GPT-5.4 pro

by OpenAI

GPT-5.4 Pro uses more compute to think harder and provide consistently better answers than GPT-5.4, making it OpenAI's most capable option for complex reasoning tasks. With a 1M token context window and configurable reasoning effort levels, it handles the most demanding professional work. The model supports vision, tool use, and structured output, enabling sophisticated agentic workflows and multimodal reasoning. Because GPT-5.4 Pro is built to tackle hard problems, some requests may take several minutes to complete, trading latency for depth of reasoning. GPT-5.4 Pro is well suited to professionals and organizations that need maximum performance on knowledge work, research, coding, and analysis tasks that demand extended reasoning and accuracy.

Key info

Input
Output
Features
Context window
1.1M
Max output
128K
Input price
$30.00 /1M
Output price
$180.00 /1M
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

GPT-5.4 pro runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
OpenAIUSEnterpriseNo$30.00$180.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting GPT-5.4 pro has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

OpenAI β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Get started

Call GPT-5.4 pro through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "openai/gpt-5.4-pro",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Compare GPT-5.4 pro with…

Side-by-side on privacy, EU hosting, pricing, and benchmarks.

Other models from OpenAI

Start building with 300+ models

One API key. Every major provider. Up and running in minutes.

Get startedView Documentation
GPT-5.4 pro by OpenAI β€” pricing, benchmarks | Opper AI