V4 Pro launched April 24, 2026. Been running it on production agents since. Specs Total params: 1.6T (MoE) Active params: 49B Context: 1M tokens (verified) Modes: Think / Non-Think dual License: MIT Pricing: $1.74/1M input, $3.48/1M output API Setup (OpenAI-compatible) client = OpenAI ( base_url = " https://integrate.api.nvidia.com/v1 " , api_key = " <NVIDIA_NIM_KEY> " ) response = client . chat . completions . create ( model = " deepseek-ai/deepseek-v4-pro " , messages = [...] ) Enter fullscreen mode Exit fullscreen mode Real-World Performance Long context tasks : Finally viable at scale (full conversation logs) Thinking mode : 8-15s, much better multi-step planning vs V3 Non-thinking mode : ~2s, fast enough for content pipelines Function calling : More reliable than V3.2 Cost Comparison (per 1M tokens) Model Input Output DeepSeek V4 Pro $1.74 $3.48 Claude Sonnet 4.6 $3.00 $15.00 GPT-4o $2.50 $10.00 For agent workloads (lots of input, structured output), V4 Pro is the new sweet spot.…