Refactoring and code review
Analyzes interconnected Python, TypeScript, Go, Rust and SQL files, spots race conditions and rewrites complete modules.
Prompt: inspect the balance deduction transactions and fix the race condition
DWG-01 // ANTHROPIC OPUS 5.5 & SONNET 5
Claude Opus 5.5: Engineering audit, code and documents
124 ₽ / 1M OPUS 5.5
78 ₽ / 1M SONNET 5
Built for software engineers, system architects and analysts. Claude Opus 5.5 and Sonnet 5 hold up to 200,000 tokens in memory (around 500 pages of code or text) and produce complete modules without placeholders.
In LeinGPT the full Anthropic lineup runs directly without a VPN or foreign phone number. Usage is billed in rubles per processed token: Sonnet 5 costs 78 / 260 ₽ per 1M tokens and flagship Opus 5.5 costs 124 / 624 ₽.
Module 01 // Complete refactoring without truncation
diff --git a/service/billing.py
- lock = threading.Lock()
+ async with db.transaction():
Module 02 // PDF and contract audit
The 200,000-token window fits up to 500 pages of contracts or codebase in a single request.Claude Series Technical Specifications
SPEC // ANTHROPIC SERIES| Anthropic Model | Input / Output (1M tokens) | Cửa sổ ngữ cảnh | Engineering specialization |
|---|---|---|---|
| Claude Opus 5.5 | 124 ₽ / 624 ₽ | 200 000 tokens | Complex architecture, security audits, large repositories and legal contracts |
| Claude Sonnet 5 | 78 ₽ / 260 ₽ | 200 000 tokens | Primary workhorse: coding, frontend, SQL and analytical reports |
| Claude Sonnet 4.6 | 60 ₽ / 200 ₽ | 200 000 tokens | Cost-effective mode for daily tasks, unit tests and article analysis |
| Claude Opus 4.8 | 180 ₽ / 720 ₽ | 200 000 tokens | Classic 4.8 flagship for deep editing and document cross-checking |
| Claude Haiku 4.5 | 80 ₽ / 400 ₽ | 200 000 tokens | Fast classification, JSON extraction from tables and instant replies |
All models run directly via API in LeinGPT chat without a VPN. Switch between Sonnet 5 and Opus 5.5 inside the same conversation.
Modular engineering and analytical workflows
WORKFLOW // 01-03Contract and documentation audit
Upload PDFs or DOCX files up to hundreds of pages: the model cross-checks clauses, spots contradictions and builds a risk table.
Prompt: cross-check Appendix 2 against the master agreement and list discrepancies
System architecture design
Designs database schemas, OpenAPI contracts, migrations and technical specifications tailored to your requirements.
Prompt: design a PostgreSQL billing schema with monthly partitioning
Ruble pricing ledger
LEDGER // PAY-AS-YOU-GOPay-as-you-go from your balance
No monthly fee or foreign cards required. Charged from your ruble balance proportionally to prompt and reply length.
- Claude Opus 5.5 1M tokens: input / output
- 124 ₽ / 624 ₽
- Claude Sonnet 5 1M tokens: input / output
- 78 ₽ / 260 ₽
- Claude Sonnet 4.6 1M tokens: input / output
- 60 ₽ / 200 ₽
- Claude Opus 4.8 1M tokens: input / output
- 180 ₽ / 720 ₽
Why LeinGPT is more practical than a direct Anthropic account
Anthropic blocks Russian IPs and phone numbers, while Claude Pro costs $20/month and throttles quotas on large files.
- Sign in within 10 seconds via Telegram, Yandex or email without a VPN.
- Top up from 100 ₽ via SBP and Russian bank cards: enough for dozens of hours of coding and document analysis.
- Use GPT-6.1 Sol, GPT-6 Astra and Gemini 4 Argon alongside Claude in the same conversation.
Frequently asked questions about Claude Opus 5.5 and Sonnet 5
FAQ // TECHNICAL NOTESHow do Claude Opus 5.5, Sonnet 5 and Sonnet 4.6 differ?
Claude Opus 5.5 (124 / 624 ₽ per 1M tokens) delivers maximum depth for code review, architecture and complex contracts. Claude Sonnet 5 (78 / 260 ₽) balances high speed and accuracy for daily coding and analytics. Claude Sonnet 4.6 (60 / 200 ₽) handles routine edits, tests and drafts.
How do I use Claude without a VPN or foreign bank card?
LeinGPT opens directly without a VPN. Sign-in takes 10 seconds via Telegram, Yandex or email, and balance top-ups start from 100 ₽ via SBP and Russian bank cards.
How much data fits into the 200,000-token context window?
A 200,000-token context window holds roughly 500 pages of text or dozens of source code modules. You can upload an entire contract, specification or project archive in a single conversation.
Why is pay-per-token billing better than a $20 Claude Pro subscription?
Anthropic official subscriptions require a foreign card, block Russian accounts and throttle message limits on long contexts. On LeinGPT you pay in rubles only for actual token usage with no expiring monthly fees.
Which is better for coding: Claude Opus 5.5 or GPT-6.1 Sol?
Engineers often use both in the same LeinGPT chat: Claude Opus 5.5 and Sonnet 5 excel at clean multi-file refactoring and frontend code, while GPT-6.1 Sol and Astra are great for rapid engineering lookups and algorithmic math.