HR API Cost Ranking
Every model ranked by cost for a typical HR workload: 200 tasks/day, 1,500 input / 500 output tokens per task.
Top Picks by Company Size
Small Business / Startup (under $10/mo)
Gemini 2.5 Flash-Lite$1.35/mo
DeepSeek V4 Flash$2.13/mo
GPT-oss 20B$2.18/mo
Mid-Market HR Team ($10-75/mo)
GPT-4o mini$4.35/mo
Mistral Small 4$4.35/mo
Claude Haiku 4.5$9.57/mo
Enterprise / Staffing Firm ($75-300/mo)
Claude Sonnet 4.6$43.56/mo
Gemini 2.5 Pro$19.64/mo
GPT-5$144.21/mo
Strategy: Tiered HR AI Pipeline
HR tasks vary from simple (resume keyword matching) to complex (legal policy review). Use a tiered pipeline to route tasks by complexity.
Tiered HR Pipeline (500 tasks/day)
Tier 1: 65% resume scoring/FAQ → Gemini Flash Lite ($0.075/$0.30)$7.76/mo
Tier 2: 25% job descriptions/survey summaries → GPT-4o mini ($0.15/$0.60)$7.92/mo
Tier 3: 10% policy compliance/complex analysis → Claude Sonnet 4.6 ($3/$15)$23.76/mo
Total with pipeline$39.44/mo (vs $118.80 on Sonnet for all)
This tiered approach saves 67% compared to using a premium model for everything. Route resume scoring and FAQ responses to budget models, and reserve premium models for policy compliance and complex analysis.
HR-Specific Considerations
- EEOC compliance: AI screening must not discriminate based on protected characteristics. Use structured prompts that evaluate qualifications only. Audit model outputs for bias.
- Data privacy: Resumes contain PII (names, addresses, employment history). Ensure your provider signs a DPA and offers data processing agreements. Consider anonymizing resumes before sending to the API.
- Employer brand: Job descriptions represent your company. Premium models produce more engaging, inclusive job posts that attract diverse candidates.
- Volume patterns: Resume screening spikes during hiring surges. Budget models handle volume cost-effectively; scale to premium only for final-round evaluation.
- Legal nuance: Employment law varies by jurisdiction. For policy compliance and legal analysis, use premium models with stronger reasoning to catch subtle issues.
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