Buffer vs PlugKit: schedule or converse?

The real difference: scheduling or conversations

Buffer is a scheduling tool. You connect your channels, fill a queue, Buffer publishes on time, measures results and lets you reply to comments in a shared inbox. It does this across about a dozen networks, with a free plan. Solid, simple and cheap.

PlugKit starts from the other end. It’s an API and an MCP server that give your AI assistant (Claude, ChatGPT and others) access to your accounts. You say what you want, your AI drafts it, you approve, PlugKit runs it: publishing, but also reading and answering DMs, sending your link to people who comment, following up with a lead.

So the real question isn’t “which is better”. It’s: do you only need to schedule posts, or do you also need to hold conversations?

Publishing to your networks: both do it

On publishing, Buffer covers more ground. Its channel list includes Instagram, Facebook (Pages), TikTok, LinkedIn (Pages and profiles), X, YouTube Shorts, Threads, Pinterest, Google Business Profile, Bluesky, Mastodon and Substack. PlugKit publishes to Instagram (feed, reels, stories), a Facebook Page, TikTok, YouTube, X and your LinkedIn profile: no Pinterest, no Google Business Profile, no LinkedIn company Page.

The difference is in how you publish. With PlugKit you don’t fill in a form: one sentence to Claude produces one draft per network, each with its own caption. We filmed it (in French, with an English summary):

Post to all your social accounts with one sentence to Claude (no code)

Coming on the channel on October 27, 2026

Open the channel

One honest point: PlugKit’s dashboard editor has a single caption field (we used the interface in French). To write a different caption per network, you go through your AI or the API. If you prefer a classic scheduling interface, that’s Buffer’s turf.

Replying to comments and DMs

This is where the two tools really part ways.

• Buffer: an inbox to manage and reply to comments on Instagram, Facebook, TikTok, YouTube, X, LinkedIn, Threads and Bluesky. No private messaging is mentioned on its pages as of October 24, 2026, nor comment-to-DM, sequences or broadcasts.
• PlugKit: one inbox for Instagram, Messenger, WhatsApp and Telegram DMs, reading and replying to Instagram and Facebook comments, comment-to-DM, broadcasts and follow-up sequences. On the other hand, its documentation says TikTok and YouTube don’t expose messaging to third-party apps.

What we measured in our own tests: a PlugKit welcome message went out 8 seconds after a new contact’s first DM, and the follow-up was set at 23 hours rather than 24 to stay inside Meta’s window. The other demos are in our PlugKit review.

That window matters. In Occirank’s Instagram inbox, checked October 24, 2026, only 3 conversations out of 160 were still within 24 hours of the person’s last message. Past that, Meta blocks free-form messages: a DM tool doesn’t get around the rule, it helps you reply in time.

Buffer pricing vs PlugKit: per channel or per account tier

Buffer charges per connected channel, with graduated tiers: on Essentials billed monthly, $6 for channels 1 to 10, $4 for 11 to 25, $3 for 26 to 50, then $1. Team costs $12 per channel for 1 to 10, then $4, $3 and $2. PlugKit charges per tier of accounts: $49 up to 5, $97 up to 30, then $3 per account from 31 to 100. Prices read October 24, 2026, billed monthly (taxes not specified on the pages we read):

The math for 30 channels on Essentials: 10 × $6 + 15 × $4 + 5 × $3 = $135. Billed yearly, Buffer quotes about $5 per channel on Essentials (about $25 for 5 channels); PlugKit doesn’t publish a yearly price. Plan-by-plan detail is on our Buffer pricing and PlugKit pricing pages.

The rule of thumb: to publish only, Buffer Essentials costs less below 20 channels and from 70 channels up. From 20 to 68 channels, PlugKit Pro costs less; at 69 channels both come to $214; at 100 channels, Buffer Essentials comes to $245 versus $307 for PlugKit. As soon as you need DMs, the comparison changes: Buffer doesn’t mention them. PlugKit has two variable costs: X API calls, passed through at cost and capped at $20 a month by default, and Reel Studio video credits, sold separately beyond the included ones (10 credits for $15).

Running it from your AI: two MCP servers, two scopes

Good news for Buffer users: Buffer has a public GraphQL API from the Free plan and an official MCP server (https://mcp.buffer.com/mcp), with no plan specified. From Claude, you can read your channels, manage your queue, schedule and edit posts, capture ideas and read post analytics. API quotas range from 3,000 requests a month (Free) to 15,000 (Team).

PlugKit’s MCP server (https://api.plugkit.co/mcp) covers 103 tools according to its documentation: publishing, plus messaging, comments, automations, broadcasts, sequences, analytics and Meta ads. In Claude, you add a custom connector with that address, sign in, and you’re done.

Bottom line: if your AI only needs to schedule, both work. If it also needs to reply, triage your inbox and follow up, only PlugKit documents that.

What Buffer does better

• Entry price: a permanent free plan, then $6 per channel.
• Publishing coverage: Pinterest, Google Business Profile, Mastodon and Substack, which PlugKit doesn’t cover.
• Comments across networks: TikTok, YouTube, LinkedIn and X in the same inbox.
• Teams: unlimited users, content approval and access permissions on the Team plan.
• LinkedIn analytics: PlugKit has none on that network.

Moving from Buffer to PlugKit (or keeping both)

You don’t have to migrate everything. The simplest setup can be Buffer for scheduling and PlugKit for conversations. If you want to switch:

1. List your Buffer channels and what you post on each.
2. Keep Buffer for the networks PlugKit doesn’t cover (Pinterest, Google Business Profile, Mastodon, Substack), if you post there.
3. Start the PlugKit trial with your Instagram account: only one account can be connected during the trial, so test the one that gets the most DMs.
4. Recreate your next posts with your AI. Example request: “Schedule this reel for Tuesday at noon on Instagram and TikTok, with a caption adapted to each.”
5. Remove the same posts from your Buffer queue, so nothing goes out twice.

For options beyond these two, our Buffer alternative guide sorts seven tools by need.

The classic trap: scheduling the same post in both Buffer and PlugKit. Your followers will see it twice.