Do AI reply tools need an OpenAI key? 7 tools in 2026
Usually no. Of 7 reply tools, only InstantDM's AI agent and an n8n workflow need your own key. BetterSocials includes AI from $29 a month for 4 accounts.
By The Shipping Log staff7 min readUpdated Nov 8, 2026
Usually no. Of the seven reply tools we logged, two ask for a model key of your own: InstantDM's AI agent and an n8n workflow you build yourself. BetterSocials is the pick for creators and local businesses that want AI replies to comments and DMs inside the price, at $29 a month for four accounts with 1,000 AI credits.
ManyChat offers its AI from the Pro plan up and charges extra for it. InstantDM suits a builder who already pays OpenAI and wants to choose the model.
The billing rules behind AI replies, as of October 2026
A reply tool can handle the AI that writes your replies in three ways, and InstantDM, CreatorFlow and BetterSocials each show one of them.
An API key is the code a tool uses to charge a model provider, such as OpenAI, for each reply it writes. Whoever owns the key gets the bill.
- Included. The tool pays the model provider and gives you a monthly allowance. BetterSocials calls its allowance AI credits.
- Your own key. You paste a key from your own OpenAI, Claude, Gemini or DeepSeek account, and that provider bills you per use. InstantDM's AI agent node works this way.
- No AI at all. Replies are templates you write once. CreatorFlow and LinkDM work this way, so there's no AI to pay for.
Seven reply tools and who pays for the model
Only InstantDM and the n8n route ask for a key. Prices below are as listed in October 2026 for BetterSocials, ManyChat and InstantDM, and in September 2026 for CreatorFlow and LinkDM.
| Tool | Who runs AI | Key needed | Entry price |
|---|---|---|---|
| BetterSocials | The tool, 1,000 credits on Creator | None | $29 a month, 4 accounts |
| ManyChat | The tool, on Pro and up | None | $39 a month on Pro |
| InstantDM | Your model account, in its agent | OpenAI, Claude, Gemini or DeepSeek | $9.99 a month, billed yearly |
| n8n workflow | Your OpenAI account | OpenAI | n8n plus OpenAI usage |
| Instagram AI Auto Replies | Meta, inside the Instagram app | None | Built into Instagram |
| CreatorFlow | No AI, template replies | None | $15 a month, or $12 yearly |
| LinkDM | No AI, template replies | None | $19 on Pro, 3 accounts |
InstantDM has the lowest paid entry price in the table, and its pricing page offers an "AI agent node with your own OpenAI, Claude, Gemini or DeepSeek key" and promises "No per-conversation metering." InstantDM doesn't meter the conversations.
Your model provider still bills you for each reply.
On n8n, the route is a template called Automate Instagram comment replies with OpenAI and Redis tracking. You supply the OpenAI key, run the workflow and fix it when it breaks.
Instagram AI Auto Replies is Meta's own feature, and its help page says it "is being gradually introduced and may not be available to you yet." It also needs a creator AI you've built with Meta AI Studio.
CreatorFlow sends template replies, and LinkDM sends keyword and template replies, both with no AI replies. CreatorFlow covers Instagram only. LinkDM covers Instagram and Facebook.
The monthly bill at four accounts, worked out
At four social accounts, the BetterSocials Creator plan's 1,000 AI credits pay for up to 1,000 AI replies or drafts a month. At full use the plan works out to 2.9 cents per AI reply ($29 / 1,000), with the inbox and posting in the same price.
CreatorFlow costs about the same at that size, since four accounts need its Growth plan, at $30 a month or $24 billed yearly, for 10,000 DMs, five accounts and five seats. What BetterSocials adds for that money is AI replies written in your voice and channels past Instagram.
ManyChat bills by contacts instead of accounts. Pro is $39 a month, billed monthly, with 2,500 active contacts, and each extra contact costs $0.05. A Pro account that reaches 4,000 people in a month pays the $39 plus 1,500 extra contacts at $0.05 each, which comes to $114 ($39 + 1,500 x $0.05 = $114).
InstantDM's entry plan is $9.99 a month billed yearly. Then comes the separate bill from your model provider, which grows with every reply the agent writes.
What happens at the credit limit
Each AI reply or draft in BetterSocials, for a comment or a DM, spends 1 AI credit. Spam is skipped and costs nothing.
When the credits run out, the AI pauses, and the plan never charges more on its own.
The Inbox still works. You can answer every comment and DM yourself there while the AI is paused. Contacts, DMs and keyword automations stay unlimited on every plan, because the credits meter AI writing only.
