Model Selection Guide
AI Model Selection Guide (2026) - Choose the Right LLM for Your Business
AI model selection: compare GPT-4 ($30/1M input), Claude ($15/1M), Gemini ($1.25/1M), Llama (free self-host). Consider: cost, latency, context window, fine-tuning, data privacy, vendor lock-in.
Direct answer
AI model selection: compare GPT-4 ($30/1M input), Claude ($15/1M), Gemini ($1.25/1M), Llama (free self-host). Consider: cost, latency, context window, fine-tuning, data privacy, vendor lock-in.
Fast path
- Cost: compare per-token pricing, volume discounts, caching options.
- Performance: benchmark on your tasks (accuracy, quality, consistency).
- Latency: test response time for your use case (streaming, batch).
Guide toolkit
Copy or download the checklist
Turn this guide into a working brief for LLM Cost Calculator.
Implementation Steps
- Cost: compare per-token pricing, volume discounts, caching options.
- Performance: benchmark on your tasks (accuracy, quality, consistency).
- Latency: test response time for your use case (streaming, batch).
- Context: match context window to your needs (128K, 1M tokens).
- Fine-tuning: evaluate custom model needs vs prompt engineering.
Frequently Asked Questions
How to choose between AI models?
Choose AI models by: cost (per-token pricing), performance (task-specific benchmarks), latency (response time needs), context window (document length), fine-tuning options, data privacy requirements. Test top 2-3 models on your actual use cases.
Which AI model is cheapest?
Cheapest AI models: Gemini Flash ($0.075/1M input), Llama (free self-hosted, pay compute), Claude Haiku ($0.25/1M), GPT-4o-mini ($0.15/1M). For production: compare total cost including latency, quality, and volume.
Related Guides
Use these adjacent playbooks to keep the same workflow connected across discovery, conversion, and execution.
Operations
OpenAI vs Claude vs Gemini Budget Planner
Compare model cost on the same workload shape, not headline pricing, and route traffic with guardrails.
Operations
Prompt Cost Optimization Guide for Developers (2026)
Reduce prompt costs by 40-60% through token reduction strategies: prompt compression, response format optimization, and caching implementation.
Operations
LLM Pricing Sheet 2026
Quick pricing reference for OpenAI, Claude, Gemini, and budget models.
Get weekly AI operations templates
Receive ready-to-use rollout, governance, and procurement templates.
No lock-in setup: if a lead endpoint is not configured, this form falls back to direct email.
Need help implementing this workflow in production?
Request a focused implementation audit for process design, owners, and KPI instrumentation.
- Provider and model split recommendations
- Budget guardrail design by traffic stage
- KPI plan for spend, quality, and conversion