Using DeepSeek V4 Pro on OpenRouter

Quick Start

1. 1
   Create an account at OpenRouter and generate an API key.
2. 2
   Use the OpenRouter SDK or REST API to call deepseek/deepseek-v4-pro — see the documentation for request format.
3. 3
   You'll be billed $0.44/1M input, $0.87/1M output tokens. See full pricing.

Code Examples

About OpenRouter

OpenRouter provides a unified interface for Large Language Models with better pricing, improved uptime, and no subscription requirements. Route across providers for cost optimization and reliability.

Multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.

Pricing on OpenRouter

Capabilities

About DeepSeek V4 Pro

DeepSeek V4 Pro is the flagship 1.6T parameter (49B activated) Mixture-of-Experts language model with 1M-token context. Features hybrid attention (CSA+HCA) requiring only 27% of inference FLOPs vs DeepSeek-V3.2 at 1M context, Manifold-Constrained Hyper-Connections (mHC), and Muon Optimizer for training stability. Achieves 93.5% on LiveCodeBench, 89.8% on IMOAnswerBench, and 90.1% on MMLU. Supports Non-Think, Think High, and Think Max reasoning modes. Pricing: $1.74/1M input, $3.48/1M output (cache hit: $0.145/1M input). MIT licensed. Pricing note: DeepSeek API docs state that deepseek-v4-pro is currently offered at a 75% discount, extended until 2026/05/31 15:59 UTC.