OpenAI's GPT family, versatile all-rounders with strong tool and function calling. Call them through one OpenAI-compatible API, billed at base per-token rates.
Last updated June 5, 2026
Per 1M tokens, billed from your credit balance — no markup on usage. Prices load live from our catalogue.
| Model | Provider | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|
| GPT-5.5 Pro | OpenAI | 1M | $30.00 | $180.00 |
| GPT-5.5 | OpenAI | 1M | $5.00 | $30.00 |
| GPT-5.4 | OpenAI | 1M | $2.50 | $15.00 |
| GPT-5.2 Codex | OpenAI | 400K | $1.75 | $14.00 |
| GPT-5.3 Codex | OpenAI | 400K | $1.75 | $14.00 |
| GPT-5.4 Mini | OpenAI | 400K | $0.75 | $4.50 |
| GPT 5.4 Nano | OpenAI | 400K | $0.20 | $1.25 |
| GPT-OSS 120B | OpenAI | 131K | $0.039 | $0.18 |
Keep the OpenAI SDK; set base_url to Zylo and pick a OpenAI model id.
from openai import OpenAI
client = OpenAI(api_key="ZYLO_KEY", base_url="https://api.zyloai.net/v1")
response = client.chat.completions.create(
model="gpt-5.5-pro",
messages=[{"role": "user", "content": "Hello from Zylo!"}],
)
print(response.choices[0].message.content)
Zylo currently offers 8 OpenAI text models, including GPT-5.5 Pro, GPT-5.5, GPT-5.4, GPT-5.2 Codex. See the table above for live per-1M-token pricing.
Each OpenAI model is billed at its base per-token rate, deducted from prepaid credits — no markup on usage. Zylo's 25% platform fee applies only when you add credits.
Yes. Point any OpenAI SDK at https://api.zyloai.net/v1, use your Zylo key, and set the model id (e.g. gpt-5.5-pro).
Free API key, OpenAI-compatible, local payments.
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