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Claude Sonnet 5.5 API in Russia — no VPN, no foreign card

Claude Sonnet 5.5 is, in Anthropic's words, the best mix of speed and intelligence in the current Claude lineup; for coding and daily work. Connect through RuAPI: pay in USDT from $5, no subscription, your key right after sign-up.

Original Anthropic model Pay in USDT / USDC from $5 No VPN OpenAI-compatible API Anthropic API (/v1/messages)
Get an API keyAll prices
from openai import OpenAI

client = OpenAI(
    api_key="sk-...",
    base_url="https://www.ruapi.ai/v1",
)

resp = client.chat.completions.create(
    model="claude-sonnet-5-5",
    messages=[{"role": "user", "content": "Hello"}],
)

print(resp.choices[0].message.content)

Replace sk-... with a key from the RuAPI Console — the model claude-sonnet-5-5 is already set.

Claude Sonnet 5.5 API price

Current price in US dollars — the same as on the pricing page. Pay in USDT, pay as you go, no subscription.

modelinput $ / 1Moutput $ / 1M
claude-sonnet-5-5
$2.40
cache read $0.12
$12.00

Input is the regular price of input tokens, “cache read” is the price of input tokens served from the prompt cache, output is the price of output tokens. The price in your account may be lower.

All models and prices →

What is Claude Sonnet 5.5

Sonnet 5.5 sits in the middle of the Claude lineup: Opus 5.5 and Fable 5.1 above it for harder work, Haiku 5.5 below it for fast high-volume tasks. Pick it when you need both strong quality and quick responses.

It accepts text, images and PDF, supports tool use and structured outputs, and thinks by default (effort high). In Cline, connect it through the Anthropic provider to get prompt caching; other tools and SDKs can use the OpenAI-compatible base URL https://www.ruapi.ai/v1.

Claude Sonnet 5.5 specs

DeveloperAnthropic
Model ID in the RuAPI APIclaude-sonnet-5-5
Context window1M tokens
Max output128K tokens
Inputtext, images, PDF
Outputtext
Reasoning modeyes
Tool callingyes
Prompt cachingyes
Statusgenerally available
Protocols on RuAPIOpenAI (/v1/chat/completions) · Anthropic (/v1/messages)

Specs are from Anthropic’s official documentation (platform.claude.com), checked Oct 22, 2026.

What it’s good for

  • Daily coding in Cline, Roo Code and Claude Code
  • Chatbots and assistants that need both quality and speed
  • Agents with tool calls and JSON output
  • Reading documents, screenshots and PDFs

When another model is a better fit

  • Claude Opus 5.5 — Anthropic's recommended starting model, for long agentic coding and complex analysis.
  • Claude Haiku 5.5 — The fastest current Claude per Anthropic, for classification, extraction and routing.

Claude Sonnet 5.5: price on RuAPI and elsewhere

RuAPIAITUNNELProxyAPI
Input, $ per 1M tokens$2.40≈ $4.88≈ $6.10
Output, $ per 1M tokens$12.00≈ $24.40≈ $30.50

AITUNNEL and ProxyAPI prices are from their public pages as of Oct 22, 2026 (ProxyAPI prices include VAT, as on their site), converted at the Bank of Russia rate (81.97 ₽ per $1). The RuAPI price is current.

How to connect Claude Sonnet 5.5 from Russia

  1. Sign up at ruapi.ai — with email, Google or Yandex. No VPN needed.
  2. Top up with USDT or USDC from 5 USDT. No USDT yet? Buy it with rubles via SBP — step by step in the docs.
  3. In the Console, open API Keys → Create key.
  4. Use the address https://www.ruapi.ai/v1 and the model claude-sonnet-5-5. For the Anthropic SDK and Claude Code, the address is https://www.ruapi.ai, without /v1.

How to buy USDT with rubles · Quickstart

# faq

FAQ

Sign up at RuAPI, top up with USDT and create a key in the Console — it works with Claude Sonnet 5.5 and every other model. You don’t need a Anthropic account or a VPN.

See also: Claude API in Russia · Documentation · Claude Fable 5.1 · Claude Opus 5.5 · Claude Haiku 5.5

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