Side-by-side comparison · Marketing & Ads
Buffer vs Klaviyo vs Postiz
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Small businesses, solo founders and creators who want to post regularly across several social networks without paying for an enterprise suite.
Pick it if: Online stores that want their email and SMS to run on real customer behaviour.
Pick it if: Creators and small businesses who want Claude or another AI agent to handle their social posting, and technical users who'd rather host their own scheduler.
Overview
| Attribute | Buffer | Klaviyo | Postiz |
|---|---|---|---|
| In one line | Schedules posts to every social network from one queue, with an AI writing helper. | Email and SMS for online stores, with AI that writes, segments and predicts. | Open-source social media scheduler that Claude and other AI agents can run for you. |
| Pricing model | Freemium | Freemium | Freemium |
| Starting price | $6/channel/mo | From $20/mo | $29/mo |
| Free plan | Yes | Yes | No |
| Works with Claude Code | Yes | Yes | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Buffer | Klaviyo | Postiz |
|---|---|---|---|
| Overall rating | 4.2 | 4.3Winner | 3.9 |
| Ease of useHow quickly someone non-technical gets value from it. | 5.0 | 4.0 | 3.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 3.5 | 5.0 | 4.0 |
| Output qualityHow good the results are before you fix them. | 4.0 | 4.5 | 4.0 |
| Value for moneyWhat you get for the price, including the free plan. | 4.5 | 3.5 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 4.5 | 3.5 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Buffer | Klaviyo | Postiz |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | No |
| Mobile app | Yes | Yes | – |
| Desktop app | No | No | No |
| Browser extension | Yes | No | – |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | – | Yes | – |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | Yes |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | – | – | – |
| Makes images | No | – | Yes |
| Makes video | No | No | Yes |
| Writes code | No | No | No |
| Runs agents or automations | No | Yes | Yes |
| Learns your brand or style | – | Yes | – |
| Works in many languages | Yes | Yes | – |
| Capabilities score | 8/ 17 | 10/ 17 | 8/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Buffer | Klaviyo | Postiz |
|---|---|---|---|
| Plans | Free Free A sole trader posting a few times a week. | Free Free New stores building their first flows. | Self-hosted Free Technical users happy to run their own server. |
EssentialsOur pick $6/channel/mo, or $5/channel/mo billed yearly One person running a business's social accounts. | EmailOur pick From $20/mo Most stores once they pass 250 contacts. | Standard $29/mo, or $23/mo billed yearly A creator with a few accounts. | |
Team $12/channel/mo, or $10/channel/mo billed yearly Small teams who need approvals. | Email and SMS From $35/mo Stores that want text messages in the same flows. | TeamOur pick $39/mo, or $31/mo billed yearly Small brands with a team. | |
Enterprise Custom Large brands with many stores or markets. | Pro $49/mo, or $39/mo billed yearly Businesses with lots of accounts. | ||
Ultimate $99/mo, or $79/mo billed yearly Agencies. | |||
| Which plan to pick | Start on Free to see if you will actually post regularly. Move to Essentials once you need more than 10 posts queued per channel; Team is only worth it when someone else needs to approve posts. | Start on Free and build your welcome and abandoned cart flows before you pay anything. Move to Email when you cross 250 contacts, and only add SMS once email is working, because text messages cost extra per send. | Most small businesses should take the hosted Team plan for the team access and AI images. Standard works for a solo creator. Self-host only if you or someone on your team is comfortable running a server. |
Key features
| Attribute | Buffer | Klaviyo | Postiz |
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Pros and cons
| Attribute | Buffer | Klaviyo | Postiz |
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Who each one is for
| Attribute | Buffer | Klaviyo | Postiz |
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Questions people ask
Which is better, Buffer, Klaviyo or Postiz?
Klaviyo scores highest overall in our ratings (Buffer 4.2/5, Klaviyo 4.3/5 and Postiz 3.9/5). Buffer is best for scheduling posts across many networks and small teams on a tight budget. Klaviyo is best for abandoned cart recovery and segments from a description. Postiz is best for Letting Claude schedule your social posts and hosting your own scheduler for free.
Which is cheaper, Buffer, Klaviyo or Postiz?
Buffer: There's a free plan, and paid plans start at $6/channel/mo. Klaviyo: There's a free plan, and paid plans start at From $20/mo. Postiz: There's no free plan. Paid plans start at $29/mo.
Which is easier to use, Buffer, Klaviyo or Postiz?
Buffer rates highest for ease of use in our scores. Small businesses, solo founders and creators who want to post regularly across several social networks without paying for an enterprise suite.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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