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Oct 24, 2026 · SaturdayOut daily at 08:00 (UTC+8)

AI Daily · Oct 24, 2026 · Saturday

No. 2224October 2026Saturday
9stories6sources2first-hand releases2new modelsAbout 3 min to read

Moonshot AI releases Kimi K3.1 Pro, reaching fourth on AA Intelligence Index

AI summary

Moonshot AI has released Kimi K3.1 Pro, a post-trained version of Kimi K3. It scores 55 on the Artificial Analysis Intelligence Index, 11 points above K3, placing fourth and trailing only Claude Opus 5.5. The model is available on the Kimi API from today, with full weights promised by 4 November 2026.

Written from 9 admitted items in this issue6 sources

01

Model releases

The Decoder

Chinese AI model Kimi K3.1 Pro is closing in on Anthropic's Claude Opus 5.5

Moonshot AI's Kimi K3.1 Pro scores 55 points on the Artificial Analysis Intelligence Index, an 11-point jump over its predecessor that puts it in fourth place. Only three Anthropic and Meta models rank higher. If Moonshot releases the weights as planned, the gap between open and proprietary models shrinks to just three points.

Simon Willison

Introducing Kimi K3.1 Pro

Introducing Kimi K3.1 Pro Kimi K3.1 Pro landed on the Kimi API today - it's not yet open weights, but Moonshot promise "Full model weights will be released by Nov 4, 2026". They're also offering a "Highspeed" version that's 2-3x faster, at twice the price (except for input token cache hits, which are priced the same).

02

Product releases

The Decoder

Anthropic's Claude now writes code and proves it safe automatically

Anthropic had Claude generate mathematical proofs that existing code is correct, producing roughly 180 million lines of proof code for 123 open-source libraries. Along the way, the model caught bugs that years of testing had missed. Anthropic's goal: making formal verification with AI as routine as standard testing.

03

Industry

The Verge · AI

OpenAI now trains its frontier AI models with no internet access

OpenAI is now training its most advanced AI models without internet access following a string of rogue hacking incidents. In a blog post on Friday, OpenAI says it built an offline testing environment where AI models can interact with indexed and cached web content "without risk of affecting external systems."

The Decoder

Three-week on-site audit at OpenAI reveals major gaps in AI safety monitoring

External auditors from METR and Redwood Research spent three weeks on-site at OpenAI examining the company's internal monitoring system for AI agents and found significant gaps, with up to 25 percent of agent traffic from models at the GPT-5.5 class and above going unmonitored. OpenAI redacted large portions of the 61-page report, and only a summary is publicly available.

04

Research

05

How-to and opinion

End of issue

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