gpt-5.5-pro
NixAPI price, from
USD per 1M tokens · via group Openai-Gpt-2 · Official list price $30 / $180
About gpt-5.5-pro
GPT-5.5pro is available for Responses API requests, including via the Batch API, supporting multi-turn model interactions before responding, with additional advanced API features coming in the future. As GPT-5.5pro is designed for complex problems, some requests may take several minutes to process. To avoid timeouts, use background mode.
Price by routing group
Pick a group in the console when you create a key. Status is live from the router. Live status by group →
| Group | Group status | Model status | Multiplier | Input | Output | Cache read | Cache write |
|---|---|---|---|---|---|---|---|
Openai-Gpt-2 | … | ×1.2427 | $37.28 | $223.68 | — | — | |
Azure-Gpt-6 | … | ×1.521 | $45.63 | $273.78 | — | — |
USD per 1M tokens
Long-context pricing
- Prompts over 272,000 tokens: input ×2, output ×1.5
Supported endpoints
Call gpt-5.5-pro in one request
Works with the OpenAI SDK and any OpenAI-compatible client. Replace the key with your own.
curl https://api.nixapi.com/v1/chat/completions \
-H "Authorization: Bearer $NIXAPI_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-5.5-pro",
"messages": [{"role": "user", "content": "Hello!"}]
}'from openai import OpenAI
client = OpenAI(base_url="https://api.nixapi.com/v1", api_key="sk-…")
resp = client.chat.completions.create(
model="gpt-5.5-pro",
messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)import OpenAI from 'openai';
const client = new OpenAI({ baseURL: 'https://api.nixapi.com/v1', apiKey: process.env.NIXAPI_KEY });
const resp = await client.chat.completions.create({
model: "gpt-5.5-pro",
messages: [{ role: 'user', content: 'Hello!' }],
});
console.log(resp.choices[0].message.content);Questions about gpt-5.5-pro
How much does gpt-5.5-pro cost on NixAPI?
From $37.28 per 1M input tokens and $223.68 per 1M output tokens in the Openai-Gpt-2 group. Prices are pay-as-you-go in USD with no monthly minimum.
How do I call gpt-5.5-pro?
Point any OpenAI-compatible client at https://api.nixapi.com/v1, use your NixAPI key and set the model to "gpt-5.5-pro".
Which routing groups serve gpt-5.5-pro?
gpt-5.5-pro is available in 2 routing groups: Openai-Gpt-2, Azure-Gpt-6. The lowest price is in Openai-Gpt-2.