openai/gpt-5.5
OpenAI's flagship GPT-5.5. State-of-the-art reasoning, agentic coding, and tool use with a 1M-token context window. Prompt caching cuts repeated-context cost 90%. Pick it for the hardest tasks.
Source: launch_0023 · Verified 2026-06-01
Cache read $0.050/M · Cache write $—/M
Replace the ONEHOP_KEY placeholder with your API key. Create one →
from openai import OpenAI
client = OpenAI(
base_url="https://api.onehop.ai/v1",
api_key="<ONEHOP_KEY>",
)
completion = client.chat.completions.create(
model="openai/gpt-5.5",
messages=[{"role": "user", "content": "What is the meaning of life?"}],
)
print(completion.choices[0].message.content)