gpt-5.1-codex
NixAPI price, from
USD per 1M tokens · via group Azure-Gpt-3 · Official list price $1.25 / $10Save 63%
About gpt-5.1-codex
GPT-5.1-codex is the well-equipped heavy-duty powerhouse, designed to tackle the toughest coding challenges, handle large-scale codebases, and provide deep architectural guidance — the go-to model for enterprise-grade and highly complex development scenarios.
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 |
|---|---|---|---|---|---|---|---|
Azure-Gpt-3 | … | ×0.3718 | $0.4647 | $3.718 | $0.0465 | — | |
Azure-Gpt-4 | … | ×0.7436 | $0.9295 | $7.436 | $0.0929 | — | |
Azure-Gpt-5 | … | ×1.014 | $1.268 | $10.14 | $0.1268 | — |
USD per 1M tokens
Supported endpoints
Call gpt-5.1-codex 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-5.1-codex",
"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-5.1-codex",
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-5.1-codex",
messages: [{ role: 'user', content: 'Hello!' }],
});
console.log(resp.choices[0].message.content);Questions about gpt-5.1-codex
How much does gpt-5.1-codex cost on NixAPI?
From $0.4647 per 1M input tokens and $3.718 per 1M output tokens in the Azure-Gpt-3 group, about 63% below the official list price. Prices are pay-as-you-go in USD with no monthly minimum.
How do I call gpt-5.1-codex?
Point any OpenAI-compatible client at https://api.nixapi.com/v1, use your NixAPI key and set the model to "gpt-5.1-codex".
Which routing groups serve gpt-5.1-codex?
gpt-5.1-codex is available in 3 routing groups: Azure-Gpt-3, Azure-Gpt-4, Azure-Gpt-5. The lowest price is in Azure-Gpt-3.