their daily assistant tasks — the subscription becomes hard to justify.
How does Deputy work compared to ChatGPT?
ChatGPT works via a browser or app — you open it, type a prompt, and read the response. You initiate every interaction. Deputy works via text message — it contacts you proactively, completes tasks in the background, and sends you updates. You don't need to open anything. One waits for you. The other works for you.
Does Deputy use ChatGPT?
Deputy is built on ATXP infrastructure — an independent AI agent identity and payments platform developed by Circuit & Chisel. It uses frontier AI models to complete tasks but operates independently of OpenAI's products.