LIVE
Supports models from
One gateway · every major model · UPI billing

One API key for every AI model.
Pay with UPI.

One API key that works with every major AI model — GPT, Claude, Gemini, DeepSeek and hundreds more. Add money with UPI, starting at just ₹10. Already using OpenAI? Change one line — your existing code keeps working.

Try the playground
$ curl https://api.aitklabs.in/v1/chat/completions -H "Authorization: Bearer yk_live_…"
Intelligent Request Routing LIVE
Developer App API Gateway Auth · KeysBilling Routing Engine Response Formatter User OpenAI Anthropic Google Gemini DeepSeek Mistral Local Models
Idle — send a request in the playground to watch a live route.
350+
Models, one key
20+
AI labs supported
99.9%
Failover uptime target
Free
Models included
Keys are hashed, not stored
Your API key is SHA-256 hashed on our end — even we can't read it back. Lose it, revoke it, generate a new one.
Prompts aren't logged
We meter tokens, cost, and latency for billing — never the content of what you send or get back.
Payments verify by signature
Top-ups confirm via a signed webhook, not a client-side callback — a closed tab can't lose your credit.

One API for any model

GPT, Claude, Gemini, DeepSeek, Mistral, Grok, Kimi, Qwen and hundreds more — through one key and one endpoint. The OpenAI SDK works unchanged.

Browse all models →
moonshot/kimi-k2.6
Moonshot AIMoonshotprimary
Fireworksfailover

Automatic failover

Some models are reachable through more than one host. If the primary provider errors, we retry the same model elsewhere — same weights, same price, same result. Only if that fails do we suggest an alternative.

How routing works →

How it works

Three steps from zero to your first completion.
01
Generate an API key
Create a key in seconds. One yk_live_… key works for every model on the platform — no per-model credentials.
02
Add credits with UPI
Top up in rupees by scanning a UPI QR or opening any UPI app. Balance is metered per token — pay only for what you use.
03
Call one endpoint
Point the OpenAI SDK at the gateway. Pick a model or say auto and the routing engine chooses the best one, with failover.

Why Yantra

A single, billed LLM API — one front door to the whole model ecosystem, paid in rupees over UPI.
One key, every model
Stop juggling a dozen provider dashboards and secrets. Generate one key and reach GPT, Claude, Gemini, DeepSeek, Mistral and local models alike.
Intelligent routing + failover
Ask for a capability — auto:cheap, auto:reasoning, auto:fast — and the engine routes to the right model, retrying on a sibling if a provider errors.
OpenAI-compatible
Drop-in /v1/chat/completions, streaming included. Change two lines — base URL and key — and your existing code just works.
Rupee billing over UPI
No cards, no forex. Recharge with UPI and get transparent per-token pricing in INR, metered to the paisa.
Cost-saving auto mode
Let Yantra pick the cheapest model that satisfies the request, so routine calls cost a fraction of always-on flagship pricing.
Local & private models
Route sensitive workloads to self-hosted Llama or Qwen on your own hardware — same key, same API, zero per-token cost.

Common questions

Everything people ask before their first API call.
Do I need an international credit card to use AI APIs?
No. That's the main reason Yantra exists. You top up your Yantra wallet with UPI — Google Pay, PhonePe, Paytm, net banking or any Indian debit card — and we handle paying the AI providers in USD. No international card, no forex declines.
Will my existing OpenAI code work with Yantra?
Yes. Yantra speaks the OpenAI API, so you change two things: point the base URL at https://api.aitklabs.in/v1 and use your Yantra key instead. Everything else in your code stays the same — same SDK, same request format, same response shape.
What is the minimum amount I can add?
₹10. There is no monthly fee and no subscription — you pay per token used, billed in rupees, and whatever you top up stays in your wallet until you spend it.
Which AI models can I use with one key?
GPT (OpenAI), Claude (Anthropic), Gemini (Google), DeepSeek, Mistral, Grok (xAI), Kimi (Moonshot), GLM (Z.AI), Qwen, Llama and 350+ more — across more than 20 AI labs, all through a single API key.
How is the cost calculated?
Per token, in rupees, at the rate shown on the Models page for each model. Input and output tokens are priced separately. Your dashboard shows exactly what each request cost, so there are no surprise bills at the end of the month.
Are there any free models?
Yes — the catalog includes models priced at ₹0 per token, so you can test the integration end to end without spending your balance. You still need an account and an API key to call them.
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