DeepSeek V4 Pro performance data on Rival is based on blind head-to-head community voting. All vote data is part of Rival's open dataset of 21,000+ human preference judgments across 200+ AI models. Model responses are curated from 53 challenges.
We built DeepSeek V4 Pro a whole page. Gave it the spotlight. And now, in the spirit of fairness, here are models that would like a word.
DeepSeek V4 Pro performance data on Rival is based on blind head-to-head community voting. All vote data is part of Rival's open dataset of 21,000+ human preference judgments across 200+ AI models. Model responses are curated from 53 challenges.
We built DeepSeek V4 Pro a whole page. Gave it the spotlight. And now, in the spirit of fairness, here are models that would like a word.
DeepSeek V4 Pro is a large-scale Mixture-of-Experts model with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. Designed for advanced reasoning, coding, and long-horizon agent workflows, with strong performance across knowledge, math, and software engineering benchmarks. Built on the same architecture as V4 Flash, it introduces a hybrid attention system for efficient long-context processing and supports multiple reasoning modes.
Use DeepSeek V4 Pro in your applications via the OpenRouter API. Copy the code below to get started.
import requests
response = requests.post(
"https://openrouter.ai/api/v1/chat/completions" ,
headers={
"Authorization""Bearer $OPENROUTER_API_KEY" : ,
"Content-Type""application/json" :
},
json={
"model""deepseek/deepseek-v4-pro" : ,
"messages""role""user""content""Hello!" : [{: , : }]
}
)
print(response.json())Replace $OPENROUTER_API_KEY with your API key from openrouter.ai/keys
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
53 outputs from DeepSeek V4 Pro
DeepSeek V4 Pro is a large-scale Mixture-of-Experts model with 1.6T total parameters and 49B activated parameters, supporting a 1M-token context window. Designed for advanced reasoning, coding, and long-horizon agent workflows, with strong performance across knowledge, math, and software engineering benchmarks. Built on the same architecture as V4 Flash, it introduces a hybrid attention system for efficient long-context processing and supports multiple reasoning modes.
Use DeepSeek V4 Pro in your applications via the OpenRouter API. Copy the code below to get started.
import requests
response = requests.post(
"https://openrouter.ai/api/v1/chat/completions" ,
headers={
"Authorization""Bearer $OPENROUTER_API_KEY" : ,
"Content-Type""application/json" :
},
json={
"model""deepseek/deepseek-v4-pro" : ,
"messages""role""user""content""Hello!" : [{: , : }]
}
)
print(response.json())Replace $OPENROUTER_API_KEY with your API key from openrouter.ai/keys
Unique words vs. total words. Higher = richer vocabulary.
Average words per sentence.
"Might", "perhaps", "arguably" per 100 words.
**Bold** markers per 1,000 characters.
Bullet and numbered list items per 1,000 characters.
Markdown headings per 1,000 characters.
Emoji per 1,000 characters.
"However", "moreover", "furthermore" per 100 words.
53 outputs from DeepSeek V4 Pro