OpenAI SDK (Python / Node)

AI Nexus is compatible with the OpenAI Chat Completions API (POST /v1/chat/completions), the general OpenAI-compatible endpoint. Existing OpenAI code needs only two changes: api_key and base_url.

InstallCopy Anchor Link

pip install openai

Basic callCopy Anchor Link

Replace your-model-id in the samples with a model ID from the model square (or call GET /v1/models).

Put your API key in an environment variable first:

export MYAIEXP_API_KEY="sk-..."

import os

from openai import OpenAI

client = OpenAI(
    api_key=os.environ["MYAIEXP_API_KEY"],
    base_url="https://ai.myaiexp.com/v1",
)

resp = client.chat.completions.create(
    model="your-model-id",  # replace with a model ID from the model square
    messages=[{"role": "user", "content": "Introduce yourself in one sentence."}],
)

print(resp.choices[0].message.content)
print("usage:", resp.usage.prompt_tokens, "in /", resp.usage.completion_tokens, "out")

Key points:

• base_url / baseURL must include /v1: https://ai.myaiexp.com/v1.
• Authentication is Authorization: Bearer sk-...; the SDK adds it from api_key.
• model is the model ID and is case-sensitive. Pick a model on the model square that supports /v1/chat/completions and use its model ID.
• Read the key from an environment variable; never hardcode it or commit it to a repository.

List available modelsCopy Anchor Link

curl -sS https://ai.myaiexp.com/v1/models \
  -H "Authorization: Bearer $MYAIEXP_API_KEY"

The same with the SDK:

for m in client.models.list():
    print(m.id)

GET /v1/models returns every model the current key can call. If you set a model restriction when creating the key, only the allowed models are listed.

Endpoint supportCopy Anchor Link

Endpoint support varies by model: /v1/chat/completions is the general OpenAI-compatible endpoint; /v1/messages works with models that support the Claude-native format; /v1/responses works with models that support the Responses API. The available models and the endpoints each one supports are listed on the model square. See also Anthropic Messages and the Responses API.

If your code switches between models, Chat Completions is the simplest choice: one code path, only model changes.

See the full model list and prices on the model square. Prices are synced daily from each vendor's official public list price, in USD per 1M tokens. Which models your key can use is determined by GET /v1/models.