Yenisei

Yenisei Code

Our model for development: code, refactoring, review

Text

Tools

Type: Chat
Context: 1M tokens
Russian: high
Input price: 2,8 ₽ / 1M tokens
Output price: 11,2 ₽ / 1M tokens
Release date: August 2026

chat/completions

import OpenAI from "openai"
const client = new OpenAI({
  baseURL: "https://api.yenisei.ru/v1",
  apiKey: process.env.YENISEI_API_KEY,
})
const stream = await client.chat.completions.create({
  model: "yenisei-code",
  messages: [{ role: "user", content: "Hi!" }],
  stream: true,
})
for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? "")
}

About the model

Yenisei Code is our model for people who write code. It generates functions and modules, completes and rewrites existing code, explains unfamiliar snippets and points out where a bug has crept in, across dozens of languages, from Python and TypeScript to Go, Rust and SQL. A context of up to a million tokens fits several files at once or an entire project. The model calls tools and is suited to assistants in the IDE and CI: run the tests, assemble a patch, parse a build log. It answers quickly and to the point, with billing in rubles.