Key Takeaways: Reddit CPMs have often been below Meta's in agency reports but not in every dataset, and CPCs overlap in 2026 sources, so there is no reliable fixed discount against Facebook; compare cost per qualified result in your own accounts. Facebook offers more mature optimization and retargeting tools. Reddit wins for niche audience targeting. Facebook wins for e-commerce, broad reach, and sophisticated retargeting. The best strategy for most brands uses both: Reddit for awareness and community trust, Facebook for retargeting and conversion optimization.
Why compare Reddit Ads and Facebook Ads?
Reddit and Facebook represent two fundamentally different approaches to social media advertising. Facebook is the established giant with 3 billion users, the most sophisticated ad tools in the industry, and decades of advertiser data. Reddit is the emerging challenger with hundreds of millions of highly engaged monthly active users and uniquely powerful community targeting.
For marketers with finite budgets, choosing between these platforms or deciding how to allocate spend between them is one of the most consequential advertising decisions you can make. This comparison uses real benchmark data to help you make that decision. If you have already decided on Reddit and want a deeper dive into how the platform works, our Reddit advertising guide covers targeting, bidding, and campaign setup in detail.
How do the costs compare?
Side-by-side cost benchmarks
| Metric | Reddit Ads | Facebook Ads | Difference |
|---|---|---|---|
| CPM | About $9 for B2B awareness (Refine Labs, Q1 2026); $5-$20 for US campaigns by goal (Affect Group, Q2 2026) | About $4 for B2B awareness (Refine Labs, Q1 2026) to about $15 (Metadata B2B, 2025: $15.50) | No fixed gap: Reddit lower in some agency reports (Affect Group, Jun 2026: roughly 30-50%), higher in Refine Labs B2B awareness data |
| CPC | About $0.50-$3.50 (Stackmatix, Sep 2026; Benly, Mar 2026) | $0.60 traffic and $1.80 leads across industries (WordStream, Sep 2026); $1.95 B2B (Metadata, 2025); $3.80 B2B lead generation (Metadata, Sep 2026) | Overlapping: medians $1.25 vs $1.40 (Stackmatix, Sep 2026), so no CPC discount to claim |
| Video CPV | $0.01-$0.06 | $0.02-$0.15 | Reddit 40-60% cheaper |
| B2B Cost per Lead | No method-disclosed benchmark found | $145 (Metadata, 2025, 71 Facebook advertisers) | No sourced comparison |
| E-commerce CPA | No method-disclosed benchmark found | Median $38.99 overall, $26.80-$51.86 by industry (Triple Whale, Aug 2025-Jul 2026) | No sourced comparison |
| Minimum daily budget | Not stated in Reddit's help articles (its learning hub says fees start as little as $5 a day) | $1 | Not comparable |
Reddit's cost position varies by dataset and metric rather than holding as a consistent advantage, and any gap is narrowing. Facebook's optimization algorithms, refined over years, are also more efficient at finding users likely to convert, so compare cost per qualified result in your own accounts rather than CPM or CPC alone.
Why can Reddit CPMs run lower than Facebook's?
Where Reddit CPMs have come in below Meta's, the platform has typically had fewer advertisers competing in its auction, particularly in niche communities, and its auction tends to produce lower prices for advertisers who create engaging, community-native content that earns high click-through rates. That is not a guarantee: Reddit's ad prices rose about 40% year over year in Q2 2026 versus 12% for Meta (company filings), and in Q1 2026 B2B awareness campaigns Refine Labs saw Reddit at $9.33 CPM against $4.19 on Meta.
How does targeting compare?
Facebook's targeting strengths
Facebook offers the most comprehensive targeting in digital advertising:
Demographic targeting: Age, gender, education level, job title, income bracket, relationship status, life events, and hundreds of interest categories built from user behavior across Facebook, Instagram, and the broader Meta ecosystem.
Behavioral targeting: Purchase behavior, device usage, travel patterns, and engagement with specific content types across Meta's properties.
Custom audiences: Upload customer lists, create website visitor audiences from the Meta Pixel, app user audiences, and engagement audiences from Facebook and Instagram interactions. Facebook's pixel is installed on millions of websites, giving it the largest behavioral dataset of any ad platform.
Lookalike audiences: Facebook's lookalike modeling benefits from the largest user base of any social platform, producing highly refined audience matches even from small source audiences.
Reddit's targeting strengths
Reddit's targeting is built around its unique community structure:
Community targeting: Community targeting shows ads to people who joined, viewed or visited specific subreddits in the last 28 days, and the ads can appear anywhere those users browse. Joining a community is a self-declared interest signal that other platforms' interest categories only approximate.
Interest and keyword targeting: Reddit can target users based on the topics they engage with and the specific content they have recently interacted with, providing contextual relevance that Facebook's interest categories approximate but cannot match.
Reddit Pixel and retargeting: While newer and less mature than Meta's pixel, Reddit's retargeting capabilities are functional and improving rapidly. Custom audiences and lookalike modeling are available.
