Buffer vs Postmill AI
Buffer
buffer.com
Postmill AI
postmill.aiSide by side
| Figure | Buffer | Postmill AI |
|---|---|---|
| Price from | $5/mo | $7.50/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 5 | 9 |
| Spec score · Social Media Management Tools | 9.5 (#1) | 8.4 (#30) |
| Spec score · AI Social Media Management Software | 9.5 (#1) | 8.1 (#25) |
| Free plan | Yes | Yes |
| Integrations | Buffer's integrations directory lists 24 apps, including Canva, ChatGPT, Claude, Dropbox, Google Drive, IFTTT, Make, n8n, WordPress, and Zapier. | Listed channel integrations include X, Instagram, LinkedIn, TikTok, YouTube, Discord, Telegram, Slack, Mastodon, Reddit, WordPress, and others. |
| Security | Buffer supports two-factor authentication, and Team-plan administrators can require it for every organization member. | The homepage states that channel connections use official OAuth and that no passwords are stored. |
| Paid from | 5 | 9 |
| Support | Buffer says its global Customer Advocacy team provides human support across time zones with no bots. | Priority support is included in the Agency plan. |
Plans
Buffer
- FreeFree
- Essentials$5 a month
- Essentials$60 a year
- Team$10 a month
- Team$120 a year
Postmill AI
- Starter$9 a month
- Starter$90 a year
- Pro$29 a month
- Pro$290 a year
- Team$99 a month
- Team$990 a year
- Agency$249 a month
- Agency$2,490 a year
- Self-HostedFree
In their own words
Buffer
Buffer is a social media management tool for scheduling posts, developing content, and reviewing performance across supported channels. Its tools include an idea library, an AI Assistant, and options to brainstorm, rewrite, and shape posts for specific platforms. A community inbox brings comments from multiple accounts into one dashboard for replies, while teams can edit and approve posts together. The free plan lasts indefinitely and supports up to three connected channels, 10 scheduled posts per channel, 100 ideas, and one user. Essentials and Team include a 14-day free trial; annual billing starts at $5 per month for one channel. Team adds unlimited team members and approval workflows. Buffer supports Android, iOS, web, browser extensions, and API access. Supported channels include Instagram, Facebook, TikTok, LinkedIn, Threads, Bluesky, YouTube Shorts, Pinterest, Google Business, Mastodon, and X. Integrations include Canva, Google Drive, Dropbox, and Zapier.
Postmill AI
Postmill AI combines social media content creation, scheduling, publishing, replies, and reporting in a web platform, with API and self-hosted options. The maker lists 45 channels across social, chat, blog, and email. A composer can adapt one draft by channel with previews, format overrides, brand-voice rewrites, and preflight checks. Its design studio includes a canvas, layers, brand kits, a five-track video timeline, and 36 generation studios. Scheduling tools include a visual calendar, timezone-aware recurring slots, auto-post queues, CSV bulk import, and automatic retries after network hiccups. Postmill says it snapshots metrics daily and brings replies from 19 channels into one inbox, with AI-drafted responses. Writing and replies use 30 model providers, and AI runs on customers’ own keys without credit packs, AI seat fees, or markup. The core is AGPL-3.0 open source; self-hosting on the customer’s hardware is free. Paid plans are billed monthly: Starter is $9 a month, Pro $29 a month, Team $99 a month, and Agency $249 a month.