# gpt-6-astra

GPT-6 Astra is a model for complex reasoning, coding, computer use, research, and document creation.

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## GPT-6 Astra Is the First Model OpenAI Classifies as Critical for Cybersecurity

DevFeed: [GPT-6 Astra Is the First Model OpenAI Classifies as Critical for Cybersecurity](<https://devfeed.tech/articles/gpt-6-astra-is-the-first-model-openai-classifies-as-critical-for-cybersecurity-41296.md>)

Original publisher: [Read original article](<https://www.infoq.com/news/2026/09/gpt-6-astra-critical-cyber/>)

Author: Steef-Jan Wiggers

Published: 2026-09-17T04:59:00Z

Content type: news

Language: en

Sources: [InfoQ](<https://devfeed.tech/sources/infoq.md>)

Topics: [Cybersecurity](<https://devfeed.tech/topics/cybersecurity.md>), [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Exploit](<https://devfeed.tech/topics/exploit.md>), [browser](<https://devfeed.tech/topics/browser.md>), [Kernel](<https://devfeed.tech/topics/kernel.md>), [Chain-of-thought](<https://devfeed.tech/topics/chain-of-thought.md>)

Tags: [agents](<https://devfeed.tech/tags/agents.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-ml-data-engineering](<https://devfeed.tech/tags/ai-ml-data-engineering.md>), [architecture](<https://devfeed.tech/tags/architecture.md>), [architecture-design](<https://devfeed.tech/tags/architecture-design.md>), [azure](<https://devfeed.tech/tags/azure.md>), [browser](<https://devfeed.tech/tags/browser.md>), [chain-of-thought](<https://devfeed.tech/tags/chain-of-thought.md>), [cloud](<https://devfeed.tech/tags/cloud.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [development](<https://devfeed.tech/tags/development.md>), [devops](<https://devfeed.tech/tags/devops.md>), [exploit](<https://devfeed.tech/tags/exploit.md>), [generative-ai](<https://devfeed.tech/tags/generative-ai.md>), [governance](<https://devfeed.tech/tags/governance.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>), [gpt-6-astra-critical-cyber](<https://devfeed.tech/tags/gpt-6-astra-critical-cyber.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [machine-learning](<https://devfeed.tech/tags/machine-learning.md>), [ml-data-engineering](<https://devfeed.tech/tags/ml-data-engineering.md>), [news](<https://devfeed.tech/tags/news.md>), [openai](<https://devfeed.tech/tags/openai.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>), [zero-day](<https://devfeed.tech/tags/zero-day.md>)

### AI overview

OpenAI classified GPT-6 Astra as the first model to reach its Critical cybersecurity threshold. Expert-led evaluations reported previously unknown vulnerabilities in a browser and an operating-system kernel, along with working exploit chains. The system card also reported a substantial decline in chain-of-thought monitorability.

### Source excerpt

OpenAI has classified GPT-6 Astra at the Critical cybersecurity threshold under its Preparedness Framework, a first. In expert-led testing the model found previously unknown vulnerabilities in a browser and an OS kernel and built working exploits. The same system card reports a substantial decline in chain-of-thought monitorability. By Steef-Jan Wiggers

## GPT-6 Astra Is Both Incredible and Frustrating

DevFeed: [GPT-6 Astra Is Both Incredible and Frustrating](<https://devfeed.tech/articles/gpt-6-astra-is-both-incredible-and-frustrating-34993.md>)

Original publisher: [Read original article](<https://creatoreconomy.so/p/gpt-6-astra-is-both-incredible-and>)

Author: Peter Yang

Published: 2026-09-09T14:27:15Z

Content type: opinion

Language: en

Sources: [Behind the Craft](<https://devfeed.tech/sources/behind-the-craft.md>)

Topics: [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [computer-use](<https://devfeed.tech/topics/computer-use.md>), [blender](<https://devfeed.tech/topics/blender.md>), [Godot](<https://devfeed.tech/topics/godot.md>), [Demo](<https://devfeed.tech/topics/demo.md>), [Tutorial](<https://devfeed.tech/topics/tutorial.md>), [3D](<https://devfeed.tech/topics/3d.md>)

Tags: [3d](<https://devfeed.tech/tags/3d.md>), [ai](<https://devfeed.tech/tags/ai.md>), [blender](<https://devfeed.tech/tags/blender.md>), [computer-use](<https://devfeed.tech/tags/computer-use.md>), [game](<https://devfeed.tech/tags/game.md>), [games](<https://devfeed.tech/tags/games.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>), [openai](<https://devfeed.tech/tags/openai.md>), [tutorial](<https://devfeed.tech/tags/tutorial.md>)

### AI overview

A hands-on opinion piece about OpenAI's GPT-6 Astra, describing strengths in games, 3D model creation, strategic thinking, and computer use, while noting problems that prevent it from becoming the author's daily driver. The article also outlines a workflow using Blender, Godot, and ChatGPT to build games.

