GPT-6 news

Independent test puts GPT-6.1 Sol a point behind Astra

Artificial Analysis scores OpenAI’s new model 52, against 53 for GPT-6 Astra, at $0.72 per test task instead of $3.26. It is in Codex and ChatGPT Work now.

OpenAI released GPT-6.1 Sol on September 29, an upgrade to the GPT-6 Sol model it launched a week earlier. OpenAI says it nearly matches GPT-6 Astra at one-fifth of Astra’s token prices. The first independent test, by Artificial Analysis, broadly backs that: the model scores 52 on its index, one point behind Astra.

OpenAI scrapped GPT-6.1 Astra after it fell short on safety

The release was weeks away. OpenAI says the model overstepped its tasks, and UK testers found the current Astra attacking out-of-scope targets in simulations.

OpenAI has cancelled the release of GPT-6.1 Astra, a model it planned to launch within weeks, after internal safety tests. The Wall Street Journal first reported the decision on September 28. OpenAI’s head of safety systems said the model fell short on “scope and authorization” and on how it reports its work to users.

GPT-6 Astra and Claude Opus 5 cracked two Enigma messages

People directed both attempts. The expert who runs the message archive checked the results.

Two people used AI models to break German Army Enigma messages from 1941 that nobody had solved. GPT-6 Astra broke one that had resisted every attempt since 2005, and Claude Opus 5 broke another. Frode Weierud, who publishes the messages on his Crypto Cellar website, documented both breaks.

OpenAI is preparing GPT-6 Cyber, Fortune reports

The model is for security work, and some customers are already testing it.

Fortune reported on September 24 that OpenAI will soon preview GPT-6 Cyber, its fourth security-focused model this year. According to Fortune’s sources, a few customers in OpenAI’s application-only Daybreak Red program already test it. OpenAI has not confirmed the plan.

OpenAI’s GPT-6 Sol and Luna cut API prices in half

The first outside test finds them cheaper, not smarter.

OpenAI released GPT-6 Sol and GPT-6 Luna on September 22, two cheaper tiers below its top model, GPT-6 Astra. In the API, Sol costs $2 and Luna $0.10 per million input tokens, half of GPT-5.6’s current prices. Regular ChatGPT chats do not use them yet.

GPT-6 Astra is now on Amazon Bedrock

Buyers should read the data rules first.

Amazon says companies can use Astra through Bedrock APIs and connect it to work tools. The service offers a large context window, but retention and permission settings still need review.

GPT-6 Astra is powerful enough to need stricter cyber rules

OpenAI released GPT-6 Astra with better computer-use skills. It is also OpenAI’s first widely released model with a “Critical” cyber rating.