Claude Sonnet 4.5 API Pricing in India (INR)
Battle-tested mid-tier Claude that powered a generation of coding agents, with 1M context and very reliable tool use.
Velona effective price, provider rate converted at USD→INR 95.94 plus platform markup.
Prices refreshed every 6 hours (last: 2026-07-28T17:32:59Z). Model id: anthropic/claude-sonnet-4.5
Monthly cost calculator
Example costs
| Scenario | Cost (INR) |
|---|---|
| A 500-token chat reply (150 prompt + 500 completion tokens) | ₹0.8202 |
| Summarizing a 10-page document (~6,000 prompt + 700 completion tokens) | ₹2.94 |
| A 1M-token batch job (1M prompt + 100k completion tokens) | ₹464.25 |
How to call Claude Sonnet 4.5 on Velona
One gateway API for 300+ models. Create a free account, top up via UPI from ₹10, and send:
curl -X POST https://velona.in/gateway/v1/inference/run \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "anthropic/claude-sonnet-4.5",
"turns": [
{
"role": "user",
"content": "Hello!"
}
]
}'Frequently asked questions
How much does the Claude Sonnet 4.5 API cost in rupees?
Through Velona, Claude Sonnet 4.5 costs ₹309.50 per 1M input tokens and ₹1,548 per 1M output tokens. Prices include forex conversion and Velona's markup. The number you see is the number you pay, refreshed every 6 hours.
Can I pay for the Claude Sonnet 4.5 API with UPI?
Yes. Velona wallets top up via UPI, RuPay, cards, and net banking through Razorpay, starting at ₹10. No international card is required.
Is there a free way to try Claude Sonnet 4.5-class models?
Velona's /try page offers free AI chat with no account (10 messages/day), and free-tier models are available via the free model access program after a quick approval.
What is the context window of Claude Sonnet 4.5?
Claude Sonnet 4.5 supports a context window of 1,000,000 tokens on Velona.
How does Claude Sonnet 4.5 compare with GPT-5.1?
See the side-by-side comparison linked on this page for INR pricing, benchmarks, and guidance on when to pick Claude Sonnet 4.5 versus GPT-5.1.
Compare Claude Sonnet 4.5
Velona is India's INR-native AI API gateway with 300+ models behind one API key, UPI top-up from ₹10, no foreign card needed.