Anthropic Ships Sonnet 5 With Agentic Safety and Pricing Details
1 July 20265 min read
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OpenAI released GPT-5.4 on 5 March across ChatGPT, the API and Codex, including GPT-5.4 Thinking in ChatGPT.
The company describes the model as its most capable and efficient frontier model for professional work, coding and agentic workflows, with a GPT-5.4 Pro option for complex tasks.
The launch sits inside a broader product push around Codex, Frontier and enterprise agents, where model performance is paired with tools for work execution.
Sourcing note: Capabilities and availability details are from OpenAI. This article does not independently benchmark GPT-5.4.
Why It Matters
Model releases still shape the market, but the more important pattern is how models are packaged into workflows. GPT-5.4 matters because OpenAI is presenting frontier capability as part of a work stack spanning ChatGPT, API and Codex.
Primary Sources
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Topics
OpenAIGPT-5.4CodexFrontier ModelsProfessional Work