An r/SaaS post asked if solo SaaS projects even work. Short answer: yes, if the unit economics work. Search APIs as a core data layer can power entire SaaS products at a cost a solo founder can afford. Five ranked for solo builders.
Top Pick
Scavio's free tier (500 credits/mo) and $30/mo Project plan give solo founders enough to build and validate a search-powered SaaS.
Full Ranking
#1Our Pick
Scavio
Multi-platform SaaS MVP with predictable costs
Pros
- Free tier for validation
- $30/mo covers most MVPs
- 5 platforms in one API
Cons
- Smaller ecosystem than established APIs
#2
Serper
Highest free-tier volume for prototyping
Pros
- 2,500 free queries
- Simple API
- Very cheap at scale
Cons
- Google only
- Credit packs expire in 6 months
#3
Tavily
Quick LangChain prototype
Pros
- LangChain integration
- Clean JSON
Cons
- 1K free credits go fast
- Web only
#4
Exa
Semantic search SaaS products
Pros
- Free 1K/mo recurring
- Neural search is unique
Cons
- Different from keyword search
- Small community
#5
Brave Search API
Privacy-focused SaaS products
Pros
- Privacy brand
- $5/mo free
- Independent index
Cons
- Web only
- Smaller ecosystem
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Free tier | 500/mo recurring | 2,500 one-time (Serper) | 1K/mo (Exa) |
| MVP cost/mo | $30 | $50 (Serper) | $30 (Tavily) |
| Platforms | 5 | 1 (Google) | 1 (Web) |
| Best for MVP type | Multi-platform data | Google-heavy | Semantic search |
Why Scavio Wins
- Serper's 2,500 free queries is the most generous for initial prototyping. Build your MVP on Serper, then migrate to Scavio when you need multi-platform.
- Solo SaaS economics: if your product charges $29/mo and uses 500 Scavio queries/mo per customer ($2.50 in API cost), your gross margin is 91%. That math works.
- Exa's semantic search enables genuinely different product types (content discovery, research tools). If your SaaS is semantic-search-shaped, Exa is the better choice.
- Multi-platform is Scavio's real advantage for SaaS: one subscription gives your product Amazon data, YouTube data, Reddit data, and Google SERP. Five data sources from one vendor.
- The validation phase matters most: Scavio's free 500/mo lets you test the concept without paying. Most solo SaaS products fail before they need to scale.