Long Context Processing
Handles up to 1 million tokens in a single session, allowing entire codebases, legal documents, or research corpora to be processed without truncation.
OpenAI
GPT 5.4 Pro
GPT-5.4 Pro is a text generation model developed by OpenAI, released in March 2026 as part of the GPT-5.4 family. It is one of three variants in that family — alongside the standard GPT-5.4 and GPT-5.4 Thinking — and is specifically optimized for deep analytical work through multi-path reasoning evaluation. The model supports a context window of 1 million tokens, the largest OpenAI has offered, enabling it to process extensive documents, codebases, and multi-step workflows within a single session. GPT-5.4 Pro is designed for professional and enterprise use cases where thoroughness takes priority over speed, including scientific research, complex decision-making, legal analysis, and financial modeling. The broader GPT-5.4 family includes built-in computer use capabilities for agentic workflows, produces 33% fewer factual errors than GPT-5.2, and ranked #2 out of 116 models on the Artificial Analysis Intelligence Index. It also recorded benchmark scores on OSWorld-Verified, WebArena Verified, and an 83% score on GDPval for knowledge work tasks.
Mar 05, 2026
1050K context
128,000 tokens output
Long Context Processing
Multi-Path Reasoning
Agentic Workflows
Document & Artifact Generation
Reduced Hallucination Rate
Advanced Math & Science
Model Overview
High-signal model metadata in a structured two-column overview table.
Provider
The entity that provides this model.
OpenAI
Model ID
The routed model identifier exposed by upstream providers.
openai/gpt-5.4-pro
Input Context Window
The number of tokens supported by the input context window.
1050K
tokens
Maximum Output Tokens
The number of tokens that can be generated by the model in a single request.
128,000 tokens
tokens
Open Source
Whether the model's code is available for public use.
No
Release Date
When the model was first released.
Mar 05, 2026
4 months ago
Knowledge Cut-off Date
When the model's knowledge was last updated.
March 2026
API Providers
The providers that offer this model. This is not an exhaustive list.
OpenAI, Azure
Modalities
Types of data this model can process.
Text
Image
Code
File
What is GPT 5.4 Pro
A fuller summary of positioning, capabilities, and source-specific details for GPT 5.4 Pro.
GPT-5.4 Pro is a text generation model developed by OpenAI, released in March 2026 as part of the GPT-5.4 family. It is one of three variants in that family — alongside the standard GPT-5.4 and GPT-5.4 Thinking — and is specifically optimized for deep analytical work through multi-path reasoning evaluation. The model supports a context window of 1 million tokens, the largest OpenAI has offered, enabling it to process extensive documents, codebases, and multi-step workflows within a single session.
GPT-5.4 Pro is designed for professional and enterprise use cases where thoroughness takes priority over speed, including scientific research, complex decision-making, legal analysis, and financial modeling. The broader GPT-5.4 family includes built-in computer use capabilities for agentic workflows, produces 33% fewer factual errors than GPT-5.2, and ranked #2 out of 116 models on the Artificial Analysis Intelligence Index. It also recorded benchmark scores on OSWorld-Verified, WebArena Verified, and an 83% score on GDPval for knowledge work tasks.
Capabilities
What GPT 5.4 Pro supports
Multi-Path Reasoning
Evaluates multiple reasoning paths before producing a response, a technique specific to the Pro variant designed for analytical depth in complex scenarios.
Agentic Workflows
Executes multi-step tasks with minimal human oversight using built-in computer use capabilities, including file access, tool orchestration, and data extraction.
Document & Artifact Generation
Produces structured outputs including documents, spreadsheets, slide decks, financial models, and legal analyses in a single generation pass.
Reduced Hallucination Rate
Generates 33% fewer factual errors in individual claims compared to GPT-5.2, based on OpenAI's reported benchmarks at launch.
Advanced Math & Science
Has demonstrated the ability to engage with open research-level mathematics problems, including an EpochAI Frontier Math problem noted in community discussion.
Token-Efficient Inference
Solves problems using fewer tokens than its predecessor GPT-5.2, reducing latency and cost for high-volume production workloads.
