Definition
Search API pricing models in 2026 fall into three shapes: per-tier (fixed price for fixed query volume, e.g., SerpAPI Starter $25/mo for 1K), credit-based (one credit per call, varying credits per request type, e.g., Scavio $30/mo for 7K credits), and pay-as-you-go (per-call rate, e.g., DataForSEO $0.0006/SERP).
In Depth
Per-tier was the dominant 2010s SaaS shape; it is predictable but waste-prone for variable workloads. Credit-based fits agent workloads where one query might use 1 credit (basic SERP) and another uses 3-5 credits (deep extract or AI Overview). PAYG fits batch workloads where volume is predictable and the team wants no monthly commitment. Verified examples (2026-04): SerpAPI tier-based ($25-275/mo); Scavio credit-based ($30/mo for 7K, $0.0043/credit); DataForSEO PAYG ($50 minimum, $0.0006/SERP standard); Tavily PAYG ($0.008/credit) plus Researcher free tier (1K/mo recurring); Brave hybrid (free $5/mo credits then $5/1K). The right pick is downstream of workload predictability: predictable -> tier; variable -> credit; bulk -> PAYG.
Example Usage
An r/SEO_Experts post compared DataForSEO (PAYG $0.0006/SERP queued) with Scavio (credit-based $0.0043) — the trade-off was raw cost vs real-time + multi-surface. PAYG won the cost line; credit-based won the agent-fit line.
Platforms
Search API Pricing Models (Credit vs PAYG vs Tier) is relevant across the following platforms, all accessible through Scavio's unified API:
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