JIT-Agent模型可以即时合成适用于任意现成LLM的任务自适应智能体绑定，显著提升模型性能，值得一试。
JIT-Agent模型旨在即时合成适用于任意现成LLM的任务自适应智能体绑定，通过固定四模块协议生成可组合的智能体绑定，并在给定任务上定制绑定、修复绑定以实现稳定可靠执行，并通过从先前绑定配置的扩展档案中提炼性能信号来自我进化。DeepSeek-V4-Flash在DeepSearchQA和OdysseyBench上超越GPT-5.6，GLM-5.2提升至+20.2分。JIT-Agent生成的绑定在性能上与成熟的智能体运行时如OpenCode和Claude Code相当，并持续改善DeepSeek V4、Mimo-V2.5和Qwen3.6的多尺度模型家族。JIT-Agent是首个专为即时绑定生成而设计的模型，将绑定智能确立为与模型扩展正交的可训练、可转移和可累积的智能体能力维度。
JIT-Agent: Scaling Harness Intelligence via Just-in-Time Harness Evolution
Agent capability is not determined by the model alone. The agent harness, encompassing memory management, planning strategy, action protocol, and tool/skill orchestration, can dominate the contribution of the underlying foundation model. Yet harness design remains manual, task-specific, and fundamentally unscalable. We present JIT-Agent, a harness intelligence model trained to synthesize task-adaptive agent harnesses on the fly for arbitrary off-the-shelf agentic LLMs. We formalize the agent harness as a composable, machine-generatable artifact governed by a fixed four-module protocol, and train JIT-Agent to customize harnesses for a given task at hand, repair harnesses for stable and reliable execution, and self-evolve by distilling performance signals from an expanding archive of prior harness configurations. Equipped with JIT-Agent as a harness helper, DeepSeek-V4-Flash surpasses GPT-5.6 on DeepSearchQA (+9.1) and OdysseyBench (+4.3), while the already strong GLM-5.2 gains up to +20.2 points. Across controlled evaluations, JIT-Agent-generated harnesses are performance-competitive with mature agent runtimes such as OpenCode and Claude Code and consistently improve multi-scale model families of DeepSeek V4, Mimo-V2.5, and Qwen3.6. To our knowledge, JIT-Agent is the first model purpose-built for just-in-time harness generation, establishing harness intelligence as a trainable, transferable, and compounding dimension of agent capability orthogonal to model scaling.