Social API comparison
Zernio caps one account per platform per profile. Postmixr allows duplicate platforms in one workspace.
Zernio: Social APIs for developers and AI agents. Two Instagrams means two billed profiles on many tiers.
Best for: Best if you need a posting API inside your own product and your team will build the UI.
Postmixr is a social media scheduler with a visual calendar, bulk CSV, REST API, and MCP for AI assistants. Free for up to 3 connected accounts. Starter is $14.99/month (3 workspaces). Pro is $39.99/month (15 workspaces) with team invites and no per-seat pricing.
Best for: Best if you want flat workspace pricing, a calendar the whole team can use, and optional API or MCP without a developer-only workflow.
Unlimited same-platform accounts. Connect every client Instagram without doubling API profile fees.
Pricing checked . View Zernio official pricing
Recommended
Free online social media scheduler for creators and teams: calendar, team workspaces, bulk CSV, and MCP.
Pinterest: connect today; publishing from Postmixr is coming soon.
Compared tool
Social APIs for developers and AI agents
Zernio limitation
Two Instagrams means two billed profiles on many tiers.
With Postmixr
Connect every client Instagram without doubling API profile fees.
Zernio uses per account pricing. Postmixr uses flat workspace tiers. Compare typical scenarios below (list prices, 2026-06).
| Scenario | Zernio | Postmixr | You save |
|---|---|---|---|
| 10 accounts | $48/mo | $39.99/mo (Pro) | $19/mo |
| 50 accounts | $168/mo | $39.99/mo (Pro) | $69/mo |
Honest checklist. Partial means limited or beta on that side.
| Feature | Postmixr | Zernio |
|---|---|---|
| Free tier | Yes | Partial |
| REST APIPostmixr API requires a paid plan | Yes | Yes |
| MCP for AI assistants | Yes | No |
| Visual calendar UI | Yes | Partial |
Postmixr supports publishing on 8 networks in this table today. Zernio lists 8 in their product materials. "Partial" means connect-only or beta.
| Platform | Postmixr | Zernio |
|---|---|---|
| Yes | Yes | |
| Yes | Yes | |
| Yes | Yes | |
| Yes | Yes | |
| Threads | Yes | Yes |
| TikTok | Yes | Yes |
| X (Twitter) | Yes | Yes |
| YouTube | Yes | Yes |
List prices from official pages, verified .
AI video tools plus a calendar for your first channels.
Creators posting to TikTok and YouTube every week.
Growing channels that need scale and priority support.
2 accounts
2 accounts
10 accounts
10 accounts
50 accounts
50 accounts
Source: Zernio website
Screenshot from the official pricing page (2026-06). Compare with the plan cards above.
Prices and plan limits come from official vendor pages only. Feature rows are based on public documentation and product positioning. We update when vendors ship major changes.
Retrieved . Per-account tiers (formerly Late)
Internal review notes: Confirm Zernio branding vs getlate.dev pricing
Building with AI? See Postmixr MCP setup for REST and Model Context Protocol access.
Start free with up to three connected accounts. Upgrade when you need more workspaces, bulk CSV, or Pro analytics.