OpenRouter alternative.
More modalities, one schema, same frontier catalog.

# pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://openrouter.ai/api/v1",
    api_key="sk-or-...",
)

r = client.chat.completions.create(
    model="openai/gpt-5.4",
    messages=[{"role": "user", "content": "Hello"}],
)

# pip install aigateway-py openai
# aigateway-py: sub-accounts, evals, replays, jobs, webhook verify.
# openai SDK: chat/embeddings/images/audio — drop-in compat per our SDK's own guidance.
from openai import OpenAI

client = OpenAI(
    base_url="https://api.aigateway.sh/v1",
    api_key="sk-aig-...",
)

r = client.chat.completions.create(
    model="openai/gpt-5.4",
    messages=[{"role": "user", "content": "Hello"}],
)

• Every modality, not just text — image, video, voice, audio, music, embeddings under the same schema.
• No per-model variable markup, no surprise per-route fees — and cached input is 50% off.
• Sub-account API for scoped end-user keys with spend caps (OpenRouter has none).
• Eval-driven routing: grade candidate models on your data, bind the winner to an alias.
• Replay + shadow A/B on any logged request to safely test new models.

• OpenRouter has a longer tail of community text models; we curate to what ships reliably.