First100 vs Buffer
Buffer is the established social media toolkit for small businesses and agencies: a calendar, a content library, a browser extension, a mobile app, team permissions and, since July 2026, a Mentions tab to reply to X mentions from inside Buffer. It covers far more channels than First100. First100 is narrower and agent-native: it does not have an app at all, it gives your AI agent the tools to plan, publish, learn, find conversations, audit the site and reach out.
Pick Buffer if
You manage many channels, work in a team, and want a mature app with a mobile client and a free tier.
Pick First100 if
You work inside an AI agent, publish on X, LinkedIn, Threads or Bluesky, and want the loop after the send: learning, radar, search, tracked links, outreach.
Side by side
| What | Buffer | First100 |
|---|---|---|
| Agent access | unknown | Yes. One MCP URL; 42 tools inside Claude, ChatGPT, Codex, Cursor or any MCP client. The agent writes, First100 does the rest. |
| Platforms | Many, including Instagram, Facebook, TikTok, YouTube, Pinterest, LinkedIn, X, Threads, Bluesky, Mastodon (site). | X, LinkedIn, Threads, Bluesky. |
| Writing surface | Its own composer, ideas library, custom post templates (changelog, 2026-07-22), image editor (changelog, 2026-09-15). | None. You write in your agent. |
| Brand memory | unknown | Brand profile, product changelog and competitor notes the agent reads before every post. |
| Learns from your results | Analytics and post-type filters (changelog, 2026-09-02). | what_worked: which of your own patterns lift engagement, per platform, with sample sizes. |
| Conversations to join | Mentions tab: track and reply to X mentions of your account (changelog, 2026-07-13). | Reply radar surfaces conversations to join and drafts an angle; you post from your own account. Nothing is automated. |
| Search and AI visibility | unknown | Site audit for Google and AI answer engines with fixes, Google Search Console reads, IndexNow, AI-referral tracking. |
| Outreach | unknown | Local business search, buyer questions, journalist requests, cold email from your own mailbox. |
| Link tracking to revenue | Link shortening (site). | Tracked links through to signups and revenue, per post and per platform. |
| Pricing | Free: 3 channels, 10 scheduled posts each. Essentials $5 per channel/mo ($60/yr). Team $10 per channel/mo, unlimited members (pricing page, 2026-09-15). | $5 week trial, Starter $39/mo (2 brands), Pro $59/mo (5 brands). Yearly discounts. |
| Content generation | AI assistant (site). | No model inside. Your agent writes; nothing is generated server-side. |
Buffer facts were read from its own pages on 2026-09-15: buffer.com/, buffer.com/pricing, buffer.com/changelog. “unknown” means we did not find it there, which is not proof it is missing. Tell us what is wrong at support@firsthundred.app and we will fix it.
What is the difference between First100 and Buffer?
Buffer is the established social media toolkit for small businesses and agencies: a calendar, a content library, a browser extension, a mobile app, team permissions and, since July 2026, a Mentions tab to reply to X mentions from inside Buffer. It covers far more channels than First100. First100 is narrower and agent-native: it does not have an app at all, it gives your AI agent the tools to plan, publish, learn, find conversations, audit the site and reach out.
When should I pick Buffer over First100?
You manage many channels, work in a team, and want a mature app with a mobile client and a free tier.
When should I pick First100 over Buffer?
You work inside an AI agent, publish on X, LinkedIn, Threads or Bluesky, and want the loop after the send: learning, radar, search, tracked links, outreach.