GPT-5.4

GPT-5.4 is described as a frontier model aimed at complex professional work rather than casual chat, with a single design that pulls together stronger reasoning, coding, computer use, tool workflows, spreadsheet and document handling, and long-context API use. A third-party write-up frames it as a mainline release spanning ChatGPT, the API, and Codex, with a dedicated GPT-5.4 Thinking variant for harder tasks and a gpt-5.4-pro API tier alongside the standard gpt-5.4 endpoint. The intent is to let teams hand off multi-step work involving files, code, and live tools without orchestrating every step themselves.

The model's practical strength lies in agentic coding, computer-use automation, deep research, and long-horizon tool orchestration, with positioning aimed at finance, operations, consulting, legal, and go-to-market teams that work across documents, spreadsheets, and presentations. It is described as benefiting most users who run real workflows across files and tools, while casual users may not need its depth. Native desktop and browser interaction, paired with a roughly 1M-token-class that quick-info value window for long-document and enterprise use, are presented as the main differentiators for agent builders and automation teams.

OpenRouteropenai/gpt-5.4gpt

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Quick Info

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

Cost

Input token cost: $2.50
Output token cost: $15.00

Limits

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

Transparent token rates

Compare GPT-5.4 pricing

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

OpenRouter

Official sourceComparison

OpenRouter's official comparison page frames GPT-5.5 and GPT-5.4 as both accessible through the same OpenRouter API, so developers can switch by changing the model slug rather than re-integrating. Both models are listed with a 1,050,000-token context window, and the comparison is useful for developers deciding between Pricing on OpenRouter is $5/M input and $30/M output for GPT-5.5 versus $2.50/M input and $15/M output for GPT-5.4, meaning GPT-5.5 carries roughly 2x the token cost. Both are provided by OpenAI, so the relevant trade-off is context length parity versus price, with GPT-5.4 positioned as the lower-cost option on an iden

OpenRouter

Official sourceBenchmark

OpenRouter lists GPT-5.4 (slug openai/gpt-5.4) as OpenAI's latest frontier model that unifies the Codex and GPT lines into a single system, released on March 5, 2026. It supports a 1M+ token context window (922K input / 128K output), text and image input modalities, and is positioned as a strong default for both genera Listed pricing on OpenRouter is $2.50 per 1M input tokens and $15 per 1M output tokens, with a weighted-average effective price of roughly $0.85/M input and $15.07/M output reflecting caching and discounts. The model is served across multiple providers via OpenRouter routing (OpenAI, OpenAI Flex, Azure, Azure US, Azure