gpt-5.5

Name: gpt-5.5
Author: OpenAI

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It feature

Starting atSave 10%

Input

$4.6056/ 1M

~~$5.1429~~

Output

$27.6332/ 1M

~~$30.8571~~

Open dashboard

Available from 2 channels

Each channel is compared at its lowest input-price tier; output breaks ties. A dash means /api/pricing does not provide that rate. Selecting a channel updates the endpoints and call example below.

ChannelUSD per 1M tokensInputOutputCache readCache write

jd/gpt-5.5

Lowest input

Input

$4.6056

Output

$27.6332

Cache read

$0.4606

Cache write

openai/gpt-5.5

Input

$5.00

Output

$30.00

Cache read

$0.50

Cache write

Endpoints

POST/v1/chat/completionsChat Completions

Call it

Using jd/gpt-5.5

1from openai import OpenAI23client = OpenAI(4    base_url="https://www.realrelay.ai/v1",5    api_key="sk-***",6)78response = client.chat.completions.create(9    model="jd/gpt-5.5",10    messages=[{"role": "user", "content": "Hello"}],11)1213print(response.choices[0].message.content)

1import OpenAI from "openai";23const client = new OpenAI({4  baseURL: "https://www.realrelay.ai/v1",5  apiKey: process.env.REALRELAY_API_KEY,6});78const response = await client.chat.completions.create({9  model: "jd/gpt-5.5",10  messages: [{ role: "user", content: "Hello" }],11});1213console.log(response.choices[0].message.content);

1curl https://www.realrelay.ai/v1/chat/completions \2  -H "Authorization: Bearer $REALRELAY_API_KEY" \3  -H "Content-Type: application/json" \4  -d '{5    "model": "jd/gpt-5.5",6    "messages": [{ "role": "user", "content": "Hello" }]7  }'

Prices and availability as published on Oct 4, 2026.

Capabilities

Apply patchCode interpreterComputer useFile searchHosted shellImage generationPrompt cachingReasoningStructured outputTool useVisionWeb search

Input

TextImage

Output

Text