A moving label
“Frontier” is not a stable API contract or a guarantee of correctness. Provider catalogs, capabilities, pricing, and availability change. Record the exact model version and evaluation date for any comparison.
Choose for the actual task
Evaluate correctness, context needs, tool behavior, latency, cost, data handling, and failure modes on representative work. Do not treat one benchmark score as a universal recommendation. Provider claims and independent evaluations serve different purposes and should be labeled accordingly.
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