Tech article
OpenAI launches GPT-5.4 with Pro and Thinking versions
Publisher description: GPT-5.4 is billed as "our most capable and efficient frontier model for professional work."
TechCrunch | Mar 5, 2026 | Russell Brandom
Automated excerpt
On Thursday, OpenAI released GPT-5. 4, a new foundation model billed as “our most capable and efficient frontier model for professional work. ” In addition to the standard version, GPT-5. 4 is also available as a reasoning model (GPT-5. 4 Thinking) or optimized for high performance (GPT-5. 4 Pro). The API version of the model will be available with context windows as large as 1 million tokens, by far the largest context window available from OpenAI. As part of the launch, OpenAI has reworked how the API version of GPT-5.
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