In todayâs issue:
Moonshot launches Kimi K3.1 Pro
Anthropic previews Claude Duet
OpenAI coordinates critical PHP fixes
MiniMax opens M3.1 Flash weights
Recursive ships local coding model Flint
DeepSeek open-sources DeepInfer
Ramp details its Laminar harness
Inception launches diffusion LLM Mercury 3
Databricks launches MemCurrent agent memory
Naive RAG beats agentic memory
And all the top AI dev news, papers, and tools.
Top Stories
Kimi K3.1 Pro
Moonshot AI introduced Kimi K3.1 Pro, its most capable 3T-class model and the first in the K3.1 series, with full weights due by November 4. It is a multimodal Mixture-of-Experts model with 2.8T total and 104B active parameters and a 1M-token context, post-trained from Kimi K3 with substantially more RL compute.
Coding results: On Terminal-Bench 4.0, K3.1 Pro scores 65.7%, ahead of GPT-6 Astra (58.2%) and just behind Claude Opus 5.5 (66.4%), and Moonshotâs charts put it first on SWE Marathon (51.7) and Agentsâ Last Exam (43.2). It also builds full projects in game engines such as Unreal, Unity, and Godot.
3D and CAD work: K3.1 Pro writes and runs scripts for Blender and CAD software to build and edit assets. On BenchCAD, which reconstructs 3D objects from multi-view renderings through CAD code, it scores 92.7% with tools, against 96.2% for Claude Opus 5.5 and 95.9% for GPT-6 Astra.
Finance and factual accuracy: It sets a state-of-the-art 64.4 on OfficeQA Pro v2 and improves on K3 by 7.2 points in financial modeling and 11.6 points in financial research on internal benchmarks. On Moonshotâs Kimi Hallu Bench Hard stress test, the claim-level hallucination rate fell from 23.4% for K3 to 8.3%.
Cyber controls: For the open-weight release, Moonshot removed cyber-related data from mid-training and the RL environment mix. A checkpoint without these controls solves 90.5% of its xdev-bench-hard exploit tasks at pass@3, while the final model reaches 81.0%.
Availability: K3.1 Pro and K3.1 Pro Highspeed, which runs 2 to 3x faster, are live on Kimi.ai, Kimi Work, Kimi Code, and the Kimi API.