GPT-5 vs Claude Sonnet 4.5 — Benchmarks & Verdict (2026)

What this reference supports

GPT-5 vs Claude Sonnet 4.5 — Benchmarks & Verdict (2026): This reference explains the decision in practical terms: what the options are, which constraints matter, how trade-offs differ, and what should be validated before implementation.

GPT-5 vs Claude Sonnet 4.5 — Benchmarks & Verdict (2026): Use the guidance to build a shortlist rather than accept a universal winner. Evidence from benchmarks, product documentation, and implementation reports must be interpreted within its protocol, date, and workload scope.

GPT-5 vs Claude Sonnet 4.5 — Benchmarks & Verdict (2026): The safest next step is a representative evaluation with explicit success criteria, failure cases, cost and latency limits, privacy requirements, and human review where consequences are material.