Compare RankParse vs
RankParse vs Serper: which API does your agent actually need?
Serper is a fast, cheap Google SERP scraper whose credits expire in 6 months. RankParse is a backlink and domain data API whose credits never expire. Different data, different clock.
TL;DR
Two prepaid-credit models, one expiry clause
As of September 2026, Serper sells prepaid packs from $50 for 50,000 searches (~$1 per 1K) — cheap, but credits expire 6 months after purchase. RankParse starts at $10 for 1,000 credits, and they sit in your account until you use them.
| Scenario | RankParse | Serper |
|---|---|---|
| Try it out | 100 credits free, no card | 2,500 searches free, no card |
| Smallest paid entry | $10 (never expires) | $50 pack (expires in 6 months) |
| Bursty usage: one big job, then quiet | Leftover credits keep their value | Leftover credits gone after 6 months |
The rank-tracking math nobody runs
A lot of agent builders reach for a SERP API to track keyword rankings. Tracking 100 keywords daily is roughly 3,000 SERP checks a month — about $3/mo at Serper's ~$1 per 1K rate, but behind a $50 minimum pack that expires in 6 months. And SERP scraping got structurally more expensive after Google removed the num=100 parameter in late 2025.
RankParse rank tracking is a 0-credit endpoint: it reads stored ranking snapshots from Google Search Console, Bing Webmaster, and Yandex Webmaster. Your own rankings, straight from the source, without scraping a single SERP. Cost: $0.
What each tool covers
| RankParse | Serper | |
|---|---|---|
| Backlinks endpoint | ||
| Referring domains | ||
| Anchor text distribution | ||
| Domain authority score | ||
| Tech stack detection | ||
| Rank tracking without scraping (0 credits) | ||
| MCP server on the free tier | ||
| Credits never expire | ||
| Free tier (no card) | ||
| Pay-per-use credits (no subscription) | ||
| Live Google SERP results | ||
| 1–2s SERP response latency |
The API call comparison
Serper for what Google shows right now. RankParse for what the web says about a domain.
# Serper: live Google SERP, prepaid credits ($50 min pack, expire in 6 months)
curl -X POST "https://google.serper.dev/search" \
-H "X-API-KEY: YOUR_SERPER_KEY" \
-H "Content-Type: application/json" \
-d '{"q": "best seo api"}'
# RankParse: backlink and domain data, credits never expire
curl "https://api.rankparse.com/v1/backlinks?domain=stripe.com&limit=100" \
-H "X-API-Key: rp_your_key"
# Cost: 2 credits ($0.008 at Growth tier). Credits never expire.The "use both" pattern for agent builders
These two APIs don't compete for the same call. A well-equipped SEO research agent uses Serper to see what ranks for a query, then RankParse to explain why: backlink profiles, referring domains, authority scores, and tech stack for each ranking domain.
RankParse ships as an MCP server with 23 read-only SEO tools, so Claude, ChatGPT, Cursor, and Claude Code can call it with zero integration code — on the free tier, no card. See also our head-to-head with SerpAPI and DataForSEO.
When to choose Serper
Serper is the right tool when:
- You need live Google results with 1–2 second latency
- You're building search into an agent and only care about what ranks right now
- You want the cheapest mainstream Google SERP option and will burn credits within 6 months
- Your framework's examples already wire in Serper and you want zero friction
RankParse is the right tool when your agent or app needs backlinks, referring domains, domain authority, tech stack, or rank tracking without scraping — data Serper simply doesn't have.
Common questions
Is RankParse a SERP API like Serper?
No. Serper scrapes live Google results. RankParse is a stored-data API: backlinks, referring domains, domain authority, and tech stack, built from open web datasets like Common Crawl. If you need live SERPs, use Serper. If you need to know who links to a domain or how authoritative it is, that's RankParse.
Do RankParse credits expire like Serper's?
No. Serper credits expire 6 months after purchase, so a bursty agent workload loses whatever it didn't burn. RankParse credits never expire: buy $10 once and use it over two years if that's your pace.
Can I track keyword rankings without scraping Google?
Yes. RankParse's rank tracking endpoints are free (0 credits) and read stored ranking snapshots from Google Search Console, Bing Webmaster, and Yandex Webmaster. No SERP scraping, so it's immune to the scraping-cost squeeze that followed Google removing the num=100 parameter in late 2025.
Which works better with Claude, ChatGPT, and MCP agents?
Serper is the default in many LangChain examples for web search. RankParse is MCP-native: an OAuth MCP server for Claude and ChatGPT on the web, plus an API-key MCP server for Claude Code and Cursor, exposing 23 read-only SEO tools. For agents that need backlink or domain intelligence, RankParse is the MCP-first option; Serper doesn't have that data at all.
Can I use Serper and RankParse together in one agent?
Yes, and it's a common pattern: Serper for live Google results (what ranks right now), RankParse for domain intelligence (who links to it, how authoritative it is, what it's built on). Both are prepaid-credit APIs with a free tier and no card required, so the combined stack has no subscription.
See the pricing difference at your volume
Drag the slider to your monthly request volume.
RankParse costs assume avg 2 credits/request (Growth or Scale pack pricing). Competitor figures are minimum plan costs. Actual usage may be higher. Verify at source before making decisions.
Credits that outlive the 6-month clock.
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