Agent Search Cost: Free Tier to Production

Agent search API costs range from free (250-1,000 queries/month) to $500+/month at production scale. The cheapest path: start on free tiers, graduate to pay-as-you-go, then negotiate volume pricing. At every stage, the real variable is queries per agent task, not the per-query rate.

Free tier: 0-1,000 queries/month

Provider     | Free queries/mo | Best for
Tavily       | 1,000           | Summarized grounding, Q&A
Exa          | 1,000           | Semantic/concept search
Brave Search | ~1,000          | Raw results ($5 free credits)
Scavio       | 250             | Multi-platform structured JSON
SerpAPI      | 250             | Legacy SERP scraping

Hobby: 1,000-10,000 queries/month ($5-30)

Provider        | 5K queries cost | 10K queries cost
DataForSEO queue| $3.00           | $6.00
Scavio on-demand| $25.00          | $50.00
Scavio $30 plan | $30.00 (7K)     | $30 + $15 overage
Brave Search    | $25.00          | $50.00
Tavily          | $32.00          | $72.00
Exa search      | $28.00          | $60.00
SerpAPI         | $75.00          | $150.00

Production: 50,000+ queries/month

Provider         | 50K queries cost | 100K queries cost
DataForSEO queue | $30              | $60
DataForSEO live  | $100             | $200
Scavio Bootstrap | $100 (28K)       | $250 (85K)
Scavio Growth    | $250 (85K)       | $500 (200K)
Brave Search     | $250             | $500
Exa              | $300             | $600
SerpAPI          | $275 (30K max)   | Custom

The real cost driver: queries per task

A simple agent making 2-3 searches per task costs $0.01-0.015/task. A deep research agent making 50-200 searches per task costs $0.25-1.00/task. The per-query rate matters less than controlling how many queries each agent task consumes. Budget caps and result caching are the highest-leverage optimizations.

Cost optimization patterns

• Result caching: same query within 1 hour gets cached result (saves 30-50% on research agents)
• Budget caps: set max queries per agent task (prevents runaway costs)
• Query dedup: normalize queries before searching (removes near-duplicates)
• Tiered search: use free tiers for validation, paid for production

Scaling decision framework

Under 1K/month: pick the free tier with the best data format for your use case. 1K-10K: Scavio $30/month or DataForSEO pay-as-you-go. 10K-100K: Scavio Bootstrap/Startup or DataForSEO bulk. Above 100K: negotiate custom pricing with 2-3 providers.