GPT-5.4 nano (medium) vs o3

OpenAI · OpenAI · catalog 2026-09-14

Trade-off: GPT-5.4 nano (medium) is cheaper ($0.179 vs $1.55/M); o3 scores higher on intelligence (20.2 vs 20).
GPT-5.4 nano (medium)o3
Speed (tok/s)161.5 measured107 measured
Blended $/M$0.179 derived$1.55 derived
Intelligence index20 measured20.2 measured
TTFT (ms)594 measured569 measured
Context—200k list
Coding indexnot measured for both
Agentic indexnot measured for both

GPT-5.4 nano (medium) card · o3 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.