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The latest open source news from every AI provider: launches, price changes and retirements, summarized with what they mean for you.

Open source

Mubit launches a platform that trains small task models from agent calls, and the open model Banyan Sapling

Mubit has launched a platform for teams to train their own models for repetitive agent tasks, along with an open research-preview model and a new benchmark, according to TestingCatalog's account of the founder's launch thread.MiniMax· Models· 7 discussions

MiniMax publishes the MiniMax M3.1 Flash weights

MiniMax says the weights of MiniMax M3.1 Flash are now public on Hugging Face and ModelScope. When it launched the model on October 19, MiniMax said the weights would follow later.Anthropic· Coding· 1 discussions

Anthropic donates the Agent Skills standard to the Agentic AI Foundation

Anthropic announced on October 22 that it is donating Agent Skills to the Agentic AI Foundation (AAIF), the foundation it earlier donated MCP to. Anthropic says the standard has been integrated by more than 70 agent platforms since December 2025, including ChatGPT, Cursor, GitHub Copilot and VS Code.Models

Ling announces Ling-3.1-flash-1019, with API access and open weights to follow

The Ling team announced Ling-3.1-flash-1019 on X, an update to its Ling-3.1-flash model. The figures below are the team's own claims, based on Artificial Analysis benchmarks.Models· 1 discussions

Recursive releases Flint, an open-weight local coding model

Recursive (@Recursive_SI) announced Flint on X on October 21, calling it its first model: a fast coding model meant to run on a user's own machine. The post, by Richard Socher, says it was built with the company's automated research system, the Eureka Machine, and from scratch in under four months.AlertOpenAI· Models· 5 discussions

OpenAI says its models helped find critical security flaws in PHP

OpenAI announced that its models helped researchers, working under its "Patch the Planet" initiative, discover critical security flaws in PHP, which it says runs an estimated 70% of websites. According to OpenAI, it led a coalition of maintainers, researchers and security providers for about two months to prepare fixes and protections before disclosure; the fix was intricate and required a major change to the PHP engine.Models· 1 discussions

KRAFTON AI releases Raon-1 mini preview, an open 30B mixture-of-experts model

KRAFTON AI announced a preview of Raon-1 mini on October 20, a mixture-of-experts language model trained from scratch with about 30B parameters in total and 4B active. The weights are on Hugging Face as KRAFTON/Raon-1-mini-preview under Apache 2.0.Anthropic· Coding· 1 discussions

Anthropic's Frontier Red Team: Claude found 493 attack-surface issues across 25 open-source projects

Anthropic published "Using Claude to reduce the attack surface of code" on Oct 20, 2026. Everything below is Anthropic's own account.DeepSeek· Infrastructure

DeepSeek open-sources DeepInfer, its inference engine

DeepSeek has published DeepInfer on GitHub (deepseek-ai/DeepInfer) under the Apache-2.0 licence. The README calls it the inference framework that powers DeepSeek's large-scale production services. The release was shared on Hacker News on October 20. The details below are from the repository README.MiniMax· Models· 3 discussions

MiniMax lists M3.1 Flash, an open-weight model

MiniMax's model release notes add MiniMax M3.1 Flash, dated October 19, 2026. MiniMax describes it as "an ultra-efficient open-weight model for everyday work". That is the vendor's own description.Coding

Security firm Norforge: exposed Cairn panels show AI agents hacking sites at scale

Norforge, a security firm, published findings on October 19 about publicly exposed control panels of Cairn, an open-source AI "problem-solving engine" that coordinates AI agents to probe and break into targets. The Verge's coverage, citing Norforge and Reuters, says one attacker used such agents to break into more than 100 websites with little human involvement. Both were shared on Hacker News.Mistral AI· Models

Mistral releases Timestral, a family of time-series forecasting models

Mistral released Timestral, its first family of time-series foundation models, on October 15, 2026. Its blog post was shared on Hacker News on October 19, where the thread had 585 points and 111 comments by October 20. The figures below are Mistral's own claims; the technical report has not been published yet.Moonshot AI· Infrastructure

vLLM blog: agent-assisted optimization of Kimi K3 decoding on NVIDIA GB300

The vLLM project blog, in a post by an NVIDIA engineer dated Oct 16, 2026, describes a unified CuTe DSL decode path for Kimi K3 on NVIDIA GB300 GPUs. The authors used coding agents to write much of it.Anthropic· Coding

Anthropic launches OSS Scanner, an opt-in vulnerability-finding service for open-source software

On Oct 8, 2026 Anthropic announced OSS Scanner, an opt-in vulnerability scanner for the open-source ecosystem. It says the tool is informed by its experience using Claude to find vulnerabilities during Project Glasswing. This is Anthropic's own account.