Model Selection

What is the difference between mid-tier and frontier models in practice?

Frontier: Claude Opus 4.7, GPT-5, Gemini 2.5 Pro, o3 (2026 flagships). Best-in-class on complex tasks; premium pricing. Mid-tier: Claude Sonnet 4.6, GPT-5 mini, Gemini 2.5 Flash, Haiku 4.5. Handle most enterprise workloads well at ~5-10x lower cost. Rule of thumb: default to mid-tier, escalate to frontier only for tasks the mid-tier demonstrably underperforms.

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