DeepSeek V4 Flash Vision (Reasoning, Max Effort) vs GPT-5.6 Luna (xhigh)

DeepSeek · OpenAI · catalog 2026-09-14

Trade-off: GPT-5.6 Luna (xhigh) is cheaper ($0.174 vs $0.227/M); DeepSeek V4 Flash Vision (Reasoning, Max Effort) scores higher on intelligence (35 vs 34.8).
DeepSeek V4 Flash Vision (Reasoning, Max Effort)GPT-5.6 Luna (xhigh)
Speed (tok/s)217.1 measured108.3 measured
Blended $/M$0.227 derived$0.174 derived
Intelligence index35 measured34.8 measured
TTFT (ms)107 measured4713 measured
Context——
Coding index65 measured69 measured
Agentic index48 measured4 measured

DeepSeek V4 Flash Vision (Reasoning, Max Effort) card · GPT-5.6 Luna (xhigh) 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.