OpenRouter is the established leader in unified LLM APIs. Vynex API is a newer OpenAI-compatible gateway covering the same frontier model families — GPT, Claude, Gemini, DeepSeek, Qwen, and GLM — from a single endpoint.
This page compares them honestly across the dimensions developers actually care about, so you can pick based on facts rather than marketing.
| Feature | Vynex API | OpenRouter |
|---|---|---|
| OpenAI-compatible /v1 endpoint | ✓ | ✓ |
| Single API key for all models | ✓ | ✓ |
| GPT-5.x family | Same day as release | Same day as release |
| Claude 4.x (Opus / Sonnet / Haiku) | ✓ | ✓ |
| Gemini 3.x Pro | ✓ | ✓ |
| Streaming + function/tool calling | ✓ | ✓ |
| Per-token transparent pricing | ✓ | ✓ |
| Pay-as-you-go, no monthly minimum | ✓ | ✓ |
| Works when OpenAI is region-blocked | ✓ | Partial |
| Native Chinese-language console & support | ✓ | ✗ |
| Card / USDT / bank-transfer top-up | ✓ | Card / crypto |
# Was: base_url=https://openrouter.ai/api/v1
# Now: base_url=https://llm-api.vynexcloud.com/v1
openai --base-url https://llm-api.vynexcloud.com/v1 chat.completions.create \
-m gpt-5.4 -g user "Hello"Yes. Vynex exposes a standard /v1/chat/completions endpoint. Streaming (SSE), function/tool calling, and the embeddings interface work exactly as with the OpenAI SDK. Most users switch by changing only base_url and api_key.
Both are pay-as-you-go and per-token. Final cost depends on the model and current rates shown on each pricing page. Vynex accepts card, USDT, and bank transfer top-ups with no monthly minimum.
In most cases yes. The request and response shapes are OpenAI-compatible, so a model name and base_url change is usually sufficient. Tool-call schemas are compatible.
Vynex is designed to serve developers globally, including regions where direct OpenAI access is restricted. This is one of the main reasons teams switch from going direct.