vs
Looking for a Zernio Alternative?
Get the API plus an AI agent that already works. Paste one URL into Claude or ChatGPT and it researches, writes and schedules your posts. From $19/mo.
Trusted by 1,100+ creators and businesses
Feature Comparison
PostHero vs Zernio
Comparison based on publicly available information as of 2026.
Trusted by 1,100+ creators and businesses
Why People Switch
5 reasons to switch from Zernio
ClaudePlan next week on LinkedIn, X and Threads in my voice.
PostHeroMon
No posts yet
Tue
No posts yet
Wed
No posts yet
Thu
No posts yet
Fri
No posts yet
Get the agent, not just the API
Paste one URL into Claude or ChatGPT, sign in, start asking. Your AI researches viral content, writes in your voice and schedules to 8 platforms. Nothing to build or host, and you can try it during the free trial.
REST API
curl -X POST https://server.posthero.ai/api/v1/posts \
-H "Authorization: Bearer pk_..." \
-H "Content-Type: application/json" \
-d '{
"text": "Just shipped v2.0!",
"platforms": [{"platform": "linkedin", "accountId": "acc_123"}],
"schedule": "2026-12-01T09:00:00Z"
}'MCP server
Claude
ChatGPT
Cursor
CodexKeep your API and MCP
Developers don't lose anything by switching. Create, schedule and publish posts, upload media and pull analytics through the REST API, or call PostHero as a tool from any MCP host. API-only plan from $9/mo, unlimited posts from $19/mo.
Starter
For solo use with light needs.
Flat price, not per account
Use the API for $9/mo, or the web app for $19/mo, both with 10 accounts. $49/mo gets you unlimited accounts. Zernio charges for every connected account: 10 accounts cost $48/mo and 100 accounts cost $318/mo. With PostHero, adding a client doesn't change your bill.
Ideas from viral data, not guesses
Your AI starts from what already works. Search viral Instagram reels sorted by viral ratio and browse 10,000+ viral LinkedIn posts and templates. Then ask your AI to make one like it, in your voice.
Tracked competitors
Example@fitwithmia · 86K
Top reel: Cardio first kills your gains
@coach.dan · 52K
Top reel: Stop counting calories
@liftlab · 38K
Top reel: The warm-up myth
Profile audit
Track competitors and audit your profile
See what's working for accounts like yours. Track Instagram competitors and keywords, and get a profile audit that tells you what to post next. With an API alone, you'd have to build this yourself.
Why Switch
Why creators choose PostHero
Agent Included
Connect Claude or ChatGPT in 2 minutes. No agent to build, no prompts to maintain, no server to host.
A Dashboard for Everyone
Developers use the API. Your team writes, edits and schedules in a full editor and calendar, no code needed.
Flat Pricing
$19/mo for 10 accounts, $49/mo for unlimited. No per-account fees as you add clients.
Viral Data Built In
Viral reel search, 10,000+ viral LinkedIn posts and templates. Your AI writes from what already works.
Testimonials
What our users say about PostHero
Finally, a tool that gets multi-platform publishing right. No more copy-pasting and reformatting for each network.
Emma Williams
Social Media Manager
We've seen 3x engagement since switching to PostHero. The AI really understands what works on each platform.
Michael Torres
Agency Owner
Saved me at least 10 hours per week on content creation. Now I can focus on actually growing my business.
Sarah Green
Entrepreneur
You made it so easy. My LinkedIn content is now more engaging than ever before. I just input my ideas, and your tool handles the rest.
Victor Metelsky
Founder at Sitekick
The quality of the first post was better than anything we got from the writer we hired before. Right from the start.
Natalie Luneva
CMO at DepositFix
PostHero has completely transformed how we handle social media. We went from posting once a week to daily content across all platforms.
James Mitchell
Marketing Director
The viral posts library alone is worth the subscription. I never run out of inspiration for my content calendar.
David Park
Startup Founder
As a solopreneur, PostHero feels like having a full marketing team. It handles everything from ideation to publishing.
Lisa Martinez
Solopreneur
The AI captures my voice perfectly. People can't tell the difference between AI-assisted and my manually written posts.
Tom Anderson
Consultant
FAQ
Common questions about
switching from Zernio
Zernio is a social media API for developers: you get the publishing pipe and build the agent, the UI and the content side yourself. PostHero gives you a REST API and MCP server too, plus an AI agent that already works: connect Claude or ChatGPT, and it researches viral content, writes in your voice and schedules to 8 platforms. There's also a full dashboard for people who don't code.
Zernio charges per connected account: the first 2 are free, then $6/mo each for accounts 3 to 10, $3 each up to 100 and $1 each after that. PostHero has a standalone $9/mo API plan with 10 accounts and 100 published posts a month, or web app plans at $19/mo for 10 accounts, $49/mo for unlimited accounts and $199/mo for agencies, all with unlimited API posts. Zernio is cheaper if you only need 1 or 2 accounts.
Yes. The REST API lets you list accounts, create, schedule, update and publish posts, upload media and pull analytics. The standalone API plan costs $9/mo for 10 accounts and 100 posts a month, and every web app plan from $19/mo includes unlimited API posts. Authenticate with a Bearer API key from Settings > API. The MCP server works with Claude, ChatGPT, Claude Code, Cursor, Codex and any MCP-compatible host.
Yes. Connect them through our REST API to trigger posts from a spreadsheet, a form, an RSS feed or any other event in your stack.
PostHero has a 7-day free trial with full access to all features, including the Claude and ChatGPT connector. API keys come with any paid plan, including the $9/mo API plan. Zernio has a free plan for up to 2 accounts.
PostHero supports LinkedIn, X (Twitter), Instagram, Threads, Facebook, YouTube, TikTok and Bluesky, with Pinterest coming soon. Zernio covers more, including Pinterest, Reddit, Telegram, WhatsApp and Google Business.
Yes. PostHero learns your writing style from your posts, so whatever your AI drafts sounds like you, not like generic AI.
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