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News
Context Engineering Inside the Harness: 4 Mechanisms That Beat Context Overflow and Goal Loss on Long-Horizon Tasks
17+ min ago (263+ words) This article opens up that layer. Compaction, memory strategy, context budgeting, and todo-state are the machinery that turns a shallow loop into a deep agent. We look at how LangChain Deep Agents, Claude Code, Manus, OpenAI Codex, and Amazon Bedrock…...
Cognition Releases SWE-2: A Kimi K3 Post-Trained Coding Model That Matches Fable 5.1 on FrontierCode at 64% Lower Cost
6+ hour, 17+ min ago (358+ words) Is it deployable? Not on your own infrastructure. SWE-2 has no open weights and no standalone API. It runs only inside Devin: Desktop and CLI today, with Devin Web and Fusion rolling out. SWE-2 builds on the infrastructure and recipe…...
Can LLMs Engineer Their Own Agent Harness? ByteDance Seed's HarnessDev Says Only 34 of 64 Changes Generalize
1+ day, 8+ hour ago (312+ words) In Creation, every creator receives the same weak seed: passive file, search, and process primitives plus result and trajectory writers, with no loop, planner, verifier, retry, or stopping rule. Unmodified, it scores 0 everywhere. The creator gets a task-family spec, a…...
Anthropic Adds Plugin Evals to Claude Code: 6 Grader Types, a No-Plugin Baseline, and a CI Gate for Skills
1+ day, 9+ hour ago (308+ words) Deployable: Yes. It runs on Claude Code v2.1.269 or later against any directory with a plugin.json or.claude-plugin/plugin.json manifest, or a skills-directory plugin. Every eval run and judge grader is a real model call billed to your plan…...
Google Research Releases ToolGrad: Answer-First Framework Hits 99.8% Pass Rate for Tool-Use Data Generation
2+ day, 12+ min ago (279+ words) Is it deployable? Yes. The code is Apache-2.0, the ToolGrad-500 dataset and the 1B, 4B, and 12B models are on Hugging Face, and there is a PyPI package. ToolGrad reverses the order. It first constructs a ground-truth tool-use chain by actually executing APIs,…...
Meet Redis LangCache: A Managed Semantic Cache That Cuts LLM API Costs by Up to 90% and Returns Cache Hits Up to 15x Faster
2+ day, 7+ hour ago (391+ words) Is it deployable? Yes. LangCache is available today as a public preview on Redis Cloud, accessed through a REST API with Python and JavaScript SDKs, and Redis notes that features and behavior may change during the preview. Consider three requests…...
Meta AI Released Muse Spark 1.3: An Agentic Coding Model That Uses ~20% Fewer Tool Calls and ~25% Fewer Tokens Than Muse Spark 1.2
1+ week, 2+ day ago (371+ words) This week, Meta Superintelligence Labs released Muse Spark 1.3. It is the fourth Muse Spark release in five months, and the target is long-horizon agentic and coding work rather than single-turn generation. The framing in Meta’s post is usability: sustaining a…...
Perplexity Open Sources Lily: A Rust + Metal Inference Engine for Qwen3.6-35B-A3B on Apple Silicon
1+ week, 2+ day ago (722+ words) Perplexity has open sourced Lily, the local inference engine behind Hybrid Compute in Perplexity Computer. Built in Rust with custom Metal kernels for one model on one chip family, it averages 1.23x MLX-LM's prefill throughput and 1.35x its decode throughput on a…...
GLM-5.3-Flash vs Qwen3.8-Flash-Next: Two Chinese AI Labs Independently Converge on the Same Model Architecture
2+ week, 1+ day ago (384+ words) Two frontier open-weight models shipped within a day of each other this week. Z.ai released GLM-5.3-Flash, a 320B-parameter multimodal MoE model with 18B active parameters. Alibaba’s Qwen team released Qwen3.8-Flash-Next, a 125B model with 6B active parameters that previews the Qwen4 architecture. GLM…...
What Would Have to Be True for Agentic Coding to Replace Junior Engineers
2+ week, 3+ day ago (1066+ words) Not a prediction. A list of conditions, and what the evidence says about each one. I read every major model release. Most of them ship a coding number. The number goes up. The conclusion everyone draws is that junior engineers…...