# GPT-5.4 Pro

> OpenAI's maximum-effort GPT-5.4 tier that thinks longer for high-stakes professional work.

- Maker: OpenAI
- Line: GPT Pro
- Canonical page: https://ai-tldr.dev/models/gpt-5-4-pro/
- Updated: 2026-06-18

## In short

GPT-5.4 Pro is the top reasoning tier of OpenAI's GPT-5.4 family, launched on March 5, 2026 alongside GPT-5.4 Thinking. Where the standard GPT-5.4 balances speed and cost, GPT-5.4 Pro is tuned to use additional inference-time compute to "think harder" and return more consistent answers on the hardest problems. It has a 1.05M-token context window and costs $30.00 per million input tokens and $180.00 per million output tokens.

## Facts

| Fact | Value | Source |
| --- | --- | --- |
| Context window | 1.05M (max output 128K) | [1] |
| Input price | $30.00 per 1M tokens | [2] |
| Output price | $180.00 per 1M tokens | [2] |
| Licence | Proprietary · API only | [1] |
| Released | 5 March 2026 | [3] |
| Knowledge cutoff | August 31, 2025 | [1] |

## Sources

1. [GPT-5.4 Pro model specifications (APXML)](https://apxml.com/models/gpt-54-pro)
2. [GPT-5.4 Pro on OpenRouter (pricing)](https://openrouter.ai/openai/gpt-5.4-pro)
3. [Introducing GPT-5.4 (OpenAI)](https://openai.com/index/introducing-gpt-5-4/)

## Overview

GPT-5.4 Pro is the top reasoning tier of OpenAI's GPT-5.4 family, launched on March 5, 2026 alongside GPT-5.4 Thinking. Where the standard GPT-5.4 balances speed and cost, GPT-5.4 Pro is tuned to use additional inference-time compute to "think harder" and return more consistent answers on the hardest problems. OpenAI positions the GPT-5.4 line as its most capable frontier model for professional work, with strengths in long-horizon deliverables such as slide decks, financial models, and legal analysis.

GPT-5.4 Pro accepts text and image input and supports a 1.05M-token context window with up to 128K output tokens, making it suited to long-context workflows that span large codebases, document sets, and multi-step agentic tasks. It exposes adjustable reasoning effort (medium, high, xhigh) and is available only through the Responses API, with native tool use including web search, file search, image generation, computer use, and MCP. Because a single request can take minutes of reasoning, OpenAI recommends background mode to avoid timeouts.

In ChatGPT, GPT-5.4 Pro is reserved for Pro and Enterprise plans. Via the API it is priced as a premium reasoning tier at $30 per million input tokens and $180 per million output tokens. On evaluations, the GPT-5.4 line set state-of-the-art results in computer use and professional knowledge work, and GPT-5.4 Pro pushes science and agentic-search scores higher still (94.4% GPQA Diamond, 89.3% BrowseComp).

## Benchmarks

- GPQA Diamond: 94.4% ([source](https://apxml.com/models/gpt-54-pro))
- BrowseComp: 89.3% ([source](https://www.digitalapplied.com/blog/gpt-5-4-computer-use-tool-search-benchmarks-pricing))
- ARC-AGI-2 (Verified): 83.3% ([source](https://www.datacamp.com/blog/gpt-5-4))
- FrontierMath Tier 4: 38% ([source](https://www.digitalapplied.com/blog/gpt-5-4-computer-use-tool-search-benchmarks-pricing))
- GDPval (GPT-5.4): 83% ([source](https://x.com/OpenAIDevs/status/2029620996962242663))
- OSWorld-Verified (GPT-5.4): 75% ([source](https://x.com/OpenAIDevs/status/2029620996962242663))
- SWE-Bench Pro, Public (GPT-5.4): 57.7% ([source](https://x.com/OpenAIDevs/status/2029620996962242663))

## Pricing

- Input: $30.00 per 1M tokens
- Output: $180.00 per 1M tokens

ChatGPT Pro/Enterprise tier; API via the Responses API only. Prompts over 272K input tokens incur a 2x input / 1.5x output multiplier.

