Frontier Reasoning
Your answers favor maximum capability for hard reasoning, coding, and agentic work — cost is secondary to getting the task done.
Best for: Hard multi-step reasoning, Agentic engineering workflows, Tasks where a failed run costs more than extra tokens
Watch out: Frontier input rates are often 10–25× budget tiers. Confirm the task truly needs frontier quality before defaulting to the flagship.
Shortlist examples: GPT-5.6 Sol, Claude Opus 5, Gemini 3.1 Pro