DeepSeek V4.1 Flash (Reasoning, Max Effort) vs GPT-5.6 Sol (medium)

DeepSeek · OpenAI · catalog 2026-09-14

DeepSeek V4.1 Flash (Reasoning, Max Effort) beats GPT-5.6 Sol (medium): cheaper ($0.187 vs $3.08/M) and at least as smart (index 39.5 vs 39.5).
DeepSeek V4.1 Flash (Reasoning, Max Effort)GPT-5.6 Sol (medium)
Speed (tok/s)217.1 measured56.6 measured
Blended $/M$0.187 derived$3.08 derived
Intelligence index39.5 measured39.5 measured
TTFT (ms)113 measured506 measured
Context1049k list—
Coding indexnot measured for both
Agentic indexnot measured for both

DeepSeek V4.1 Flash (Reasoning, Max Effort) card · GPT-5.6 Sol (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.