GPT-5.4 Pro

GPT-5.4 Pro is the performance-oriented variant of OpenAI's GPT-5.4 line, released on March 5, 2026 alongside the base model in both ChatGPT and the API. OpenAI positions it specifically for users who want maximum performance on complex tasks, sitting above the standard GPT-5.4 release, which itself is described as the company's most capable and efficient frontier model for professional work. Together, the two tiers mark a consolidation of OpenAI's recent advances in reasoning, coding, and agentic workflows into a single product family, with Pro reserved for the most demanding workloads.

The GPT-5.4 family is engineered around unified professional use: it brings together stronger reasoning, the coding capabilities inherited from GPT-5.3-Codex, and more capable tool, software-environment, and document workflows spanning spreadsheets, presentations, and other office artifacts. GPT-5.4 Pro inherits that same professional focus, making it best suited to complex workflows that mix long-horizon reasoning with tool use, code generation, and structured document work, such as agentic automation, deep research, and advanced analysis pipelines, where the extra performance headroom over the base model is most likely to matter.

Oppergpt-5.4-progpt-pro

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Quick Info

Provider: Opper
Model key: gpt-5.4-pro
Release date: Mar 5, 2026
Last updated: Mar 5, 2026
Knowledge cutoff: 2025-08-31
Input modalities
Output modalities
Capabilities

Cost

Input token cost: $30.00
Output token cost: $180.00

Limits

Input tokens: 922,000 tokens
Output tokens: 128,000 tokens
Context window: 1,050,000 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about GPT-5.4 Pro

Opper

Official sourceAnnouncement

OpenAI announced GPT-5.4 on March 5, 2026, releasing it simultaneously in ChatGPT as "GPT-5.4 Thinking," in the API, and in Codex. Alongside it, OpenAI launched GPT-5.4 Pro in ChatGPT and the API for users who want maximum performance on complex tasks, making it a distinct higher-end variant of the same frontier model According to the OpenAI announcement, GPT-5.4 ships with up to 1 million tokens of context, native state-of-the-art computer-use capabilities that let agents operate applications and carry out workflows across long horizons, and a new tool search feature for efficiently navigating large tool ecosystems. OpenAI also sta

Opper

Coverage

Fortune reported on March 5, 2026, that OpenAI released GPT-5.4, which it framed as the company's most capable system to date for professional work and a direct competitive shot at Anthropic in the enterprise market. The article confirms that a more powerful variant, GPT-5.4 Pro, is also available for users who need ma The Fortune piece notes that GPT-5.4 consolidates capabilities previously split across separate OpenAI models, combining the coding strengths of GPT-5.3-Codex with improved reasoning and the agentic ability to autonomously navigate desktops, browsers, and software applications. Alongside the model launch, OpenAI also b