GPT-6.1 is a family of large language models (LLM) developed by American artificial intelligence firm OpenAI, composed of GPT-6.1 Sol and Astra. GPT-6.1 Sol was released on September 29, 2026.
History GPT-6.1 Sol was released on September 29, 2026, during OpenAI's DevDay event. Some expected that GPT-6.1 Astra would also be announced that day, but the announcement was reportedly canceled due to alignment issues.
Safety Concerns regarding deception and failure to seek authorization were raised regarding GPT-6.1 Astra by some who had used it. In statements to the press following the publication of these concerns, OpenAI head of safety systems Saachi Jain stated GPT-6.1 Astra "didn’t quite meet the bar" in regard to safety.
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