Enterprise SEO APIs from Ahrefs and SEMrush cost $100-400/month, pricing out solo developers and small teams. But several APIs deliver solid keyword, SERP, and backlink data for under $50/month. We compared five budget-friendly options on data quality, endpoint coverage, and actual cost per query for typical SEO workflows.
Scavio offers the best value under $50/month with $30/mo covering 7K credits across SERP data, People Also Ask, and related keyword extraction in structured JSON ready for programmatic SEO pipelines.
Full Ranking
Scavio
Programmatic SEO workflows needing SERP + keyword data in one API
- $30/mo gets 7K queries covering SERP and keyword research
- Structured JSON output for programmatic SEO
- People Also Ask and related searches included
- 250 free credits to evaluate before paying
- No backlink index
- No historical SERP data archive
- Keyword volume estimates less granular than DataForSEO
DataForSEO
High-volume keyword research with granular cost control
- Cheapest per-query cost for keyword volume data
- Massive endpoint coverage including backlinks
- No monthly commitment required
- Historical SERP data available
- Complex API with steep learning curve
- No free tier to test
- Response structure varies by endpoint
Serper
Direct Google SERP data at the $50 price ceiling
- High-fidelity Google results
- Simple clean API
- Fast response times
- Right at the $50 budget ceiling
- Only 5K queries vs Scavio's 7K
- Limited to SERP data only, no keyword metrics
ValueSERP
Low-volume SERP monitoring on a tight budget
- Affordable entry at $25/mo
- Supports Google, Bing, Yahoo
- Location and device targeting
- Only 2.5K queries at base tier
- No keyword volume or difficulty data
- Slower response times than competitors
SpaceSERP
Simple SERP tracking without extras
- Good value at $29/mo for 5K queries
- Clean JSON responses
- Supports multiple search engines
- No keyword research capabilities
- Limited documentation
- Smaller community and fewer integrations
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Monthly cost | $30 | ~$30 (pay-as-you-go) | $50 |
| Queries included | 7,000 | ~50K at $0.0006 | 5,000 |
| SERP data | Yes | Yes | Yes |
| Keyword metrics | PAA + Related | Volume + Difficulty | No |
| Backlinks | No | Yes | No |
| Free tier | 250 credits | None | 100 searches |
Why Scavio Wins
- Best balance of query volume (7K) and price ($30/mo) for SERP + keyword data under $50
- Structured JSON output eliminates parsing overhead that DataForSEO's complex responses require
- DataForSEO wins on raw per-query cost and backlink coverage if you need those endpoints
- DataForSEO also wins for historical SERP data which Scavio does not yet offer
- Serper wins if you need exact Google result fidelity for rank tracking