Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 2 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.
GPT-5.4 mini is a smaller, faster, and more cost-efficient version of GPT-5.4 for lightweight tasks.
OpenAI’s open-weight models designed for powerful reasoning, agentic tasks, and versatile developer use cases – gpt-oss-120b is for production, general purpose, high reasoning use-cases.
Source: each provider's published benchmarks. Higher is better. Run an eval to compare on your own data.
from openai import OpenAI
client = OpenAI(
base_url="https://api.aigateway.sh/v1",
api_key="sk-aig-...",
)
# GPT-5.4 Mini
client.chat.completions.create(
model="openai/gpt-5.4-mini",
messages=[{"role":"user","content":"hello"}],
)
# Gpt-Oss-120b
client.chat.completions.create(
model="openai/gpt-oss-120b",
messages=[{"role":"user","content":"hello"}],
)