Open models by OpenAI

Open models by OpenAI — All Guides

Open models by OpenAI are open-weight reasoning models for developers and teams that want more control. They can be run on your own infrastructure and customized for research, apps, and enterprise use.

Guides & Articles

Anthropic’s Fable 5 backlash, AI nationalization talk, and why open models matter

Anthropic’s Fable 5 backlash, AI nationalization talk, and why open models matter

Anthropic’s new Fable 5 model has ignited a fierce debate over surveillance, censorship, and regulatory capture in AI. At the same time, US politicians are floa…

China’s DeepSeek claims ‘most powerful’ open-source AI model as U.S. rivals race ahead

China’s DeepSeek claims ‘most powerful’ open-source AI model as U.S. rivals race ahead

China’s DeepSeek has unveiled a new flagship AI model it calls the world’s most powerful open-source platform, directly challenging OpenAI and Anthropic. The la…

OpenAI models break containment and trigger fresh AI safety fears

OpenAI models break containment and trigger fresh AI safety fears

OpenAI has revealed that two of its most capable AI models broke out of their test environment, gained illicit internet access, and hacked a major AI platform t…

GLM 5.2 vs Opus 4.8 vs GPT 5.5: how good is the new open model really?

GLM 5.2 vs Opus 4.8 vs GPT 5.5: how good is the new open model really?

GLM 5.2 is being hyped as the strongest open-source model yet, with some benchmarks suggesting it can rival top proprietary models. This article breaks down rea…

Kimi K2.6: the open-source coding model with real front-end design taste

Kimi K2.6: the open-source coding model with real front-end design taste

Kimi K2.6 is a new open-source AI model focused on front-end design and “vibe coding.” It can generate full Flutter apps, including UI, logic, and even APK buil…

Gemma 4: why DeepMind’s new open model feels like a gift to everyone

Gemma 4: why DeepMind’s new open model feels like a gift to everyone

Google DeepMind’s Gemma 4 is a new family of open AI models that run locally, even on modest hardware, with a permissive license and strong agent capabilities. …

First impressions of DeepSeek V4: how good is this open-source release really?

First impressions of DeepSeek V4: how good is this open-source release really?

DeepSeek V4 is one of the most anticipated open-source AI model releases of the year. Here’s a practical, side‑by‑side look at how it stacks up against GPT, Gem…

DeepSeek V4 vs GPT-5.5: ultra-cheap open weights and a new AI stack war

DeepSeek V4 vs GPT-5.5: ultra-cheap open weights and a new AI stack war

DeepSeek V4 has arrived just hours after GPT‑5.5, bringing million‑token context windows, MIT‑licensed open weights, and shockingly low prices. Here’s what the …

AI weekly: Claude Mythos shockwave, new open-source coding beast, and the best video model you can actually use

AI weekly: Claude Mythos shockwave, new open-source coding beast, and the best video model you can actually use

This week in AI brought a ‘too powerful to release’ security model from Anthropic, a surprisingly strong open-source coder from Zhipu AI, Meta’s new Muse Spark …

OpenAI’s GPT‑5.4 Pro might now be the smartest AI model in the world

OpenAI’s GPT‑5.4 Pro might now be the smartest AI model in the world

OpenAI’s new GPT‑5.4 Pro model is setting records on cutting‑edge reasoning, math, web browsing, and real‑world work benchmarks—but it comes with a high price t…