Claude Opus 5 API in India

Claude Opus 5 is Anthropic's highest-capability model in the Claude line, and it's callable from India through unoblox on the same ₹-billed, OpenAI-compatible endpoint as the rest of the catalogue — one key, one monthly GST invoice, no international card required.

What the Opus tier is for

Anthropic positions Opus as its most capable tier — the model to reach for when task quality matters more than per-token cost, on work like long-document analysis, complex writing, and multi-step problem-solving. unoblox exposes anthropic/claude-opus-5 through the same chat/completions shape as every other model, so teams already calling Claude directly can point the same request body at unoblox's base URL with no structural changes.

₹ pricing for Claude Opus 5

Claude Opus 5 doesn't have a fixed indicative rate in this note — see the live number on its model page before sizing a workload, since flagship-tier models are typically priced well above mid-tier models. For a sense of scale, here's where two other flagship and mid-tier models sit:

Model	Input (₹ / 1M tokens)	Output (₹ / 1M tokens)
GPT-5	126	1008
DeepSeek V3.2	26.21	38.30

These are different families, not Opus 5 substitutes — they're here to show the range flagship and mid-tier pricing spans across the catalogue.

Calling Claude Opus 5 from unoblox

curl https://api.unoblox.ai/v1/chat/completions \
  -H "Authorization: Bearer ub-gw-xxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-opus-5",
    "messages": [{"role": "user", "content": "Review this contract clause and flag anything ambiguous."}]
  }'

Streaming and tool calling both work unchanged from calling Anthropic directly — only the base URL, the ub-gw- key and the ₹ billing differ.

Deciding when Opus-tier quality is worth it

• Long, high-stakes documents — contracts, compliance text, detailed technical writing — where a mistake is expensive to catch later.
• Complex multi-step tasks where a lower-tier model's occasional errors compound across steps.
• Not the right default for high-volume, simple calls — those are usually cheaper and fast enough on a mid-tier model, with Opus reserved for the subset of requests that need the extra quality.

Frequently asked questions

Is Claude Opus 5 available in India through unoblox? Yes, anthropic/claude-opus-5 is callable on https://api.unoblox.ai/v1 right after signup, billed in rupees against your wallet.

What does Claude Opus 5 cost on unoblox? It isn't in our fixed indicative price list; check the live ₹ rate on its model page before estimating a workload's cost.

Does Claude Opus 5 support streaming and tool calling? Yes, both work the same way as calling Anthropic's API directly, unchanged on unoblox's endpoint.

Does calling Claude Opus 5 through unoblox mean data is processed in India? No, it runs on Anthropic's infrastructure. The India-specific benefit is ₹ billing, a GST invoice and one endpoint, not data residency.

Can I use Claude Opus 5 and a cheaper model like GPT-5 mini with the same account? Yes, every model in the catalogue sits behind the same ub-gw- key; only the model field changes per call.

Is a GST invoice issued for Claude Opus 5 usage? Yes, combined with all other model usage into one monthly GST invoice from an Indian entity, with input tax credit claimable.

Get started in rupees → https://unoblox.ai/sign-in