DeepSeek
DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoning, and agent workflows....
Available via OpenRouter: create a free account at openrouter.ai, generate an API key, then call this model as deepseek/deepseek-v4-flash-0731 through the OpenRouter API (or any OpenRouter-compatible app/client).
Official: openrouter.ai/deepseek/deepseek-v4-flash-0731