Spaces vs Zernio
Zernio: a usage-based API for developers covering social posting, ads, messaging, phone numbers, SMS and WhatsApp. Spaces: lets the AI agent you choose answer customers on the accounts you already use. Here is how they differ, and when each is the better choice.
| Spaces | Zernio | |
|---|---|---|
| What it is | Lets the AI agent you choose answer customers on the accounts you already use. | A usage-based API for developers covering social posting, ads, messaging, phone numbers, SMS and WhatsApp. |
| Built for | Business owners and small teams whose customers message them on chat apps. | Developers building social or messaging features into their own product. |
| Channels | WhatsApp, Instagram, LinkedIn, Messenger and X. | Messaging on WhatsApp, Instagram, Messenger, X, Telegram, Slack, Bluesky and iMessage, plus posting to 16 social networks. LinkedIn messaging is not listed. |
| Your existing number, connected by scanning a QR code. No Meta approval, no message templates and no Meta message fees. | Through Meta’s signup flow on the WhatsApp Business Platform. Broadcasts need templates, and Meta bills message fees to your WhatsApp Business Account. | |
| AI | Works with Claude, ChatGPT, Grok, Cursor and other AI agents through one MCP server, plus built-in routines. | An API and MCP server your developer connects to an AI model. No AI is included in the price. |
| Price | From $19 a month for one account, or $15 a month billed yearly. Priced per connected account, with no per-contact or per-seat fees. | Per connected account: the first 2 free, then $6, $3 or $1 an account a month depending on volume. Messaging past 10,000 a month, phone numbers and X messages are billed on top. |
Choose Zernio if
- You are a developer building posting, ads or messaging into your own app.
- You need channels Spaces does not cover, such as SMS, iMessage, TikTok or ads.
- You want WhatsApp broadcasts to large lists with approved templates.
Choose Spaces if
- You run a business and want your AI agent answering customers, not an API to build on.
- You need LinkedIn messages, which Zernio does not list.
- You want to keep your WhatsApp number on your phone and skip templates and Meta fees.
About how WhatsApp connects
Spaces connects the WhatsApp number you already use, so there is no approval to wait for and no template to write. Tools on the official WhatsApp Business Platform suit large template broadcasts. Each platform has its own rules about automation, which is why Spaces keeps every account inside safe limits. How Spaces keeps accounts safe.
Facts about Zernio were checked on 4 Nov 2026 from Zernio pricing and Zernio WhatsApp. Prices and features change; their site has the current version. Zernio is a trademark of its owner.
Other comparisons: ManyChat, respond.io, WATI, Tidio.