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September 20264 stories

Google’s Gemini 4 Argon goes to cyber defenders first

Google’s own tests put its new flagship first on 12 of 18 benchmarks. An independent index scores it level with GPT-6 Astra and behind Claude Opus 5.5, and there is no date for a wider release.

Google announced Gemini 4 Argon, its new flagship AI model, on September 30. For now it goes only to a group of trusted cyber defenders and to Google’s own teams, and Google gave no date for developers or consumers. Google says Argon leads its rivals on most of the tests it published. Artificial Analysis, which tests models independently, scores it level with OpenAI’s GPT-6 Astra.

4 min read

AI ModelsSep 25

Google’s Gemini 4 has entered post-training

DeepMind’s new chief wants an early version out as soon as possible.

Koray Kavukcuoglu, the new head of Google DeepMind, said this week that Gemini 4 has entered post-training. He wants to release an early version as soon as possible, “much earlier” than the end of the year. He gave no date, and safety testing is still under way.

4 min read

AI ModelsSep 22

Claude Opus 5.5 cuts token prices by 20%

It tops one independent index. Most other claims come from Anthropic.

Anthropic released Claude Opus 5.5 on September 22 at $4 per million input tokens and $20 per million output tokens. It says the model matches its top Fable 5.1 on most work, and one independent index ranks it first.

5 min read

Safety & SecuritySep 13

Anthropic’s CEO wants slower AI progress

The plan now needs rules that rivals can verify.

Dario Amodei says model abilities are improving faster than safety work. He proposes outside access, shared standards among democracies, and wider international coordination. His timelines are warnings, not proven forecasts.

5 min read