Zernio is a social media API covering 14 platforms with publishing, inbox, and analytics as separate paid modules. SocialAPI.ai includes inbox on every plan, including Free, with flat pricing and no add-ons.
TL;DR
SocialAPI.ai is a Zernio (Late) alternative for teams that want inbox access included on every plan instead of bolted on as a paid module. It bundles publishing, comments, DMs, reviews, and a 75+ tool MCP server in one flat price. Zernio still wins for niche network coverage like Reddit, Pinterest, and Bluesky.
The honest answer, before we get into specifics about Zernio (Late).
Zernio’s base plans cover publishing only. To get inbox (comments + DMs) and analytics, you pay add-ons: $10/mo on Build, $50/mo on Accelerate, $1,000/mo on Unlimited. SocialAPI.ai includes inbox access on every plan, even the free Hobby tier. At comparable feature sets, SocialAPI.ai is 1.3–2.4x cheaper once Zernio’s add-ons are factored in.
At a glance
Feature matrix
| Feature | SocialAPI.ai | Zernio (Late) |
|---|---|---|
Publishing | ||
| Publish & schedule posts | ||
| Platforms covered (inbox + publishing) | 11 platforms | 14 platforms |
Engagement | ||
| Read & reply to comments | (all plans) | (paid add-on) |
| Direct messages (read + send) | (all plans) | (paid add-on) |
| Google Reviews (read + reply) | ||
| Webhook delivery | ||
Developer experience | ||
| OAuth 2.1 for third-party auth | ||
| Official SDK libraries | (5 languages) | (8 languages) |
Pricing | ||
| Inbox included on free tier | ||
AI agents | ||
| MCP server for AI agents | (75+ tools, full inbox) | Partial (scheduling + retrieval only) |
Show, don't tell
# List inbox comments, included on every plan, including Free
curl -X GET "https://api.social-api.ai/v1/inbox/comments" \
-H "Authorization: Bearer sapi_key_..."# List comments, requires Inbox add-on ($10–$1,000/mo extra)
curl -X GET "https://api.zernio.com/v1/comments" \
-H "Authorization: Bearer API_KEY" \
-H "X-Workspace-Id: WORKSPACE_ID"SocialAPI.ai includes inbox access on every plan. Zernio’s inbox (comments + DMs) is a paid add-on on top of the base plan price.
Pricing
At the lower tiers, SocialAPI.ai and Zernio land at similar prices once you add Zernio’s inbox add-on. But at scale, the gap is dramatic: SocialAPI.ai’s Empire plan ($349/mo for 200 brands) vs. Zernio’s Unlimited with inbox ($1,999/mo). That’s nearly a 6x difference for comparable functionality.
Scale
10 brands
SocialAPI.ai
$29/mo
Zernio (Late)
$29/mo (Build + inbox add-on)
Scale
50 brands
SocialAPI.ai
$109/mo
Zernio (Late)
$99/mo (Accelerate + inbox)
Scale
200 brands
SocialAPI.ai
$349/mo
Zernio (Late)
$1,999/mo (Unlimited + inbox)
Decision guide
Zernio supports 14 platforms including Reddit, Pinterest, Bluesky, and Snapchat. SocialAPI.ai covers 11, including Telegram, Zalo, and WhatsApp DMs. If you need those remaining niche networks, Zernio adds them, though its inbox and analytics are paid add-ons rather than included.
Pick Zernio (Late)Zernio offers 8 official SDKs (Node.js, Python, Go, Ruby, Java, PHP, .NET, Rust). SocialAPI.ai offers 5 (Python, TypeScript, Go, .NET, Java). Both cover the major languages. Zernio has the edge if you need Ruby, PHP, or Rust.
It dependsSocialAPI.ai includes inbox access on every plan, including Free. Zernio charges inbox as a paid add-on ($10–$1,000/mo extra). At the Empire tier, SocialAPI.ai is nearly 6x cheaper for equivalent functionality.
Pick SocialAPI.aiSocialAPI.ai’s MCP server exposes 75+ tools covering publishing, inbox, reviews, and account management. Zernio’s MCP server is limited to scheduling and post retrieval, no inbox management.
Pick SocialAPI.aiFAQ
Zernio’s base plans cover publishing only. Inbox (comments + DMs) and analytics are paid add-ons. At the Build tier, Zernio + inbox costs $29/mo vs. SocialAPI.ai’s $29/mo, comparable. But at scale, SocialAPI.ai’s Empire plan ($349/mo for 200 brands) is nearly 6x cheaper than Zernio’s Unlimited + inbox ($1,999/mo).
No. Zernio’s inbox (comments and DMs) is a paid add-on on every plan: $10/mo on Build, $50/mo on Accelerate, and $1,000/mo on Unlimited. SocialAPI.ai includes full inbox access on every plan, including the free Hobby tier.
Yes, but it’s limited. Zernio’s MCP server supports scheduling and post retrieval for Claude Desktop but does not include inbox management (comment replies, DM sending). SocialAPI.ai’s MCP server exposes 75+ tools covering the full API surface: publishing, comments, DMs, reviews, mentions, and account management.
Zernio supports 14 platforms: Twitter/X, Instagram, Facebook, LinkedIn, TikTok, YouTube, Pinterest, Reddit, Bluesky, Threads, Google Business, Telegram, Snapchat, and WhatsApp. SocialAPI.ai supports 11: Instagram, Facebook, Threads, TikTok, YouTube, X/Twitter, LinkedIn, Telegram, WhatsApp, Zalo, and Google Business Profile. If you need Pinterest, Reddit, or Bluesky, Zernio adds those niche networks.
Yes. Zernio provides 8 official SDKs: Node.js, Python, Go, Ruby, Java, PHP, .NET, and Rust. SocialAPI.ai provides 5 official SDKs: Python, TypeScript, Go, .NET, and Java. Both cover the most popular languages; Zernio has the edge with Ruby, PHP, and Rust.
SocialAPI.ai’s Hobby plan is free forever with 2 brands, 10 posts/mo, and 50 interactions/mo, with full inbox access (comments, DMs, reviews). Zernio’s free plan includes 2 profiles and 20 posts/mo but does not include inbox access.
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