Test the golden zone (sub-threshold) in training
Bakken recommends that runners test the golden zone (sub-threshold) in their training.
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Bakken recommends that runners test the golden zone (sub-threshold) in their training.
You need to own your own memory in an agent system; as developers and engineers of these systems, we need to actually own our own memory, and engineer the capturing of traces into a system that allows for continual learning to be possible.
Supriya Subudhi advises understanding why you are using AI in the first place — whether for long-term or short-term benefits — before adopting it, noting that many PMs receive company mandates to use AI without understanding why.
The speaker advises baking the entire journey of using AI into what people are already doing in the app rather than building a standalone feature people must find, and stresses that education and awareness are super critical for AI feature adoption. At Bumble this meant asking users for feedback when they were adding pictures, and prompting users who hit a wall finding matches to check the feedback in their profile and maybe change something.
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Carson describes an additional QA process: a QA agent spins up a child of the builder to run QA; every builder records a video of the feature being used and passing tests (for UI-facing features you have to look at it); in Devin the built-in 'test' feature builds test cases, records a video, and gives green or red; a video that's all green means what you think is happening is happening and it visually looks good; if your agent harness lacks built-in video recording, you should build it — it's hard but worth it; you should spin up as many agents as you can as long as you're not holding up your merge queue, since it's cheap; a wonderful engineer named Dale recently joined and helped install the QA process.
Build a measure at every layer of the AI platform, so decisions can be made quickly and measured effectively.
Lakshya A. Agrawal advises that including domain-specific information in AI system prompts can make models perform much better, and GEPA can help discover that automatically.
Roman Ugarte advises building the best-in-class experience for things that are going to happen, translating AI capabilities into amazing products for customers as the models get stronger.
Erina Karati recommends approaching agent state problems systematically: run controlled experiments and keep only changes that survive measurement, rather than trusting one demo or endlessly hand-tuning prompts.
Irina's team recommends that instead of manually tuning a prompt or watching one nice demo, you should define a scenario suite, run the agents, collect traces, score the data, and only keep changes that actually improve the score.
Irina's team recommends against using a single vague metric like 'agent quality' because it will hide all the interesting failures. Instead, use a balanced scorecard.
Irina's team recommends keeping the editable policy surface really small and freezing the harness, the scenarios, and the metrics so only the part of the system you actually want to optimize is exposed. The auto research layer should not have permission to randomly rewrite the whole code base. A small editable policy surface gives the search process room to improve behavior while preventing it from gaming the evaluation directly. The policy space should prevent the LM from gaming the evaluation directly.
Irina's team recommends against optimizing only one metric because it can create bad behavior: if you only optimize for diffusion, agents may learn to overshare everything, and if you only optimize for memory recall, you might create noisy or stale memories. The balanced scorecard keeps the system honest and prevents the auto research agent from gamifying the system to increase one specific score.
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Irina's team recommends using controlled scenarios to evaluate long-horizon agent behavior. Scenario design matters because social behavior is otherwise fuzzy: letting agents wander may look cool and produce nice interactions, but it is very hard to evaluate whether the system actually improved.
An observability layer is the most important utility for an agent architecture. Agents must be able to log out what's going on with their sessions, turns, tool calls, and any errors happening. Log 100% of traces to an observability tool like W&B Weave so the team can learn from them, and use Weave to move from production to offline analysis, driving insights and identifying behaviors.
Tim Sweeney recommends investing in agent-oriented observability, saying it is critical that agents log what is going on with their sessions, turns, tool calls, and any errors that happen.
Tasks and evals are the new world of CI. Implement tasks, which are essentially unit tests for your models, and evaluate those models in a loop. Emit evaluation results to Weave to have a common dashboard for making go, no-go decisions on prompt or architectural changes, and use a shared dashboard to promote the best model forward with confidence.
For managers: invest in agent-oriented observability — log your sessions, turns, tools, and feedback — which introduces the ability to catch a new class of bugs called behavioral bugs, not exceptions or performance issues. Develop a practice where researchers sit on the same scrum team as software engineers, developing tasks and viewing performance metrics as true go, no-go decisions. Use humans as a necessary judge to complement LLM judges, because there are behavioral nuances that LLMs will not catch. Manually review traces as a team at the end of the week on a board, looking at the best and worst traces to understand how your model is performing.
Speaking to managers, Tim Sweeney offers tips for being successful with agents: invest in observability, treat tasks/evals as CI, use human judges, and add value through context and tools.
Recoverability should be part of the admission decision rather than something strategized or planned only after the AI agent is deployed.
Use saved training trajectories and a controlled intervention to explain a failure, separating equilibrium theory from observed empirical stability.
Demonstrate all 3 repaired bugs and defend why a passed gradient check is necessary but not sufficient for generalization.
Use the tractable fixture and posterior predictive results to separate approximation, sampling and model errors; justify one revised modeling assumption.
Choose sources → to get a library of your own and a daily brief.
Map each implemented component to the original paper and explain 2 reduced-model failure modes without claiming full-scale reproduction.
Use calibration and shift measurements to justify a monitoring or abstention threshold, and give an explicit confounding counterexample to causal feature-attribution claims.
Defend a causal claim or refusal using the DAG, numerical estimates and a counterexample showing why predictive model fit cannot establish identification.