SVN API API · VND billing · VAT invoices on request

One API platformFor applications and AI agents

Connect your application to 153 AI models through the Anthropic or OpenAI SDK. Pay in VND, manage API keys, and track the cost of each call. From $0.0682/1M tokens.

Create an API key View docs

Some models have a per-request minimum. Check the exact model ID, billing unit, rate and minimum on Pricing.

API · TOKEN · AGENTsvnapi.com

Receiving the requestIllustrative processing flow

Platform activity

Cumulative figures from usage logs, updated every 5 seconds.

Aggregated from usage logs

Updates every 5 seconds

From the log

100.00%

Request processing rate

Cumulative rate using infrastructure-error filters; not an SLA commitment.

Optimized

< 25ms

P95 Response Latency

Direct domestic routing via high-speed backbone.

Awaiting update

Successful API calls

Successfully served out of 7,853 requests sent

Exact Count

Total recorded tokens

661,993,301 token (prompt & completion)

API integration

Start integrating

Choose the right example and follow three steps to send your first request.

Create an API key

Sign up, verify your email and create an API key. Set STALI_API_KEY for cURL, Node.js and Claude Code; Python can prompt for it. In OpenClaw, replace the sample apiKey in configuration and keep keys out of Git.

Configure the connection

Use the gateway root URL for the Anthropic SDK and Claude Code. For the OpenAI SDK, append /v1 to the root URL; the SDK adds the API path. The example shows your gateway URL.

Choose a model and send a request

Choose a model ID from the catalogue and use it in the matching example. Review the result and cost of each call in your dashboard.

Read the full integration guide

curl -N https://svnapi.com/v1/messages \
  -H "x-api-key: ${STALI_API_KEY:?STALI_API_KEY}" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-fable-5",
    "max_tokens": 1024,
    "stream": true,
    "messages": [
      { "role": "user", "content": "Write a quicksort function in Python" }
    ]
  }'

Set up environment variables safely

Inside the platform

Manage your API from one dashboard

Preview key management, cost tracking, and prompt testing in one interface.

Create a separate key for each application and revoke it when no longer needed.

Open dashboard

SVN APIDemo data

API keys02

Test applicationsk-demo-••••••••a1

Example

Internal assistantsk-demo-••••••••b2

Example

These sample keys are illustrative and cannot be used to call the API.

Illustrative data only. Not linked to an account and no API requests are sent.

Catalogue online

Choose a modelfor your application

153 models with published prices and billing units. Choose the model ID that fits your integration.

Showing 9 of 153 models

Claude Sonnet 5.5

req/claude-sonnet-5-5

Per request

$0.0227 / request

Context window1,000,000 token

Maximum output128,000 token

ANTHROPIC APIUse now

Claude Haiku 5.5

claude-haiku-5-5

Token billing

$0.2727 / 1M tokensMinimum $0.00909 / request

Context window200,000 token

Maximum output64,000 token

ANTHROPIC APIUse now

Claude Opus 5.5

claude-opus-5-5

Token billing

$0.6818 / 1M tokensMinimum $0.0182 / request

Context window1,000,000 token

Maximum output128,000 token

ANTHROPIC APIUse now

Claude Haiku 4.5

req/claude-haiku-4-5

Per request

$0.0182 / request

Context window200,000 token

Maximum output64,000 token

ANTHROPIC APIUse now

Claude Opus 4.8

req/claude-opus-4-8

Per request

$0.0182 / request

Context window1,000,000 token

Maximum output128,000 token

ANTHROPIC APIUse now

DeepSeek V4.1 Flash

req/deepseek-v4.1-flash

Per request

$0.0136 / request

Context window1,000,000 token

Maximum output128,000 token

OPENAI APIUse now

Gemini 3.1 Pro

gemini-3.1-pro

Token billing

$0.1591 / 1M tokensMinimum $0.00455 / request

Context window1,000,000 token

Maximum output65,536 token

OPENAI APIUse now

DeepSeek V4 Pro

req/deepseek-v4-pro

Per request

$0.0136 / request

Context window1,000,000 token

Maximum output128,000 token

OPENAI APIUse now

Claude Sonnet 4.6

claude-sonnet-4-6

Token billing

$0.35 / 1M tokensMinimum $0.00909 / request

Context window1,000,000 token

Maximum output128,000 token

ANTHROPIC APIUse now

View full pricing

Gateway infrastructure

API infrastructureFor your AI applications

Integrate multiple models, manage access, and track costs on one platform.

