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: Claude Opus 5.5, GPT-6 Astra, Claude Fable 5.1