Targeting verdict
Facebook wins on breadth and sophistication of targeting options. Reddit wins on the depth and authenticity of interest signals through community targeting. For reaching broad demographics, Facebook is superior. For reaching users with genuine, self-declared interest in specific topics, Reddit is often more precise.
How do ad formats compare?
Facebook ad formats
Facebook offers the widest variety of ad formats across its ecosystem:
- Image ads, video ads, carousel ads, collection ads
- Stories ads (full-screen vertical), Reels ads
- Instant Experience (full-screen mobile landing pages)
- Dynamic product ads with catalog integration
- Lead generation forms with instant fill
- Messenger ads for conversational marketing
Reddit ad formats
Reddit's format options are more focused:
- Promoted text posts
- Image ads
- Video ads
- Carousel ads
- Conversation ads (placed within comment threads)
Format comparison analysis
Facebook's format diversity gives advertisers more creative flexibility and more touchpoints across the user journey. The shopping-specific formats (dynamic product ads, collection ads) are particularly strong for e-commerce.
Reddit's formats are fewer but uniquely effective within the Reddit context. Promoted text posts, which have no equivalent on Facebook, often outperform image ads on Reddit because they blend seamlessly with organic content. Conversation ads, placed within active discussions, offer contextual relevance that no Facebook format can match.
How does audience quality compare?
Engagement depth
How the platforms compare on engagement:
- Average web visit duration (Similarweb estimates, Sept 2026): reddit.com about 5.6 minutes vs facebook.com about 10.3 minutes
- Content engagement rate: not comparable; the platforms define engagement differently and neither publishes a benchmark
- Comment quality: Reddit comments are typically longer and more substantive
This deeper engagement translates to more meaningful brand interactions. A user who reads your Reddit promoted post for 30 seconds and engages with comments has formed a stronger brand impression than a user who scrolls past your Facebook image ad in 1-2 seconds.
Purchase intent signals
Facebook users are generally in social browsing mode, interacting with friends and consuming entertainment. Reddit users are often in information-seeking mode, actively researching products, seeking recommendations, and evaluating options.
This intent difference is a reason to test Reddit, not proof that it converts better, because conversion rates depend on intent, offer and funnel stage. In Metadata's 2025 B2B data, Google Ads turned 1.9% of clicks into leads versus 5.9% on LinkedIn and 2.6% on Facebook, and we found no method-disclosed Reddit benchmark, so compare conversion rates in your own accounts instead of assuming which channel converts better. Facebook's optimization may also deliver more total conversions due to its larger scale and more mature algorithms.
Audience trust
Reddit communities are known for authentic, unfiltered opinions. When your brand earns positive engagement on Reddit, it carries more trust weight than equivalent engagement on Facebook because Redditors are perceived as more skeptical and harder to impress.
When should you choose Reddit Ads?
Choose Reddit when:
- You are targeting niche interest groups or professional communities
- Your product requires education or explanation before purchase
- You have limited budget and want to test paid reach in specific communities
- You want to build authentic brand trust in addition to driving conversions
- Your audience is active in identifiable subreddits
- You are running B2B lead generation campaigns
- You want to complement organic Reddit engagement with paid amplification
When should you choose Facebook Ads?
Choose Facebook when:
- You need maximum audience reach and scale
- Your product is visually driven and benefits from rich media formats
- You rely heavily on retargeting and dynamic product ads
- You need sophisticated attribution and optimization tools
- You are running large-scale e-commerce campaigns with catalog integration
- You want full-funnel campaign architecture with automated optimization
- You need to reach audiences over 55 or in regions with low Reddit penetration
How do you use both platforms together?
The most effective strategy for many brands combines both platforms, leveraging each one's strengths:
Funnel-based allocation
Reddit (top/mid funnel): Use for awareness campaigns, community engagement, and niche audience targeting. Reddit excels at introducing your brand to relevant audiences and building trust through authentic content.
Facebook (mid/bottom funnel): Use for retargeting Reddit-engaged audiences, dynamic product remarketing, conversion optimization, and lookalike scaling. Facebook excels at converting warm audiences into customers.
Budget allocation model
For a $10,000 monthly combined budget, GrowReddit typically recommends:
| Platform | Allocation | Purpose |
|---|---|---|
| Reddit Ads | $4,000 (40%) | Awareness, community targeting, B2B leads |
| Facebook Ads | $6,000 (60%) | Retargeting, conversion, e-commerce |
Adjust based on your specific business model. B2B companies often allocate more to Reddit (50-60%), while e-commerce companies may favor Facebook (60-70%).
Cross-platform audience building
- Drive traffic from Reddit Ads to your website
- Capture these visitors with the Meta Pixel
- Create Facebook retargeting audiences from Reddit-sourced traffic
- Build Facebook lookalike audiences from your best Reddit-sourced converters
- Use Reddit for continued top-of-funnel replenishment
This creates a sustainable acquisition engine where Reddit efficiently fills the top of the funnel and Facebook efficiently converts at the bottom.
Need help optimizing your ad spend across platforms? GrowReddit builds multi-platform advertising strategies that combine Reddit's community targeting with other channels' conversion strengths. Get a free cross-platform ads assessment to optimize your advertising budget allocation.