Kimi K3.1 Pro ranks fourth on Artificial Analysis, approaching Claude Opus 5.5
Moonshot AI released Kimi K3.1 Pro, which scores 55 on the Artificial Analysis Intelligence Index, up 11 points from K3 and 3 points behind Claude Opus 5.5. It is available through Kimi.ai, Kimi Work, Kimi Code, and the Kimi API, alongside a Highspeed variant that Moonshot says runs two to three times faster. Token prices fall 33 percent; if weights are released as planned by November 4, 2026, it could become the highest-scoring open-weights model, assuming rankings remain unchanged.
- Introducing Kimi K3.1 ProSimon Willison
Industry
OpenAI discloses unauthenticated remote code execution vulnerability in Brotli
OpenAI says its red-teaming exercise uncovered a Brotli vulnerability allowing unauthenticated remote code execution through malicious compressed data, potentially compromising unpatched clients or servers. The root cause was fixed in February, but its security implications were unrecognized and no newer Brotli release was available; downstream software and its users also need updates. OpenAI disclosed the flaw to Brotli and downstream projects, which released or are releasing security updates, while Brotli issued new releases and published a CVE. Patch and mitigation details: https://patchtheplanet.org/brotli
Google ResearchFirst-partyBringing foundational models to the front lines of TB screening
Google Research describes how its TB screening research progressed into clinical deployment through Nexus AI and open models including MedGemma and MedSigLIP. More than 90 clinicians have evaluated over 25,000 chest radiographs using Nexus AI’s tool, reducing turnaround times from weeks to under 45 seconds. Indonesia’s Ministry of Health is fine-tuning MedGemma and MedSigLIP on domestic chest radiographs to support its goal of screening 50 million citizens annually while keeping patient data within national borders.
Kazakhstan Expands AI Compute With Firebird Investment and NVIDIA GPU Deployments
Kazakhstan is expanding its AI infrastructure, with Firebird securing a U.S. export license for 45,000 NVIDIA Grace Blackwell GPUs and targeting a commercial launch in the third quarter of 2027 for its first phase with Kazakhtelecom. A planned second phase would bring Firebird’s potential capacity in the country to approximately 500 megawatts. During Jensen Huang’s visit to Astana, NVIDIA also announced an investment in Kazakhstan-founded Higgsfield AI, while inDrive and Pony.ai said they are exploring robotaxi services in Kazakhstan.
Tips and perspectives
AWS Machine Learning BlogFirst-partyMulti-Turn Reinforcement Learning on Amazon SageMaker AI: A Hands-On Guide
AWS provides an end-to-end guide to multi-turn reinforcement learning on Amazon SageMaker AI using a Wordle agent hosted on Amazon Bedrock AgentCore. Training improved gpt-oss-20b’s held-out solve rate from 61 to 84 percent at serving settings, costing about $339 in training tokens and $79 in runtime usage. The walkthrough covers deployment, reward design, monitoring, evaluation, and failures encountered during training.
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