Clear pricing

Pay for what you use

VND pricing for each model. Top up in advance and use as needed, with no maintenance fee.

Easy integration

Work with familiar SDKs

Use the OpenAI or Anthropic SDK with your SVN API API key and base URL. Guides are available for Claude Code, Cursor, and Cline.

Access control

Manage API keys by application

Create separate keys for your applications, give them clear names, and revoke them when no longer needed.

Fallback routing

Switch routes, keep the model

Supports fallback to another route for the same model when routing conditions are met.

For businesses

Electronic VAT invoices

Electronic VAT invoices are available on request. Contact support with your invoice details and transaction reference.

Model selection

Multiple models, one platform

Access Claude, GPT, Gemini, and DeepSeek in one catalogue. Review each model’s pricing and billing units before use.

Cost visibility

Track every API call

View the model, token count, cost, and status of each call in your dashboard.

Payment and cost management

Payment and managementwhen using the API

Compare payment methods and management tools. Direct purchase terms vary by provider, market and account.

Estimated Savings & VAT Calculator

Real cost comparison: Local VNĐ with VAT invoice vs Overseas USD cards

Budget:5,000,000 đ/tháng

1.000.000 đ25.000.000 đ50.000.000 đ

FX & Card fee saved (3.5%)

+175,000 đAvoid FX markup & foreign card fees

Tax deduction value (10%)

+500,000 đValid input VAT deductible for biz

Annual Total Benefit

+8,100,000 đReal budget optimization

Compared item	SVN API · VNĐ	Direct API purchase
Claude Opus 5 / 1M tokens	$0.35	Provider list pricing
Claude Fable 5 / 1M tokens	$0.4455	Provider list pricing
Minimum standard top-up	$2.27	Varies by provider
Payment method	VietQR / VND bank transfer	Supported payment methods
Value-added tax (VAT)	Electronic VAT invoice when you need it	Subject to provider policy
Cost control per call	Detail for each request, CSV export	Provider-specific tools

SVN API prices are shown in VND. This table does not convert foreign prices or claim cost savings; compare the same model and billing method. Some models have a per-request minimum. Check the exact model ID, billing unit, rate and minimum on Pricing.

Before you try a call

Frequently asked questionsIntegration, costs and data

Learn about model billing, usage limits, invoices and data.

Does SVN API bill by token or by request?

The Pricing page specifies the billing unit for each model ID. Some models are billed by token and others by request. For token-based models, the listed pricing applies to input and output tokens. Some models have a per-request minimum. Check the exact model ID, billing unit, rate and minimum on Pricing.

Does wallet balance expire?

No. Wallet balance never expires — use it until it runs out.

How do I configure the SDKs, Claude Code, and OpenClaw?

Choose the matching Quickstart example, then configure your API key, base URL, and model ID. The Anthropic SDK, OpenAI SDK, Claude Code, and OpenClaw have their own configuration; use the example for your tool.

Is there a rate limit?

No fixed RPM cap currently applies to the API key. Capacity still depends on the model, provider route, system load and protective limits; this does not guarantee unlimited requests.

Do you store my prompts?

API usage logs retain metadata such as model, tokens, cost and status for billing, reconciliation and support. Playground conversations saved to your account contain messages, replies, system instructions and attachment data. See the Privacy policy for retention scope and deletion requests.

What if I run out of balance mid-session?

The API returns HTTP 402 when your balance is insufficient. Once your top-up is confirmed, you can continue using your existing API key.

STANDARD TOP-UP FROM VND 50,000 · PAY VND 20,000 GET VND 10,000 EXTRA ONCE FOR ELIGIBLE ACCOUNTS

Start integratingwith SVN API

Create an account, add balance, and get your API key. Contact support if you need help with the configuration.

Create an API key Technical support on Zalo

⚡Kích hoạt 30 giây🛡️Không cần thẻ quốc tế🧾Hóa đơn VAT tự động