Cosmo vs Buffer
Buffer is a simple, inexpensive social scheduler with an AI assistant. Cosmo writes and runs the posts for you, and also handles ads, SEO + GEO, cold email and launch, all approved by text.
Head to head
| Topic | Cosmo | Buffer |
|---|---|---|
| What it is | An AI CMO across all of marketing | A social scheduler with an AI Assistant |
| Who writes the posts | Cosmo plans, writes, designs and schedules; you approve | You, with AI suggestions |
| Networks | LinkedIn, Instagram, Facebook, TikTok, X, Threads | Bluesky, Facebook, Google Business Profile, Instagram, LinkedIn, Mastodon, Pinterest, Substack, Threads, TikTok, X, YouTube |
| Paid ads | Yes: Meta, Google, TikTok, LinkedIn | Not found in our research |
| SEO, cold email, launch | Included | Not found in our research |
| Free option | 7-day free trial | Free plan: 3 channels, 10 scheduled posts per channel; 14-day trial on paid plans |
| Price | $99 a month, one plan, everything unlocked, no credits | Essentials $5 and Team $10 per channel a month (approx., checked November 2026; check their site) |
Facts about Buffer come only from the sources below. Prices are approximate, last checked November 2026; check their site for current plans. Where we found nothing, we say so. If something here is wrong, email roy@cosmocmo.com and we'll fix it.
- · Buffer pricing page, checked November 4, 2026
If you write your own posts and only need them scheduled, Buffer is cheaper and simpler. If you want the posts written, designed and promoted for you, along with ads and SEO, Cosmo does the work and asks for your yes.
What Buffer does well
- A free plan, and paid plans from $5 per channel a month.
- More networks than Cosmo posts to, including Bluesky, Mastodon, Pinterest, Google Business Profile, Substack and YouTube.
- Simple and quick to learn.
Choose Buffer if
- You write your own posts and need a scheduler.
- You post to Pinterest, Bluesky, Mastodon or Substack.
- Your budget is close to zero.
Choose Cosmo if
- You don't have time to write posts.
- You want social, ads and SEO to follow one plan.
- You'd rather reply 👍 than open a scheduler.
Cosmo and Buffer
How much does Buffer cost?
On November 4, 2026 Buffer had a free plan (3 channels, 10 scheduled posts per channel), Essentials at $5 and Team at $10 per channel a month, with a 14-day trial on paid plans. Check their site.
Does Buffer write posts for me?
Buffer has an AI Assistant that suggests text. You still decide what to post and when. Cosmo writes the plan and the posts and asks for your yes.
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