OpenAI Blog August 24, 2026

Advancing price-performance for developers with GPT‑5.6 in Kiro

OpenAI has released GPT‑5.6 in Kiro, a new version aimed at improving price-performance for developers. The update assists developers in planning, building, reviewing, and testing software more efficiently. By integrating GPT‑5.6 into the Kiro platform, users can expect a more cost-effective and powerful toolset for their development workflows.

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OpenAI Blog

Jul 30

Advancing the price-performance frontier with GPT-5.6

Explore lower GPT‑5. 6 pricing for Luna and Terra—and how OpenAI’s more efficient models help enterprises deploy AI workflows at scale.

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Aug 20, 2024

Fine-tuning now available for GPT-4o

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Feb 27, 2025

OpenAI GPT-4.5 System Card

We’re releasing a research preview of OpenAI GPT‑4. 5, our largest and most knowledgeable model yet.

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Nov 13, 2025

Introducing GPT-5.1 for developers

GPT-5. 1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.

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Aug 7, 2025

First look at GPT-5

See how a group of leading developers use GPT-5 for the first time.

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Jun 26

Previewing GPT-5.6 Sol: a next-generation model

OpenAI previews GPT-5. 6 Sol, a next-generation model with stronger capabilities in coding, science, and cybersecurity, paired with its most advanced safety stack.

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