### Source excerpt

What OpenAI's new model does well, where it falls short, and how I'm using it.

## llm 0.35

DevFeed: [llm 0.35](<https://devfeed.tech/articles/llm-0-35-31182.md>)

Original publisher: [Read original article](<https://simonwillison.net/2026/Sep/7/llm/>)

Author: Simon Willison

Published: 2026-09-07T23:54:54Z

Content type: release

Language: en

Sources: [Simon Willison's Weblog](<https://devfeed.tech/sources/simon-willison-s-weblog.md>)

Topics: [Large Language Model](<https://devfeed.tech/topics/llm.md>), [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>)

Tags: [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>), [gpt-6-astra-9](<https://devfeed.tech/tags/gpt-6-astra-9.md>), [llm](<https://devfeed.tech/tags/llm.md>), [llm-631](<https://devfeed.tech/tags/llm-631.md>), [openai](<https://devfeed.tech/tags/openai.md>), [openai-463](<https://devfeed.tech/tags/openai-463.md>), [release](<https://devfeed.tech/tags/release.md>)

### AI overview

llm 0.35 is a release that adds the OpenAI model gpt-6-astra for GPT-6 Astra.

### Source excerpt

Release: llm 0.35 New OpenAI model: gpt-6-astra for GPT-6 Astra. Tags: openai, llm, gpt-6-astra

## GPT-6 Astra, computer use, and longer-running agents

DevFeed: [GPT-6 Astra, computer use, and longer-running agents](<https://devfeed.tech/articles/you-keep-reopening-the-same-decision-at-midnight-because-checking-it-costs-a-weekend-you-don-t-have-gpt-6-astra-is-about-to-give-you-your-weekends-back-40081.md>)

Original publisher: [Read original article](<https://natesnewsletter.substack.com/p/gpt-6-astra-research-decisions>)

Author: Nate

Published: 2026-09-07T13:03:27Z

Content type: opinion

Language: en

Sources: [Nate's Substack](<https://devfeed.tech/sources/nate-s-substack.md>)

Topics: [computer-use](<https://devfeed.tech/topics/computer-use.md>), [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>)

Tags: [agents](<https://devfeed.tech/tags/agents.md>), [astra](<https://devfeed.tech/tags/astra.md>), [computer-use](<https://devfeed.tech/tags/computer-use.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>)

### AI overview

The article considers how better computer use and longer-running agents could make more possibilities worth exploring, and discusses what work to reconsider giving GPT-6 Astra.

### Source excerpt

Better computer use and longer-running agents make more possibilities worth exploring. What to reconsider, and how to give Astra the work.

## GPT-6 Astra and Fable 5.1: Starting and Reviewing Self-Directed Work

DevFeed: [GPT-6 Astra and Fable 5.1: Starting and Reviewing Self-Directed Work](<https://devfeed.tech/articles/executive-briefing-how-to-check-work-you-didn-t-watch-get-made-40082.md>)

Original publisher: [Read original article](<https://natesnewsletter.substack.com/p/gpt-6-astra-self-directed-agents>)

Author: Nate

Published: 2026-09-06T15:03:01Z

Content type: opinion

Language: en

Sources: [Nate's Substack](<https://devfeed.tech/sources/nate-s-substack.md>)

Topics: [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>), [Fable](<https://devfeed.tech/topics/fable.md>)

Tags: [fable](<https://devfeed.tech/tags/fable.md>), [gpt](<https://devfeed.tech/tags/gpt.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>)

### AI overview

The article discusses changes involving GPT-6 Astra and Fable 5.1, focusing on starting self-directed work with minimal input, how long it can run without supervision, and the role of the user when it returns.

### Source excerpt

What changed this week, with GPT-6 Astra and Fable 5.1, is how little you have to say to start one, how long it runs without you, and what your job is when it comes back.

## The Pelican comparison grid for Astra is pretty interesting

DevFeed: [The Pelican comparison grid for Astra is pretty interesting](<https://devfeed.tech/articles/the-pelican-comparison-grid-for-astra-is-pretty-interesting-30510.md>)

Original publisher: [Read original article](<https://simonwillison.net/2026/Sep/4/astra-pelicans/>)

Author: Simon Willison

Published: 2026-09-04T23:59:05Z

Content type: opinion

Language: en

Sources: [Simon Willison](<https://devfeed.tech/sources/simon-willison.md>)

