OpenAI GPT-5.4
The Most Capable Frontier Model for Professional Work
Best for: Organizations needing a powerful all-rounder for agentic workflows, coding, and complex reasoning with the widest ecosystem support.
OpenAI GPT-5.4 is OpenAI's most capable and efficient frontier model, released in March 2026. With state-of-the-art coding, computer use, tool search, and a 1M-token context window, GPT-5.4 brings together the best advances in reasoning, coding, and agentic workflows. It delivers a 33% reduction in factual errors compared to GPT-5.2 and supports up to 128K output tokens.
Key Strengths
1M Token Context Window
Analyse entire codebases, long document collections, or extended agent trajectories in a single request with up to 1 million tokens of context.
Largest Ecosystem
Most extensive plugin, integration, and third-party tool ecosystem. GPT Store, Assistants API, Batch API, and more.
Built-in Computer Use
First mainline model with built-in computer-use capabilities, enabling agents to interact directly with software in a build-run-verify-fix loop.
Tool Search
Efficiently works with many tools via lightweight tool discovery, reducing total token usage by 47% while maintaining accuracy.
Advanced Reasoning
GPT-5.4 Thinking variant provides deep chain-of-thought reasoning for complex mathematical, scientific, and logical problems.
Context-Free Grammar Support
Constrain model outputs to specific syntax or DSL using Lark grammars for precise, structured responses and tool calls.
Best Use Cases
Agentic Workflows
Deploy autonomous agents that plan, execute, and verify complex multi-step tasks across software environments.
Full-Codebase Analysis
Ingest and reason over entire repositories for code review, refactoring, migration, and documentation at scale.
Enterprise Document Processing
Process and analyse large document collections, contracts, and reports with million-token context.
Content Generation at Scale
Marketing copy, blog posts, social media, email campaigns with improved factual accuracy and instruction following.
Top Industries
Pricing
| Model | Input | Output |
|---|---|---|
| GPT-5.4Flagship model | $2.50/1M | $15.00/1M |
| GPT-5.4 ProMost demanding work | $30.00/1M | $180.00/1M |
| GPT-4.1 NanoBudget-friendly | $0.10/1M | $0.40/1M |
Batch API offers 50% discount on all token costs. Cached input pricing at $0.25/1M (90% discount). Fine-tuning available.
Integration
OpenAI API, Python SDK, Node.js SDK, REST API. Assistants API, Batch API, Fine-tuning API. Computer use and tool search APIs. Available on Azure OpenAI.
Why Implement OpenAI GPT-5.4 with BroadComms?
Certified Expertise
Deep expertise with OpenAI GPT-5.4 combined with multi-provider knowledge
Cost Optimization
We ensure you use OpenAI GPT-5.4 where it excels and route other tasks to cheaper alternatives
No Lock-in
Our architecture ensures you can add or switch providers at any time