GPT-5 (high) vs GPT-5 (medium)

OpenAI · OpenAI · catalog 2026-09-14

GPT-5 (high) beats GPT-5 (medium): cheaper ($1.341 vs $1.341/M) and at least as smart (index 23 vs 22.9).
GPT-5 (high)GPT-5 (medium)
Speed (tok/s)90.9 measured68.9 measured
Blended $/M$1.341 derived$1.341 derived
Intelligence index23 measured22.9 measured
TTFT (ms)5781 measured4323 measured
Context400k list—
Coding indexnot measured for both
Agentic indexnot measured for both

GPT-5 (high) card · GPT-5 (medium) card · 3D observatory

Verdicts use price×intelligence dominance only, and only where both sides are measured; null cells stay null with their provenance (em-dash = not in catalog). Percentile-free by design — this page compares two models, not the field. Generated page — do not hand-edit.