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Modelby OpenAI

GPT-5.4

GPT-5.4 is OpenAI's March 2026 frontier model with a 1M-token context window and state-of-the-art performance across professional workflows. With capabilities including computer use, search, and tool-calling, it is designed for complex agentic engineering tasks.

Provider
OpenAI
Released
Mar 5, 2026
Context
1.1M tokens
Weights
Closed

Capabilities

  • Reasoning
  • Code Generation
  • Tool Use
  • Computer Use
  • Search
  • Agentic Workflows

Best For

  • Professional Workflows
  • Agentic Tooling
  • Coding Assistance
  • Document And Research Work
  • Dependency Management

Overview

GPT-5.4 is OpenAI's frontier model released in March 2026, combining state-of-the-art reasoning with a 1-million-token context window and a broad capability set including computer use, web search, and advanced tool-calling. It is positioned as OpenAI's most capable general model at the time of release, designed for professional engineering workflows that demand both depth and breadth.

For engineering teams, GPT-5.4's combination of large context, code generation, and computer use opens up new possibilities in dependency management automation — from autonomous code migration to computer-controlled upgrade execution.

Key Capabilities

  • 1M Token Context Window — ingest and reason over entire codebases and dependency ecosystems
  • Advanced Code Generation — state-of-the-art code synthesis, review, and refactoring
  • Computer Use — interact with desktop and web environments for autonomous task execution
  • Web Search — access real-time information from the web during reasoning
  • Tool Use — native function-calling for deep integration with developer APIs and CI/CD platforms

Use Cases for Engineering Teams

  • Autonomous Dependency Upgrades — plan, write, test, and commit dependency upgrade changes autonomously
  • Full Codebase Analysis — process complete codebases to identify version drift and technical debt
  • Computer-Use Automation — control browser-based package registry interfaces and dependency dashboards
  • Real-Time Advisory Lookup — search for the latest CVE and security advisory information during analysis
  • Complex Migration Planning — generate detailed migration plans for major framework or library version upgrades

Technical Specifications

  • Context Window: 1,050,000 tokens
  • Pricing: Not publicly announced at launch
  • Open Weight: No
  • Release Date: 2026-03-05

Provider

GPT-5.4 is developed by OpenAI. For the latest information, visit the official documentation.

Documentation

View Official Docs

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Tags

reasoningcode generationtool useopenaigpt 5agenticcomputer use
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