“Can you build with GPT-5.5 and Claude Opus, no matter where your team is located?” —every developer shipping global products asks this at some point. The answer today is yes: a unified API gateway gives you one OpenAI-compatible endpoint for every frontier model, with global edge routing that keeps latency low no matter where your users are.
The old way of working with AI APIs meant juggling multiple accounts: a separate OpenAI account, a separate Anthropic account, a separate Google account —each with its own key, its own billing, and its own integration quirks. A unified gateway collapses all of that into one endpoint.
What a Unified AI API Gateway Is
A unified gateway is a single OpenAI-compatible API endpoint that fronts every major model provider. Your application speaks standard OpenAI format; the gateway handles routing, authentication, billing, and failover behind the scenes.
This is the same architecture used by production teams at every scale:
- Model routing — switch between GPT-5.5, Claude Opus, Gemini, and DeepSeek with a single parameter
- Automatic failover — if one provider is down, traffic routes to your backup model without an error reaching your users
- Unified billing — one account, one balance, one invoice across every provider
- Global edge network — 15+ edge nodes across Asia, Europe, and the Americas keep routing overhead low
Real-World Latency
A developer in Manila routing through TokSpan’s Hong Kong edge node measured GPT-5.5 time-to-first-token at 380ms, versus 350ms from a US-based developer connecting directly. Claude Opus streamed at 42 tokens/second through the gateway versus 44 tokens/second direct —a 5% overhead that is indistinguishable in practice. Edge nodes close to your region (for example, Singapore for Southeast Asia, Tokyo for East Asia) keep the added overhead between 20–50ms. Test from your location for accurate numbers.
Integration —12 Lines of Python
from openai import OpenAI
client = OpenAI(
base_url="https://api.tokspan.com/v1",
api_key="ts-your-key-here"
)
# GPT-5.5, Claude Opus, Gemini —all through this one client
response = client.chat.completions.create(
model="gpt-5.5",
messages=[{"role": "user", "content": "Hello from the TokSpan API."}]
)
print(response.choices[0].message.content)That’s the entire migration. Change base_url. Change api_key. Your existing OpenAI SDK code works without modification. This works with LangChain, LlamaIndex, the Vercel AI SDK, and every OpenAI-compatible tool.
Billing & Payment Options
TokSpan operates on transparent pay-as-you-go pricing: provider rates plus a small, visible service fee. No subscription, no minimum commitment.
We accept multiple payment methods to serve developers globally:
- Credit / debit cards — Visa, Mastercard, American Express via Stripe
- PayPal — available in 200+ countries and regions
- Bank transfer — available for enterprise accounts
All balances are USD-denominated. You pay only for the tokens you use, and you can set spending caps per API key to stay in control.
Security
Virtual API keys ensure your provider credentials are never exposed. If a key is compromised, you revoke it at the platform level —provider keys never appear in your application code. Data in transit uses TLS 1.3; keys are encrypted at rest with AES-256. Prompt and completion content is never logged, stored, or used for training. For the highest data-residency requirements, see our self-hosting and enterprise options.
Integration Tools & SDKs
Because TokSpan speaks the OpenAI API, every major tool works out of the box:
- Claude Code — point
ANTHROPIC_BASE_URLat an endpoint that speaks the Anthropic-native Messages API - Cursor & IDEs — use an OpenAI-compatible endpoint
- LangChain & LlamaIndex — drop-in compatible, zero config changes
Verify that your chosen platform supports the protocol your tool requires before committing.
For a complete guide on accessing GPT-5.5, Claude, Gemini, and DeepSeek through a single API key, see how to access all major models from one API key.
Compliance & Responsible Use
Global developers building on frontier models should be aware of the legal and contractual landscape:
- Review the terms of service of each upstream provider before using their models
- Ensure your use case complies with the laws of your jurisdiction
- For regulated industries (healthcare, finance, legal), consult counsel about data residency and contractual obligations
- Enterprise customers can request a Data Processing Agreement (DPA) and discuss dedicated deployments
TokSpan is operated by Protocol One LLC, registered in Cheyenne, Wyoming, United States. Our support team is available at support@tokspan.com.
FAQ
How do I migrate from the OpenAI SDK?
Change base_url to https://api.tokspan.com/v1 and use your TokSpan API key. Your existing code works unchanged.
Which models are available?
200+ models across all major providers: LLMs (GPT-5.5, Claude Opus, Gemini 2.5 Pro, DeepSeek V4, Llama, Mistral), vision and multimodal, embeddings and reranking, and speech/audio. Browse the live catalog with real-time per-token pricing at api.tokspan.com/pricing.
Which regions does TokSpan serve?
TokSpan’s edge network spans Asia, Europe, and the Americas with low-latency access from every major region. If you have questions about availability where you are, our support team is happy to help.
Is TokSpan compatible with OpenAI SDKs and tools?
Yes, 100%. Any library that speaks the OpenAI API works — Python, Node.js, Go, curl, LangChain, and the Vercel AI SDK.
How much does it cost to start?
Pay-as-you-go with no minimum. Most developers spend under $5 testing in their first month. Set spending caps per API key to stay in control.
Can I use Claude Code or Cursor?
Both work. Claude Code needs ANTHROPIC_BASE_URL set to an endpoint that speaks the Anthropic-native Messages API. Cursor can use an OpenAI-compatible endpoint.
What payment methods do you accept?
Cards (Visa / Mastercard / Amex via Stripe), PayPal, and bank transfer for enterprise accounts.
Is my data used for training?
No. Prompts and completions are never logged, stored, or used for training. Request metadata is collected only for billing and abuse prevention, as described in our Privacy Policy.