# GPT-5.4

> OpenAI's efficiency-focused flagship with native computer use and a 1M-token context window.

- Maker: OpenAI
- Line: GPT (Flagship / Thinking)
- Canonical page: https://ai-tldr.dev/models/gpt-5-4/
- Updated: 2026-06-18

## In short

GPT-5.4 is the flagship large language model OpenAI released on March 5, 2026, in the GPT (Flagship / Thinking) line. It has a 1M-token context window and costs $2.50 per million input tokens and $15.00 per million output tokens. You can use it through OpenAI and OpenRouter.

## Facts

| Fact | Value | Source |
| --- | --- | --- |
| Context window | 1M (max output 128K) | [1] |
| Input price | $2.50 / 1M tokens (cached $0.25 / 1M tokens) | [2] |
| Output price | $15.00 / 1M tokens | [2] |
| Licence | Proprietary · API only | [1] |
| Released | 5 March 2026 | [3] |
| Knowledge cutoff | Not publicly disclosed | [1] |

## Sources

1. [OpenAI API Pricing](https://openai.com/api/pricing/)
2. [GPT-5.4 — API pricing & benchmarks (OpenRouter)](https://openrouter.ai/openai/gpt-5.4)
3. [OpenAI launches GPT-5.4 with Pro and Thinking versions — TechCrunch](https://techcrunch.com/2026/03/05/openai-launches-gpt-5-4-with-pro-and-thinking-versions/)

## Overview

GPT-5.4 is the flagship large language model OpenAI released on March 5, 2026, in the GPT (Flagship / Thinking) line. It launched first as GPT-5.4 Thinking and GPT-5.4 Pro — neither available to free-tier users — and was followed on March 17, 2026 by the smaller GPT-5.4 mini (free tier) and GPT-5.4 nano (API only).

OpenAI positions GPT-5.4 as its most capable and efficient frontier model for professional work. The headline feature is built-in computer use: the model can operate desktop environments natively rather than relying on a bolted-on agent layer. It also ships a 'tool search' mechanism that OpenAI says cuts token usage substantially in tool-heavy workflows without hurting accuracy, and OpenAI reports the model solves comparable problems using fewer tokens than GPT-5.2.

On reliability, OpenAI reports GPT-5.4 is 33% less likely than GPT-5.2 to make errors in individual factual claims and 18% less likely to produce a response containing any error. The API exposes a context window of up to 1 million tokens — the largest OpenAI has offered — with standard pricing of $2.50 per million input tokens and $15.00 per million output tokens.

## Benchmarks

- OSWorld-Verified (computer use): 75% ([source](https://en.wikipedia.org/wiki/GPT-5.4))
- GDPval (knowledge work): 83% ([source](https://techcrunch.com/2026/03/05/openai-launches-gpt-5-4-with-pro-and-thinking-versions/))

## Pricing

- Input: $2.50 / 1M tokens per 1M tokens
- Cached input: $0.25 / 1M tokens per 1M tokens
- Output: $15.00 / 1M tokens per 1M tokens

Standard tier (GPT-5.4). Requests above ~272K context move to long-context rates. Smaller variants are cheaper: GPT-5.4 mini ($0.75/$4.50) and GPT-5.4 nano ($0.20/$1.25).

Source: https://openrouter.ai/openai/gpt-5.4

## Strengths

- Native computer use for operating desktop apps and browsers without a separate agent harness
- 1M-token context window — the largest OpenAI offers — for large codebases and document sets
- Improved token efficiency, including a tool-search mechanism that reduces cost in tool-heavy workflows
- Lower factual error rate than GPT-5.2 (33% fewer claim-level errors per OpenAI)
- Strong professional/knowledge-work performance, scoring 83% on OpenAI's GDPval evaluation

## Best for

- Agentic coding and software engineering over large repositories
- Computer-use automation: operating desktop and web applications end to end
- Deep research and long-document analysis using the 1M-token context
- Tool-heavy and multi-step professional workflows where token efficiency matters
- High-stakes knowledge work that benefits from a lower factual error rate

## How to access

- [OpenAI](https://openrouter.ai/openai/gpt-5.4) — model id `gpt-5.4`
- [OpenRouter](https://openrouter.ai/openai/gpt-5.4) — model id `openai/gpt-5.4`

## GPT (Flagship / Thinking) versions

- [GPT-5.5](https://ai-tldr.dev/models/gpt-5-5/) (23 April 2026)
- GPT-5.4 (5 March 2026) — this page
- [GPT-5.2](https://ai-tldr.dev/models/gpt-5-2/) (11 December 2025)
- [GPT-5.1](https://ai-tldr.dev/models/gpt-5-1/) (12 November 2025)
- [GPT-5](https://ai-tldr.dev/models/gpt-5/) (7 August 2025)
- [GPT-4o](https://ai-tldr.dev/models/gpt-4o/) (13 May 2024)

## FAQ

### When was GPT-5.4 released?

OpenAI released GPT-5.4 on March 5, 2026, initially as GPT-5.4 Thinking and GPT-5.4 Pro. The smaller GPT-5.4 mini and GPT-5.4 nano followed on March 17, 2026.

### What is GPT-5.4's context window?

The API version supports a context window of up to 1 million tokens — the largest OpenAI has offered — with a maximum output of around 128K tokens.

### How much does GPT-5.4 cost?

Standard API pricing is $2.50 per million input tokens and $15.00 per million output tokens, with cached input at roughly $0.25 per million. Requests above about 272K tokens of context move to higher long-context rates.

### What's new in GPT-5.4 compared to GPT-5.2?

GPT-5.4 adds native computer use, a tool-search mechanism that cuts token cost in tool-heavy workflows, and better efficiency. OpenAI also reports it is 33% less likely than GPT-5.2 to make errors in individual factual claims.

## Links

- [GPT-5.4 — Wikipedia](https://en.wikipedia.org/wiki/GPT-5.4)
- [OpenAI launches GPT-5.4 with Pro and Thinking versions — TechCrunch](https://techcrunch.com/2026/03/05/openai-launches-gpt-5-4-with-pro-and-thinking-versions/)
- [GPT-5.4 — API pricing & benchmarks (OpenRouter)](https://openrouter.ai/openai/gpt-5.4)
- [OpenAI API Pricing](https://openai.com/api/pricing/)

Source: AI/TLDR LLM registry, https://ai-tldr.dev/models/gpt-5-4/