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

## Strengths

- Maximum-effort reasoning for high-stakes, complex tasks where consistency matters more than latency
- Very large 1.05M-token context window for long-context and whole-repo workflows
- State-of-the-art expert science reasoning (94.4% on GPQA Diamond)
- Strong agentic web search and deep research (89.3% on BrowseComp)
- Native tool use: web search, file search, image generation, computer use, and MCP
- Lower error rate than GPT-5.2 (OpenAI reports 33% fewer errors in individual claims)

## Best for

- Long-horizon professional deliverables: financial models, slide decks, and legal analysis
- Expert-level science, math, and research questions that need careful reasoning
- Deep research and multi-round agentic web search over many sources
- Agentic coding and multi-step problem solving across large codebases
- Long-context document and codebase analysis using the 1.05M-token window
- Computer-use automation that drives a desktop or browser to complete tasks

## How to access

- [OpenAI](https://developers.openai.com/api/docs/models/gpt-5.4-pro) — model id `gpt-5.4-pro`
- [OpenRouter](https://openrouter.ai/openai/gpt-5.4-pro) — model id `openai/gpt-5.4-pro`

## GPT Pro versions

- [GPT-5.5 Pro](https://ai-tldr.dev/models/gpt-5-5-pro/) (23 April 2026)
- GPT-5.4 Pro (5 March 2026) — this page
- [GPT-5.2 Pro](https://ai-tldr.dev/models/gpt-5-2-pro/) (11 December 2025)
- [GPT-5.1 Pro](https://ai-tldr.dev/models/gpt-5-1-pro/) (19 November 2025)
- [GPT-5 Pro](https://ai-tldr.dev/models/gpt-5-pro/) (7 August 2025)

## FAQ

### What is GPT-5.4 Pro?

GPT-5.4 Pro is the highest-effort reasoning tier of OpenAI's GPT-5.4 family, released March 5, 2026. It spends more inference-time compute to "think harder" and give more consistent answers on complex, high-stakes professional tasks. In ChatGPT it is limited to Pro and Enterprise plans, and via the API it is served only through the Responses API.

### How much does GPT-5.4 Pro cost?

Through the API, GPT-5.4 Pro is priced at $30 per million input tokens and $180 per million output tokens. Prompts longer than 272K input tokens are billed at a 2x input and 1.5x output multiplier. For comparison, the standard GPT-5.4 model is far cheaper at roughly $2.50 / $15 per million tokens.

### What is GPT-5.4 Pro's context window and inputs?

GPT-5.4 Pro supports a 1.05M-token context window with up to 128K output tokens. It accepts text and image input and can use native tools including web search, file search, image generation, computer use, and MCP. Its knowledge cutoff is August 31, 2025.

### How does GPT-5.4 Pro perform on benchmarks?

GPT-5.4 Pro reaches 94.4% on GPQA Diamond (expert science reasoning) and 89.3% on BrowseComp (agentic web search), among the strongest reported results. The broader GPT-5.4 line scored 83.0% on GDPval, 75.0% on OSWorld-Verified, and 57.7% on SWE-Bench Pro (Public).

## Links

- [Introducing GPT-5.4 (OpenAI)](https://openai.com/index/introducing-gpt-5-4/)
- [GPT-5.4 Pro model docs (OpenAI)](https://developers.openai.com/api/docs/models/gpt-5.4-pro)
- [GPT-5.4 Pro on OpenRouter (pricing)](https://openrouter.ai/openai/gpt-5.4-pro)
- [OpenAI Developers benchmark post (X)](https://x.com/OpenAIDevs/status/2029620996962242663)
- [GPT-5.4 Pro model specifications (APXML)](https://apxml.com/models/gpt-54-pro)
- [GPT-5.4 benchmarks & pricing (DigitalApplied)](https://www.digitalapplied.com/blog/gpt-5-4-computer-use-tool-search-benchmarks-pricing)
- [GPT-5.4: 1M Context, Tool Search (DataCamp)](https://www.datacamp.com/blog/gpt-5-4)
- [OpenAI launches GPT-5.4 (TechCrunch)](https://techcrunch.com/2026/03/05/openai-launches-gpt-5-4-with-pro-and-thinking-versions/)
- [GPT-5.4 (Wikipedia)](https://en.wikipedia.org/wiki/GPT-5.4)

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