ManyChat's limit is the contact count, and the overage is billed. Past the included contacts, each extra contact costs $0.10 on Essential, $0.05 on Pro and $0.025 on Business, billed monthly. On an own-key tool, the limit is whatever your model provider's account allows, and the provider bills per use.
ChatGPT Plus and the OpenAI API are two separate bills
ChatGPT Plus doesn't include API usage, according to OpenAI's help center. The API runs on its own account and is billed per use. A ChatGPT subscription won't pay for an n8n workflow or for InstantDM's agent.
Claude and ChatGPT connect to BetterSocials with no API key at all. Both sign in with your normal BetterSocials login through OAuth, the "sign in with your account" flow you've used on other apps.
Claude can run every BetterSocials tool, from reading the inbox to sending replies in your voice. ChatGPT connects through Developer mode, which needs a paid plan and works on the web only. In a normal ChatGPT chat, only the read tools run, so it can read the inbox and draft but can't send, because OpenAI keeps write actions from custom connectors for Business, Enterprise and Edu workspaces.
When paying for your own key makes sense
If you already pay a model provider and want to choose the model yourself, InstantDM and an n8n workflow make sense. Both give you full control of the flow. You also take on a second bill and a flow to build.
Included AI makes sense if you want one bill you can predict. BetterSocials puts the model inside every plan and meters AI writing. ManyChat puts it on Pro and up, charges extra for it and meters contacts.
Template tools make sense when every reply is the same link. CreatorFlow and LinkDM run a keyword campaign with no AI bill at all, and they leave the questions people ask to you.
BetterSocials' AI replies, plan by plan
For creators and local businesses whose comments and DMs bring in customers, and who want AI to answer both in their voice for one flat price, BetterSocials is the fit. BetterSocials is an AI social media manager for local businesses, creators and small agencies, and the AI is included on every plan.
The AI replies setting sits under Settings, then AI voice, with a Comments section and a DMs section. Each one has three settings:
- Off. You write every reply, and AI assist drafts one in your voice when you click it.
- Draft for me. Every new comment or DM gets a draft in your voice the moment it arrives, and nothing posts until you approve it.
- Reply in my voice. Everyday comments get an answer 1 to 5 minutes later, and a DM gets one about a minute after it arrives.
Questions wait in Needs reply unless you turn on Answer questions too. That switch only turns on once you've written at least one AI rule, a plain sentence with your prices, hours or booking link. DM replies cover Instagram, Facebook and TikTok, with TikTok limited to accounts outside the UK and Europe.
The plans:
- Creator: $29 a month for 4 social accounts, 1 login and 1,000 AI credits a month.
- Pro: $49 a month for 6 social accounts, 1 login and 2,000 AI credits a month.
- Team: $99 a month for 12 social accounts, unlimited teammates and 4,000 shared AI credits a month.
Every plan starts with a 7-day free trial, card required.
FAQ
Do Instagram AI reply tools need my own OpenAI API key?
Usually no. BetterSocials includes the AI on every plan, and ManyChat offers it on Pro and up at extra cost. You need your own key when a tool asks for one, as InstantDM's AI agent node does with OpenAI, Claude, Gemini or DeepSeek keys, or when you build replies yourself in a workflow tool such as n8n.
Is OpenAI API billing separate from a ChatGPT subscription?
Yes. OpenAI's help center says ChatGPT Plus doesn't include API usage, and the API is billed per use on its own account. A reply tool that runs on your own key adds a second, metered bill on top of the tool's price and any ChatGPT plan you pay for.
What happens when BetterSocials AI credits run out?
The AI pauses, and BetterSocials never charges more on its own. Each AI reply or draft, comment or DM, uses 1 credit, and spam is skipped. Creator includes 1,000 credits a month, Pro 2,000 and Team 4,000 shared, and you can still answer everything yourself from the Inbox.
Can I connect my own ChatGPT or Claude to BetterSocials?
Yes, with no API key. Claude and ChatGPT sign in to BetterSocials with your normal login through OAuth. Claude can read the inbox and draft and send replies, while a normal ChatGPT chat gets the read tools only, so it can read and draft but can't send.
Which AI reply tools cost less than BetterSocials?
InstantDM starts at $9.99 a month billed yearly, and CreatorFlow Pro is $15 a month, or $12 billed yearly. CreatorFlow sends template replies with no AI, and InstantDM's AI agent runs on your own model key. BetterSocials is $29 a month for four accounts, with AI replies in your voice included.
Does BetterSocials charge per contact or per AI reply?
No. Every BetterSocials plan has unlimited contacts, unlimited DMs and unlimited keyword automations. AI credits come with the plan, 1,000 a month on Creator at $29 a month for four accounts, and when they run out the AI pauses instead of billing you.