Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) vs GPT-6 Astra (medium)

Anthropic · OpenAI · catalog 2026-09-14

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) beats GPT-6 Astra (medium): cheaper ($3.85 vs $7.7/M) and at least as smart (index 49.7 vs 49.7).
Claude Opus 5 (Adaptive Reasoning, Xhigh Effort)GPT-6 Astra (medium)
Speed (tok/s)49.3 measured50 measured
Blended $/M$3.85 derived$7.7 derived
Intelligence index49.7 measured49.7 measured
TTFT (ms)2202 measured44 measured
Context——
Coding index77 measured77 measured
Agentic index56 measured46 measured

Claude Opus 5 (Adaptive Reasoning, Xhigh Effort) card · GPT-6 Astra (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.