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GPT-5.4

Model Covered in 14 stories + Follow

GPT-5.4 (model) is an OpenAI GPT family model used in recent deployments and product updates, including availability on Amazon Web Services’ Bedrock and enterprise use by organizations such as Hyatt. Coverage also includes OpenAI’s release of smaller GPT-5.4 mini and nano variants for coding, tool use, and multimodal tasks, alongside pricing changes that position GPT-5.4 as a lower-cost option after broader model price cuts. In parallel, GPT-5.4 has been referenced as a benchmark in other agents and AI systems, including cost-aware routing approaches in cybersecurity workflows and comparisons for computer-use and agent performance.

Updated 15 September 2026

Specifications

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Latest developments

Timeline

Month Quarter Year

Q3 2026

OpenAI releases GPT-5.6 model family with efficiency improvements and significant price reductions Model release

Microsoft launches MAI-Cyber-1-Flash cybersecurity model and Project Perception agentic security platform Product launch

Prentis AI lab co-founded by Reid Hoffman and Marc Pincus raises $100 million at $1 billion valuation Funding

Q2 2026

Microsoft and OpenAI amend partnership agreement to make license non-exclusive and expand cloud provider options Partnership

Q1 2026

OpenAI releases GPT-5.4 with 1M-token context window; Google launches Gemini Embedding 2 and upgrades Gemini 3.1 Flash Lite Model release

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