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Apollo vs Sixtyfour

People Search

Apollo
Apollo
85
VS
Sixtyfour
85
Sixtyfour
Metric Apollo Sixtyfour
Category People Search People Search
Pricing Freemium Pay-as-you-go
Auth API Key API Key
Format JSON JSON
Bot Blocking None None
OpenAPI Spec No No
Credit Card Not required Not required
Rate Limit Free: 50 req/min, 600/day. Basic/Pro: 200 req/min, 2,000/day. Enrichment endpoints: 100/min with 10/sec burst. 500 req/min per API key
Score Component Apollo Sixtyfour
Base +50 +50
OpenAPI Spec 0 (No) 0 (No)
Auth +10 (API Key) +10 (API Key)
Format +10 (JSON) +10 (JSON)
Bot Blocking +10 (None) +10 (None)
No CC +5 (Yes) +5 (Yes)
Free 0 (No) 0 (No)
Total 85 85
Apollo Sixtyfour
Pros
  • + Massive dataset (210M+ contacts, 30M+ companies) with structured JSON responses — agents get rich firmographic and demographic data in a single call
  • + People Search endpoint does not consume credits, so agents can search and filter freely before committing credits to enrichment
  • + Simple API Key auth via x-api-key header and straightforward REST endpoints make integration trivial for any agent framework
  • + Flexible struct parameter lets agents define exactly which fields to return in natural language — no rigid schema to map
  • + Async endpoints with polling prevent timeout issues on long-running enrichment (P95 ~5 min), critical for agent orchestration
  • + Significantly higher enrichment coverage than Apollo/BuiltWith — surfaces data on even tiny businesses with a few employees
Cons
  • - Credit-based pricing adds complexity for agents — different actions cost different credit amounts (1 for email, 5 for mobile), requiring agents to track budget
  • - No official OpenAPI spec, so agents can't auto-discover endpoints or generate typed clients without manual setup
  • - No public pricing or free tier — agents can't self-provision, requires sales contact to get started
  • - Sync enrichment calls can take up to 15 minutes; agents must use async+polling pattern or risk HTTP timeouts
Badges
API KeyFreemiumJSONBot Blocking: NoneNo CCpeople-searchcompany-enrichmentpeople-enrichmentprospectingemail-finderlead-generationb2b-data
API KeyPay-as-you-goJSONBot Blocking: NoneNo CCpeople-searchcompany-enrichmentlead-enrichmentemail-finderphone-finderasync-apiai-agents

Apollo Integration

example.py
import requests
headers = {    "Content-Type": "application/json",    "Cache-Control": "no-cache",    "x-api-key": "YOUR_API_KEY"}
# Enrich a person by emailresp = requests.post(    "https://api.apollo.io/api/v1/people/match",    headers=headers,    json={"email": "tim@apollo.io", "reveal_personal_emails": False})person = resp.json()["person"]print(person["name"], person["title"], person["organization"]["name"])

Sixtyfour Integration

example.py
import requests
headers = {    "x-api-key": "YOUR_API_KEY",    "Content-Type": "application/json"}
# Enrich a leadresp = requests.post("https://api.sixtyfour.ai/enrich-lead", headers=headers, json={    "lead_info": {        "name": "Jane Smith",        "company": "Acme Corp",        "linkedin": "https://linkedin.com/in/janesmith"    },    "struct": {        "email": "Work email address",        "phone": "Direct phone number",        "title": "Current job title"    }})print(resp.json()["structured_data"])