Topics: [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [ai-2-235](<https://devfeed.tech/tags/ai-2-235.md>), [comparison](<https://devfeed.tech/tags/comparison.md>), [cost](<https://devfeed.tech/tags/cost.md>), [generative-ai](<https://devfeed.tech/tags/generative-ai.md>), [generative-ai-1-981](<https://devfeed.tech/tags/generative-ai-1-981.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>), [gpt-6-astra-9](<https://devfeed.tech/tags/gpt-6-astra-9.md>), [images](<https://devfeed.tech/tags/images.md>), [llms](<https://devfeed.tech/tags/llms.md>), [llms-1-947](<https://devfeed.tech/tags/llms-1-947.md>), [model](<https://devfeed.tech/tags/model.md>), [openai](<https://devfeed.tech/tags/openai.md>), [openai-463](<https://devfeed.tech/tags/openai-463.md>), [pelican-riding-a-bicycle](<https://devfeed.tech/tags/pelican-riding-a-bicycle.md>), [pelican-riding-a-bicycle-142](<https://devfeed.tech/tags/pelican-riding-a-bicycle-142.md>), [reasoning](<https://devfeed.tech/tags/reasoning.md>)

### AI overview

The article compares GPT-6 Astra with GPT-5.6 Sol, Terra, and Luna by generating SVG pelicans riding bicycles at different reasoning levels. The author finds Astra's images generally better, while noting that lower reasoning levels can omit pelican legs and that Astra may cost more but use fewer tokens.

### Source excerpt

I got access to GPT-6 Astra this afternoon, so naturally I used it to generate SVGs of pelicans riding bicycles - at low, medium, high, xhigh and max reasoning levels (Astra doesn't support reasoning=none). Then I rendered those pelicans in a comparison grid with GPT-5.6 Sol, Terra, and Luna, and beyond being fun the result was surprisingly useful. See the grid for full quality images. Here's the transcript that created the GPT-6 Nova pelicans. There are a few interesting things that stand out from this grid. The Astra pelicans are much better. The very best GPT-5.6-Sol pelican (I liked xhigh better than max) is still pretty clearly a bunch of abstract shapes. Every single one of the Astra pelicans, from low to xhigh, looks better than that. The Astra max one is really good. Astra below max still doesn't reliably get the pelican legs on both sides of the frame. In terms of cost, Astra may be around twice the price of Sol ($10/million input, $50/million output, compared to $5/$30 for Sol), but it uses significantly less tokens at each of the levels, making the prices at the different levels closer than they might otherwise be. Astra low produces a better pelican than ANY of the GPT-5.6 Sol models at any level, for 9.55 cents. Spending 10 cents on any other model gets a much worse result. Look at the input token counts: Astra and Luna both used 16 input tokens, Sol and Terra used 26. That's interesting. I wonder if Astra and Luna are more related to each other than OpenAI let on? You are only seeing the long-form articles from my blog. Subscribe to /atom/everything/ to get all of my posts, or take a look at my other subscription options.

## Hands-on GPT-6 Astra review covering computer use, coding, hardware, Blender, and desktop app projects

DevFeed: [Hands-on GPT-6 Astra review covering computer use, coding, hardware, Blender, and desktop app projects](<https://devfeed.tech/articles/gpt-6-astra-is-a-banger-here-s-everything-i-ve-built-40015.md>)

Original publisher: [Read original article](<https://www.lennysnewsletter.com/p/gpt-6-astra-is-a-banger-heres-everything>)

Author: Claire Vo

Published: 2026-09-03T19:34:20Z

Content type: opinion

Language: en

Sources: [Lenny's Newsletter](<https://devfeed.tech/sources/lenny-s-newsletter.md>)

Topics: [gpt-6-astra](<https://devfeed.tech/topics/gpt-6-astra.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [computer-use](<https://devfeed.tech/topics/computer-use.md>), [coding](<https://devfeed.tech/topics/coding.md>), [blender](<https://devfeed.tech/topics/blender.md>), [Figma](<https://devfeed.tech/topics/figma.md>), [codex](<https://devfeed.tech/topics/codex.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [blender](<https://devfeed.tech/tags/blender.md>), [codex](<https://devfeed.tech/tags/codex.md>), [coding](<https://devfeed.tech/tags/coding.md>), [computer-use](<https://devfeed.tech/tags/computer-use.md>), [figma](<https://devfeed.tech/tags/figma.md>), [gpt-6-astra](<https://devfeed.tech/tags/gpt-6-astra.md>)

### AI overview

A hands-on review of GPT-6 Astra covering computer use, browser-based QA, coding projects, a hardware hack, Blender 3D asset creation, and a Mac app. The episode also discusses speed, cost, and whether Astra is suitable as a daily driver.

### Source excerpt

Watch now | 🎙 My hands-on GPT-6 Astra review covers real production work in Figma, Flora, and Adio, one-shot coding wins 5.6 and Fable couldn't match, and a hardware hack I've chased for months