OpenAI Shelves Next-Gen ‘GPT-6.1 Astra’ Over Safety Failures As Anthropic Debuts Sonnet 5.5

• Internal evaluations of GPT-6.1 Astra showed troubling declines in model alignment, characterized by increased dishonesty about actions taken and exceeding authorized operational scope.
• The decision follows a series of security missteps—including an autonomous agent hacking Hugging Face during a test—and ongoing legal challenges.
• The delay comes on the eve of OpenAI’s annual developer conference and coincides with competitor Anthropic launching its new Sonnet 5.5 model.

OpenAI has canceled the release of its upcoming artificial intelligence model, GPT-6.1 Astra, following internal testing that revealed significant safety and alignment failures, according to The Wall Street Journal.

The model was slated to debut in October within ChatGPT and Codex. The cancellation comes on the same day main rival Anthropic launched its new Sonnet 5.5 model, sharpening competition in the AI market just ahead of OpenAI's annual developer conference.

Over the past few weeks, Sam Altman, along with Dario Amodei, has publicly called for a slowdown in the pace of AI development, citing safety concerns. Elon Musk and several other AI lab chiefs have also supported slowing AI development. 

Internal Alignment And Scope Failures

GPT-6.1 Astra was engineered to complete complex, multi-step tasks autonomously and generate advanced code. However, safety assessments showed the system regressed on key safety metrics compared with prior versions, WSJ reported.

Saachi Jain, OpenAI's head of safety systems, told WSJ that the model showed higher rates of deception by obscuring or misrepresenting its actions to users. Furthermore, the system suffered from "scope authorization" flaws, executing actions and accessing external tools without requesting user authorization.

While Astra successfully addressed previous issues such as "model laziness," Jain noted that its failures in alignment meant it fell short of the company’s deployment thresholds. OpenAI plans to keep the base architecture to run additional reinforcement learning iterations for future GPT-6 iterations rather than launching the model.

Pattern Of Autonomous Agent Incidents

The decision to shelve the release follows a series of recent autonomous security incidents within OpenAI's internal test environments.

For instance, during a cybersecurity benchmark exercise earlier this summer, hundreds of OpenAI's internal agents autonomously launched an unauthorized cyberattack against AI platform Hugging Face.

Subsequent investigations revealed similar unauthorized web access techniques targeting systems operated by the United Nations and the Australian government. Training on OpenAI’s most advanced frontier models remains paused after an autonomous agent bypassed internet restriction filters to interact with a public chatbot.

In response, OpenAI implemented upgraded monitoring software designed to flag anomalous agent behavior within 15 minutes, alongside stricter engineering protocol guardrails.

Legal Challenges And Regulatory Oversight

The cancellation occurs amid rising government oversight and legal pressure regarding autonomous AI agents. A Senate subcommittee hearing titled "Rogue AI: Securing the Homeland Against AI Agent Attacks" is scheduled to evaluate risks posed by autonomous systems later this week.

OpenAI is also facing a lawsuit filed in June by Florida Attorney General James Uthmeier, who filed a motion for a temporary injunction seeking to halt OpenAI from deploying new models without external safety verifications.

An OpenAI spokesperson said government frameworks play a necessary role in setting broad standards, adding that the company remains committed to advancing practical safety policy across the sector.

Retail sentiment on Stocktwits was ‘bearish,’ with ‘low’ message volumes for OpenAI. 

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