DeepSeek V4 Pro

What is DeepSeek V4 Pro?

DeepSeek V4 Pro is the DeepSeek frontier model with a 1,000,000-token context window context window, released 2026-07. Tagline: DeepSeek's flagship tier — benched head-to-head against its own cheap Flash.. Official source: api-docs.deepseek.com.

Pricing detail. DeepSeek's flagship tier, benched on `deepseek-v4-pro` via api.deepseek.com — the exact same 50 one-shot prompts, skill-infused game prompt and pipeline as the V4 Flash 0731 run, so the two runs are directly comparable side by side. DeepSeek's own line on the 0731 Flash refresh is that its post-training now beats the older V4-Pro-Preview — this run tests the current Pro against that claim.

How I use it inside the Agent OS. Benched on all 50 GoldieBench tasks via api.deepseek.com with the same pipeline as the Flash 0731 run, then published as a live side-by-side: goldiebench.com/vs-live/deepseek-flash-vs-pro.html loads both builds of every task in twin panes.

What I built with DeepSeek V4 Pro

Every model on Goldie Bench gets the same fixed prompt set — one shot, single HTML file out — and I score the result 0–10 inside the Agent Operating System. Here's what DeepSeek V4 Pro shipped on the bench: 50 one-shot demos across 1,000,000-token context window of context. Of those, 0 are scored against the field with my honest 0–10 from the source guides at agentos.guide.

Best for

• Checking whether DeepSeek's pro tier is worth the premium over Flash 0731
• Hard single-shot builds where extra reasoning depth may pay off

Compare DeepSeek V4 Pro against every other model

Every head-to-head featuring DeepSeek V4 Pro. Verdicts shown for scored pairs.

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Quick pill index

Direct comparisons against every other scored model on the bench:

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DeepSeek V4 Pro — frequently asked