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Buffer vs Sydium

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Cheaper paid plan
Buffer — $5/mo vs $28/mo for Sydium
Free plan
Only Buffer (Sydium has paid plans only)
Public API
Both have one
Best fit
Buffer: Solo creators and small businesses posting to a handful of networks · Sydium: Founders and solo operators who want posts that sound like them
Platforms
Buffer: Web, iOS, Android, Chrome extension · Sydium: Web, Chrome extension

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

BufferSchedules, publishes and analyzes social posts across 12 networks, with an AI assistant for drafting and repurposing included on every plan.SydiumLearns your writing voice from past posts, then drafts, schedules and answers comments across eleven social platforms

Side by side

FactBufferSydium
CategorySocial Media ManagementSocial Media Management
Pricing modelFreemiumPaid
Starts at$5/mo$28/mo
Public APIYesYes
Trust score82 / 10078 / 100
PlatformsWeb, iOS, Android, Chrome extension, APIWeb, API, Chrome extension
CompanyBuffer, Inc.Sydium
Launched2010—
Last verifiedOct 29, 2026Oct 15, 2026

What our research says

Buffer

Buffer fits solo creators, small businesses and lean agencies who want simple scheduling and analytics with AI help on drafts and no add-on fee. Brands that need social listening, paid-ads management or deep enterprise reporting will outgrow it.

Pros

  • AI Assistant included on every plan, including free
  • Per-channel pricing lets you pay only for the networks you use
  • Covers newer networks such as Bluesky, Threads, Mastodon and Substack
  • Public GraphQL API and CLI with documented rate limits

Cons

  • Costs scale with channel count, so many accounts get expensive on Team
  • Free plan caps the queue at 10 posts per channel and keeps 30 days of insights
  • No social listening or ad management

Sydium

Counting plans in posts instead of opaque credits is refreshing, and the voice training plus an eleven-platform spread including Bluesky, Threads, Mastodon and Google Business covers more ground than most schedulers. The thing to weigh is concentration risk: this is one person's product, and the top tier sells a priority line to that person.

Pros

  • Trains on your existing posts and site content before drafting
  • Eleven platforms including Bluesky, Threads, Mastodon and Google Business
  • Plans metered in posts, with manual posts uncapped on every tier
  • Agency tier adds seats, approvals and branded client portals
  • REST API, CLI and MCP access for posting from scripts or an AI assistant

Cons

  • No free tier at all
  • Trial requires a card up front
  • Single-founder product, so support and roadmap depend on one person
  • Video generation is billed separately in credits on top of the plan

Which one fits

Choose Buffer if you need

  • Solo creators and small businesses posting to a handful of networks
  • Agencies that add and drop client channels and want to pay per channel
  • Teams that want AI drafting without a separate subscription

Choose Sydium if you need

  • Founders and solo operators who want posts that sound like them
  • Agencies needing client portals, approvals and multiple autopilot accounts
  • Teams publishing to newer networks such as Bluesky, Threads and Mastodon

Buffer vs Sydium: the questions people ask

Is Buffer cheaper than Sydium?

On published entry prices, Buffer starts lower — $5/mo against $28/mo for Sydium. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does Buffer or Sydium have a free tier?

Buffer has a free tier; Sydium has paid plans only.

Which has a public API, Buffer or Sydium?

Both ship a public API, so either can be built on; the fact table above shows the platforms each one runs on.

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