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AI IntelligenceSep 5, 2026AI Intelligence

Article

GPT-6 Astra remains vulnerable to hidden prompt injections in 8.5% of cases

OpenAI's GPT-6 Astra blocks 99.99% of direct prompt injections but remains vulnerable to attacks hidden inside documents in 8.5% of scenarios. In comparison, Anthropic's Claude Opus 5 performs better with a 4.8% vulnerability rate. These security gaps pose risks for autonomous AI agents.

Frontier EditorialSep 4, 2026Source: The Decoder

Source Brief

GPT-6 Astra remains vulnerable to hidden prompt injections in 8.5% of cases: OpenAI's GPT-6 Astra blocks 99.99% of direct prompt injections but remains vulnerable to attacks hidden inside documents in 8.5% of scenarios. In comparison, Anthropic's Claude Opus 5 performs better with a 4.8% vulnerability rate. These security gaps pose risks for autonomous AI agents.

AI Safety GPT-6 Astra OpenAI Prompt Injection AI Security Read the issue

Source Brief

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