Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) vs Claude Sonnet 5 (Non-reasoning, High Effort)

Anthropic · Anthropic · catalog 2026-09-14

Claude Sonnet 5 (Non-reasoning, High Effort) beats Claude Sonnet 5 (Adaptive Reasoning, Medium Effort): cheaper ($1.54 vs $1.54/M) and at least as smart (index 28.9 vs 28.4).
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort)Claude Sonnet 5 (Non-reasoning, High Effort)
Speed (tok/s)57.8 measured57.5 measured
Blended $/M$1.54 derived$1.54 derived
Intelligence index28.4 measured28.9 measured
TTFT (ms)124 measured114 measured
Context——
Coding indexnot measured for both
Agentic indexnot measured for both

Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) card · Claude Sonnet 5 (Non-reasoning, High Effort) 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.