Social Media Advertising Platforms Compared: Facebook, Instagram, TikTok, LinkedIn

Social media advertising is no longer optional — it is where attention lives. But with four major platforms competing for your budget, choosing where to invest is one of the most consequential decisions in your media plan. Each platform has different audiences, creative formats, pricing, and strengths. This guide compares them head-to-head so you can allocate your budget with confidence.

Platform Overview at a Glance

Platform	Monthly Active Users	Primary Audience	Avg. CPC	Best For
Facebook	3.0B+	25–55 years old	$0.40–$1.50	Broad reach, retargeting, local
Instagram	2.0B+	18–40 years old	$0.50–$2.00	Visual products, DTC, lifestyle
TikTok	1.5B+	16–35 years old	$0.30–$1.00	Awareness, viral content, Gen Z
LinkedIn	1.0B+	25–55, professionals	$5.00–$15.00	B2B, recruiting, enterprise

Facebook Ads: The All-Rounder

Facebook remains the largest social advertising platform by revenue. Despite narratives about its decline with younger users, it still commands the broadest reach across demographics and geographies.

Audience

Facebook skews slightly older than Instagram and TikTok. Its strongest demographic is 25–55, making it ideal for products and services with mainstream appeal. In emerging markets (Latin America, Southeast Asia, Africa), Facebook is often the dominant social platform across all age groups.

Ad Formats

• Image and video ads — The workhorse format. Single images and short videos in the feed.
• Carousel ads — Multiple images or videos that users swipe through. Great for showcasing product catalogs or multi-step narratives.
• Lead ads — Pre-filled forms that capture leads without users leaving Facebook. Conversion rates are typically 2–3x higher than sending traffic to an external landing page.
• Advantage+ Shopping — AI-automated campaigns that dynamically serve product ads from your catalog to the most likely buyers.
• Messenger and WhatsApp ads — Click-to-message ads that open a conversation. Powerful for service businesses and markets where chat commerce dominates.

Cost Benchmarks

• Average CPC: $0.40–$1.50
• Average CPM: $6–$15
• Average CPA (e-commerce): $15–$40

Facebook's auction is mature and competitive. CPMs have risen 15–25% year-over-year in most markets. That said, its targeting algorithm remains the most sophisticated, often delivering lower CPAs despite higher CPMs.

Find specialists: Best Facebook Ads Agencies

Instagram Ads: Visual-First Commerce

Instagram runs on the same Meta Ads platform as Facebook, but the audience and creative expectations are distinct enough to warrant separate strategy.

Audience

Instagram's core audience is 18–40, with strong engagement among millennials. It indexes higher for fashion, beauty, travel, food, fitness, and home decor. Users come to Instagram with a discovery mindset — they are open to finding new brands and products.

Ad Formats

• Stories ads — Full-screen vertical ads between organic Stories. High engagement, especially with swipe-up CTAs. Ideal for time-sensitive offers and product launches.
• Reels ads — Short-form video ads that appear between organic Reels. The fastest-growing ad format on Instagram, with 30–50% lower CPMs than feed ads.
• Shopping ads — Tag products directly in posts and Stories. Users can browse and buy without leaving Instagram.
• Explore ads — Appear in the Explore tab where users actively browse new content. Lower intent than search but higher intent than feed interruption.

Cost Benchmarks

• Average CPC: $0.50–$2.00
• Average CPM: $8–$18
• Average CPA (e-commerce): $18–$45

Instagram generally costs 10–30% more than Facebook per click, but conversion rates are often higher for visual products. The key is creative quality — low-effort ads get punished by the algorithm with higher costs.

TikTok Ads: The Attention Machine

TikTok has gone from experimental channel to core platform for many brands. Its short-form video format generates some of the highest engagement rates in digital advertising, and its ad platform has matured rapidly.

Audience

TikTok's audience has expanded beyond Gen Z. While 16–24 remains the most engaged group, the 25–40 segment is growing fastest. The platform excels at reaching consumers who are resistant to traditional advertising — they respond to authentic, entertaining content, not polished corporate creative.

