Yenisei

Yenisei Free

An experimental Yenisei model at a nominal price

Text

Images

Tools

Type: Chat
Context: 131K tokens
Russian: high
Input price: 0,01 ₽ / 1M tokens
Output price: 0,01 ₽ / 1M tokens
Release date: September 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-free",
  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 Free is an experimental model in the Yenisei lineup offered at a nominal price. It is built on open models, which we use as the foundation for developing our own. Free is a convenient way to get to know the service and test an idea without thinking about budget. It holds a conversation in Russian, answers without lengthy deliberation, and understands text and images: screenshots, photos, diagrams. It is enough for everyday questions, short texts and first experiments; when a task gets harder, just change the model name in the request to Yenisei 100 or Yenisei Max. The model is experimental, so its speed and availability may vary.