NexAPI vs OpenAI vs Direct DeepSeek

For developers in Southeast Asia — updated June 2026

NexAPIOpenAIDeepSeek Direct
ModelDeepSeek V4 ProGPT-4oDeepSeek V4 Pro
Input Price / 1M$0.28$2.50$0.28
Output Price / 1M$0.56$10.00$0.56
VPN RequiredNoNoYES
Local PaymentCard + MoMo soonCard onlyAlipay/WeChat
OpenAI Compatible100%NativePartial
SEA ServerSingaporeUS/EU onlyChina only
No KYC ChinaYesYesNo

Why not use DeepSeek directly?

  • DeepSeek blocks IPs from Vietnam and most of Southeast Asia — you need a VPN
  • Only accepts Alipay/WeChat Pay — no support for Vietnamese cards or MoMo
  • API format differs slightly from OpenAI — requires code changes
  • High latency from Vietnam via VPN through China
  • KYC requires Chinese ID — impossible for most SEA developers

How NexAPI solves this

  • Servers in Singapore — no VPN needed, less than 50ms ping from Vietnam
  • International card payments + MoMo coming soon
  • 100% OpenAI API compatible — existing code works immediately
  • Dashboard with usage tracking, API keys, billing
  • No Chinese KYC — just email signup

Real Savings for Your Project

Estimated monthly cost at 100M tokens

NexAPI DeepSeek V4$42/mo
8%
OpenAI GPT-4o$500/mo
100%

Save 92% on monthly AI costs