Platform API costs: mostly free, with one major exception
Most social media platforms provide API access for free — you pay nothing per call to post to Instagram, TikTok, LinkedIn, Facebook, YouTube, Threads, or Reddit. You need an approved developer app, but there's no per-call charge.
The exception is X (formerly Twitter). Since 2023, X charges for API access at any meaningful scale. Basic tier ($100/mo) allows 50k tweets/month read access and limited writes. Pro tier ($5,000/mo) adds higher volumes.
// X/Twitter API cost example (2026 pricing)
// Basic tier: $100/mo → 50k tweets/mo read, limited write
// Pro tier: $5,000/mo → 1M tweets/mo read, 300k tweets write
// Every other platform (Instagram, TikTok, LinkedIn, etc.):
// Free with approved developer app
// Rate limits apply but no per-call chargesPlatform API pricing is free ≠ zero engineering cost. Building and maintaining 7 separate OAuth integrations, token refresh loops, and rate limit handlers is the actual cost — not per-call fees.
Unified API pricing: what you actually pay
Unified API providers add a layer between your code and the platforms. Here's how pricing works across the main options in 2026:
// Aether API — usage-based, no flat monthly minimum
// Free tier: 10k API calls/mo, 3 connected accounts
// Starter: $29/mo → 100k calls, 15 accounts
// Growth: $79/mo → 500k calls, 50 accounts
// Scale: $199/mo → 2M calls, 150 accounts
// Ayrshare — flat monthly
// Business: $49/mo → unlimited accounts, limited platforms
// Premium: $149/mo → all platforms, priority support
// Buffer API — plan-gated, not usage-based
// Team plan required for API access: ~$120/mo
// No per-call charges but feature limitations applyHidden costs in DIY integrations
- OAuth maintenance: Platform OAuth flows change 1–2 times per year. Instagram alone has had 3 breaking auth changes since 2022.
- Token refresh bugs: Long-lived token refresh failures are silent — users just stop getting their posts published. Debugging takes hours.
- Rate limit handling: Each platform has different limit reset windows, header formats, and retry strategies. Getting this wrong causes post failures.
- Platform API deprecations: TikTok deprecated their v1 API in 2023; Instagram deprecated the legacy graph API endpoint in 2024. These require emergency re-integrations.
- Webhook infrastructure: Receiving platform events (post published, DM received) requires your own endpoint, signature verification, retry handling, and dead-letter queue.
Total cost of ownership: build vs buy
// Total cost of ownership: build 7 integrations yourself
// Engineer time:
// Initial integration: ~4 weeks (one engineer)
// OAuth per platform: ~2 days each = 14 days
// Webhook/event handling: ~5 days
// Error handling + retry: ~3 days
// Annual maintenance: ~1 week/year (API changes, token refresh bugs)
// At $150/hr contractor rate:
// Initial: 160 hrs × $150 = $24,000
// Annual: 40 hrs × $150 = $6,000/yr
// Aether Growth plan: $79/mo = $948/yr
// Break-even vs DIY in month 2The math above is conservative. It doesn't include the opportunity cost of engineers not building product features, the cost of production incidents caused by platform API changes, or the cost of debugging token refresh failures at 2am.
When building your own integrations makes sense
- You only need one platform and don't plan to add others
- You need platform-specific capabilities that no unified API exposes (e.g., TikTok Creator Marketplace, LinkedIn Thought Leader posts)
- You're at very large scale where per-seat pricing of unified APIs exceeds the engineering cost
- You have in-house platform expertise — a dedicated team that already maintains platform integrations
For most developer products — a SaaS tool, an AI agent, an automation platform — you hit break-even on a unified API in the first month, well before the integration is stable enough to ship.
Picking the right unified API
- Need TikTok, Threads, Reddit, MCP, or inbox API? → Aether
- Need Pinterest, Telegram, or Google Business Profile? → Ayrshare
- Budget-constrained, simple scheduling only? → Buffer API (team plan required)
- Enterprise, compliance-heavy environment? → Hootsuite or Sprout Social (but expect $249+/mo/seat)