Pricing for GPT 5.4 Pro
Primary API pricing shown in the same “quick compare” spirit as the reference page.
Input tokens
$30.00
Per million tokens
Output tokens
$180.00
Per million tokens
Price Comparison
Additional usage-cost dimensions synced into the project for this model.
Web search
$10000.00
maxTemperature
2
maxResponseSize
128,000 tokens
API Access & Providers
Places where this model is available, based on the synced detail-page metadata.
OpenAI
Azure
Provider Endpoints
Endpoint-level provider data currently available for this model.
OpenAI
OpenAI
Azure
Model Performance
Benchmark scores synced from the current model source and normalized into the local catalog.
| Benchmark | Score |
|---|---|
|
ARC-AGI-2
Novel abstract reasoning and pattern recognition
|
Resources & Documentation
Official model cards, release notes, docs, and other references synced from the source page.
TechCrunch Launch Article
Announcements
→
Microsoft Foundry Announcement
Announcements
→
Artificial Analysis Model Profile
Other
→
OpenAI Platform Documentation
Documentation
→
OpenAI API Playground
Playground
→
Official Website
→
Usage Policies
→
Enterprise privacy at OpenAI
→
OpenAI Status Page
→
OpenRouter Model Page
OpenRouter
→
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GPT 5.4 vs GPT 5.4 Pro
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Community discussion
What people think about GPT 5.4 Pro
GPT 5.4 Pro discussions are most active in r/ChatGPT, r/ChatGPTPro, r/singularity. Top Reddit threads cluster around benchmark and model-comparison threads, safety and censorship questions, coding workflow discussions.
The strongest match in this snapshot has 13101 upvotes and 912 comments.
Just came across something interesting and wanted to see what people here think
apparently a 23-year-old used ChatGPT 5.4 Pro to solve one of the Erdős problems that had been open for around 60 years. what’s surprising is that it was done in basically one go, and the model took about 1 hour 20 minutes to work through it
from what I understood, the solution used a known formula that just hadn’t been applied to this specific problem before, which is kind of fascinating if true.
not sure how verified this is yet, but the chat is public if anyone wants to take a look:
https://chatgpt.com/share/69dd1c83-b164-8385-bf2e-8533e9baba9c
Problem:
https://www.erdosproblems.com/1176
X post:
https://x.com/i/status/2048421286091604187
https://x.com/daniel\_nguyenx/status/2029642715055698414
Everything up to \`\*\*Expected by\` is mine, all the content further on is output from somewhere else. It continues on further down the document, but I don't want to show it for privacy reasons (I got some user data and stuff extracted from LinkedIn).
Code seems to be stitched together pieces of code from multiple sources. It includes frontend UI, business logic, SQL queries, user/account-related data handling, and admin workflow code. All (or most) of it seems to be from a single Turkish project of... I presume mobile game?
I did not attempt any jailbreaking or anything weird - was just using GPT to do file analysis and output me an MD file with a summary of the discoveries.
I guess that's your daily reminder to be careful about what you send to the LLMs.
FAQ
Common questions about GPT 5.4 Pro
What is the context window for GPT-5.4 Pro?
GPT-5.4 Pro supports a context window of 1 million tokens, which is the largest context window OpenAI has offered as of its March 2026 release.
What is the training data cutoff for GPT-5.4 Pro?
The training date listed for GPT-5.4 Pro is March 2026, which represents the approximate knowledge cutoff for the model.
How does GPT-5.4 Pro differ from the standard GPT-5.4?
GPT-5.4 Pro adds multi-path reasoning evaluation and greater analytical depth compared to the standard GPT-5.4. It is intended for scenarios where thoroughness matters more than response speed, such as scientific research and complex decision-making.
What types of tasks is GPT-5.4 Pro best suited for?
GPT-5.4 Pro is designed for professional and enterprise use cases including legal analysis, financial modeling, scientific research, document drafting, data analysis, and extended agentic workflows.
Is GPT-5.4 Pro available through Microsoft Azure?
Yes, GPT-5.4 is available through Microsoft Azure AI Foundry, as announced by Microsoft at the time of the model's launch in March 2026.
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