Ad Formats

• In-Feed ads — Native video ads that appear in the For You feed. The most scalable format. Best when they feel like organic TikTok content, not traditional ads.
• Spark Ads — Boost existing organic posts (yours or a creator's) as paid ads. Combines organic social proof with paid distribution.
• TikTok Shop ads — Drive purchases directly within TikTok. Product cards overlay the video, and checkout happens in-app. This format is seeing rapid adoption in fashion, beauty, and consumer goods.
• TopView ads — Premium placement: the first ad a user sees when opening TikTok. High impact, high cost (typically $50K+ per day).
• Branded Hashtag Challenges — Encourage user-generated content around your brand. Expensive ($150K+) but can generate millions of organic impressions.

Cost Benchmarks

• Average CPC: $0.30–$1.00
• Average CPM: $5–$12
• Average CPA (e-commerce): $12–$35

TikTok often delivers the lowest CPMs among major platforms, making it excellent for awareness. However, attribution can be tricky — TikTok drives significant search lift (people see your TikTok ad, then Google your brand), which does not always show up in last-click attribution.

Find specialists: Best TikTok Ads Agencies

LinkedIn Ads: The B2B Powerhouse

LinkedIn is the most expensive social ad platform per click, but for B2B businesses, it offers targeting capabilities that no other platform can match.

Audience

LinkedIn's 1 billion+ members are professionals. You can target by job title, company size, industry, seniority level, skills, and even specific companies. This precision makes it the go-to platform for enterprise SaaS, consulting, recruiting, and professional services.

Ad Formats

• Sponsored Content — Single image, video, or carousel ads in the feed. The most versatile format for driving awareness and engagement.
• Message Ads (InMail) — Direct messages to targeted professionals. Open rates of 30–50% but can feel intrusive if overused. Best for high-value offers like event invitations or executive-level content.
• Thought Leader Ads — Promote posts from individual executives rather than company pages. These generate 2–3x higher engagement because they feel personal.
• Document Ads — Share downloadable PDFs, whitepapers, or reports directly in the feed. Great for lead generation with gated content.
• Lead Gen Forms — Pre-filled forms using LinkedIn profile data. Higher conversion rates than sending users to external landing pages.

Cost Benchmarks

• Average CPC: $5–$15
• Average CPM: $30–$80
• Average CPL (cost per lead): $50–$200

LinkedIn's CPCs look painful compared to other platforms, but the lead quality justifies the cost for B2B. A $100 lead from LinkedIn is often worth more than a $10 lead from Facebook because of the professional context and targeting precision.

Find specialists: Best LinkedIn Ads Agencies

Which Platform Should You Choose?

Use this decision framework based on your business type:

E-Commerce / DTC

Primary: Meta (Facebook + Instagram) for broad reach and proven conversion infrastructure. Secondary: TikTok for awareness and creative testing. Consider: Google Shopping alongside social to capture search demand.

B2B SaaS / Professional Services

Primary: LinkedIn for targeting decision-makers. Secondary: Google Ads for high-intent search. Consider: Meta remarketing to stay top-of-mind with prospects who visited your site.

Local Businesses

Primary: Facebook with geographic targeting. Secondary: Instagram for visual industries (restaurants, salons, real estate). Consider: Google Local Services Ads for service businesses.

Consumer Apps / Entertainment

Primary: TikTok for user acquisition and virality. Secondary: Instagram Reels for similar audience with broader reach. Consider: Snapchat for the 13–24 demographic.

Multi-Platform Strategy: Best Practices

• Do not spread too thin — Master one or two platforms before adding a third. Spreading a small budget across four platforms gives none of them enough data to optimize.
• Adapt creative per platform — Do not run the same ad everywhere. TikTok requires native, raw video. Instagram demands polished visuals. LinkedIn needs professional tone. Facebook is somewhere in between.
• Unified measurement — Use a single attribution tool or UTM framework across all platforms so you can compare performance fairly.
• Budget fluidity — Review performance monthly and shift budget toward whatever platform is delivering the best CPA or ROAS. Do not lock yourself into a fixed split.

Need Help Managing Multiple Platforms?

Running ads across Facebook, Instagram, TikTok, and LinkedIn requires different creative skills, platform expertise, and optimization strategies. Many businesses find it more effective to partner with a specialized agency that already has expertise across platforms.

Browse agencies on Pick an Agency by platform specialty, or read our guide on how to choose the right agency for your business. You can also filter by location to find top agencies in the United States or in your specific market.