代理工具

Agent、MCP、coding agent、工作流自動化與評測。

代理工具

Grok 4.5 Comes to GitHub Copilot With a 500K Context Window and Cross-IDE Reasoning Controls

GitHub has begun rolling out Grok 4.5 across Copilot’s IDE integrations, CLI, cloud agent, and desktop app, offering a context window of up to 500,000 tokens, text and image input, and three reasoning effort levels. Enterprise administrators must explicitly enable the model policy, while GitHub has so far disclosed only observations from internal terminal-based tasks, with no comparable Copilot benchmark results.

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170,000 Votes Across 28 Models Show That Adding More Agents Cannot Eliminate Shared Errors

A new study evaluated 28 language models on four types of binary screening tasks and found that models often fail together on the same samples, leaving majority voting with an error floor that cannot be eliminated by enlarging the committee. The research also shows that the optimal acceptance threshold depends on the error correlations for positive and negative cases, meaning a fixed simple-majority rule may not be the safest choice.

最新模型

A Single Sentence-Final Tag Swings Model Agreement Rates by 64 Points, Suggesting Anti-Sycophancy Training May Learn Only Surface Patterns

A reproducible test covering 45 models found that changing a neutral question into one ending with a confirmation-seeking tag can produce a 64-percentage-point spread in agreement rates. Newer models more often resist affirmative leading language, but every model became more agreeable when faced with uncertain phrasing, suggesting that the improvement may reflect pattern-based rules rather than robust judgment.

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PlanPhys Dissects Long-Horizon Agent Training: On-Policy Distillation Is More Stable Than GRPO Under Sparse Rewards

Using controllable synthetic environments, PlanPhys separately examines how pretraining, GRPO, single-teacher distillation, and multi-teacher distillation develop long-horizon planning capabilities. Experiments show that a small number of long trajectories and explicit state transitions improve generalization, but distillation can instead damage existing capabilities when teacher knowledge or planning patterns are incompatible.

GitHub Repo

Open Secure AI Alliance Sets Out to Build an Open Agent Defense Stack, but Shared Tools and Governance Have Yet to Materialize

NVIDIA and more than 30 organizations have formed the Open Secure AI Alliance, with plans to share models, agent frameworks, identity, isolation, and vulnerability-scanning technologies. Its initial members have identified foundational components including NOOA, SPIFFE/SPIRE, Safetensors, Lightwell, and MDASH, but the alliance has yet to announce a shared repository, testing specifications, or a delivery timeline.