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GPT 5.5 Pro

Input:$24/M
Output:$144/M
Rilasciato:Apr 24, 2026

Il modello più avanzato di OpenAI, progettato per i compiti più difficili e per flussi di lavoro agentici di lunga durata. GPT-5.5 Pro eccelle nella programmazione complessa, nell’uso del computer, nella ricerca approfondita, nell’analisi dei dati e nel ragionamento scientifico — offrendo un’intelligenza di livello di frontiera con la latenza di GPT-5.4 e una maggiore efficienza nell’uso dei token. Ideale per casi d’uso aziendali e professionali che richiedono il massimo standard di accuratezza e un’esecuzione autonoma dei compiti.

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Playground per GPT 5.5 Pro

Esplora il Playground di GPT 5.5 Pro — un ambiente interattivo per testare modelli ed eseguire query in tempo reale. Prova prompt, regola parametri e itera istantaneamente per accelerare lo sviluppo e convalidare i casi d'uso.

Technical Specifications of GPT-5.5 Pro

SpecificationGPT-5.5 Pro
Model familyGPT-5.5 Pro (high-compute reasoning variant)
Primary modalityText + image input, text output
Context window1,050,000 tokens
Max output128,000 tokens
Knowledge cutoffDec. 1, 2025
Reasoning profileHigh-compute reasoning optimized
API accessResponses API
Tool supportFunction calling, web search, file search, code interpreter, hosted shell, MCP
StreamingNot supported
Snapshotgpt-5.5-pro-2026-04-23

What is GPT-5.5 Pro?

GPT-5.5 Pro is OpenAI’s high-compute variant within the GPT-5.5 family optimized for difficult reasoning, agentic workflows, deep research, and precision-heavy professional tasks. It is positioned less as a general “fast default” model and more as a model for difficult problems where latency is secondary to quality.

Main Features of GPT-5.5 Pro

  • 1M+ context window: Supports 1,050,000 tokens for extremely large repositories, contracts, logs, or research corpora.
  • High-accuracy reasoning: Tuned for tougher questions where correctness matters more than latency.
  • Tool orchestration: Can use web search, files, code interpreter, and hosted shell in Responses API workflows.
  • Vision input support: Accepts images for charts, diagrams, screenshots, and scanned content.
  • Enterprise-scale automation: Suitable for agent workflows that combine planning, retrieval, execution, and verification.
  • Large outputs: Up to 128,000 output tokens for reports, code generation, and long-form synthesis.

Benchmark Performance (Reported)

Selected published benchmark figures include:

  • GDPval: 82.3%
  • BrowseComp: 90.1%
  • FrontierMath Tier 1–3: 52.4%
  • FrontierMath Tier 4: 39.6%
  • Investment Banking Modeling Tasks (internal): 88.6%

These reported results position it particularly strongly for difficult knowledge work and tool-augmented reasoning.

GPT-5.5 Pro vs GPT-5.5 vs GPT-5.4 Pro

ModelBest forContextReasoningNotable point
GPT-5.5 ProHighest-precision professional work1,050,000HighestSlower, more compute, stronger on hard tasks
GPT-5.5General frontier coding and professional work1,050,000HighestFaster and cheaper than Pro
GPT-5.4 ProPrevious Pro-tier option1,050,000HighestSimilar price/context, older snapshot and slightly different benchmark mix

In OpenAI’s published benchmark table, GPT-5.5 Pro edges GPT-5.4 Pro on several measures such as GDPval, BrowseComp, GeneBench, and FrontierMath, while GPT-5.4 Pro slightly leads on Humanity’s Last Exam with tools. That makes GPT-5.5 Pro a newer “best effort” option rather than a strict across-the-board replacement.

How to access and use GPT-5.5 Pro API

Step 1: Sign Up for API Key

Log in to cometapi.com. If you are not our user yet, please register first. Sign into your CometAPI console. Get the access credential API key of the interface. Click “Add Token” at the API token in the personal center, get the token key: sk-xxxxx and submit.

Step 2: Send Requests to GPT-5.5 Pro API

Select the “gpt-5.5-pro” endpoint to send the API request and set the request body. The request method and request body are obtained from our website API doc. Our website also provides Apifox test for your convenience. Replace <YOUR_API_KEY> with your actual CometAPI key from your account. Where to call it:   response format.

Insert your question or request into the content field—this is what the model will respond to . Process the API response to get the generated answer.

Step 3: Retrieve and Verify Results

Process the API response to get the generated answer. After processing, the API responds with the task status and output data.

FAQ

Prezzi per GPT 5.5 Pro

Esplora i prezzi competitivi per GPT 5.5 Pro, progettato per adattarsi a vari budget e necessità di utilizzo. I nostri piani flessibili garantiscono che paghi solo per quello che usi, rendendo facile scalare man mano che i tuoi requisiti crescono. Scopri come GPT 5.5 Pro può migliorare i tuoi progetti mantenendo i costi gestibili.

TierConditionComet Price (USD / M Tokens)Official Price (USD / M Tokens)Discount
short_contextlen <= 272000
Input:$24.0000/M
Output:$144.0000/M
Input:$30.0000/M
Output:$180.0000/M
-20%
long_context-
Input:$48.0000/M
Output:$216.0000/M
Input:$60.0000/M
Output:$270.0000/M
-20%

Codice di esempio e API per GPT 5.5 Pro

Accedi a codice di esempio completo e risorse API per GPT 5.5 Pro per semplificare il tuo processo di integrazione. La nostra documentazione dettagliata fornisce una guida passo dopo passo, aiutandoti a sfruttare appieno il potenziale di GPT 5.5 Pro nei tuoi progetti.

curl https://api.cometapi.com/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $COMETAPI_KEY" \
  -d '{
    "model": "gpt-5.5-pro",
    "input": "How much gold would it take to coat the Statue of Liberty in a 1mm layer?",
    "reasoning": {
      "effort": "medium"
    }
  }'

cURL Code Example

curl https://api.cometapi.com/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $COMETAPI_KEY" \
  -d '{
    "model": "gpt-5.5-pro",
    "input": "How much gold would it take to coat the Statue of Liberty in a 1mm layer?",
    "reasoning": {
      "effort": "medium"
    }
  }'

Python Code Example

from openai import OpenAI
import os

# Get your CometAPI key from https://www.cometapi.com/console/token, and paste it here
COMETAPI_KEY = os.environ.get("COMETAPI_KEY") or "<YOUR_COMETAPI_KEY>"
BASE_URL = "https://api.cometapi.com/v1"

client = OpenAI(base_url=BASE_URL, api_key=COMETAPI_KEY)
response = client.responses.create(
    model="gpt-5.5-pro",
    input="How much gold would it take to coat the Statue of Liberty in a 1mm layer?",
    reasoning={"effort": "medium"},
)

print(response.output_text)

JavaScript Code Example

import OpenAI from "openai";

// Get your CometAPI key from https://www.cometapi.com/console/token, and paste it here
const COMETAPI_KEY = process.env.COMETAPI_KEY || "<YOUR_COMETAPI_KEY>";
const BASE_URL = "https://api.cometapi.com/v1";

const client = new OpenAI({
  apiKey: COMETAPI_KEY,
  baseURL: BASE_URL,
});

const response = await client.responses.create({
  model: "gpt-5.5-pro",
  input: "How much gold would it take to coat the Statue of Liberty in a 1mm layer?",
  reasoning: {
    effort: "medium",
  },
});

console.log(response.output_text);