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Harnesses — AI news & analysis
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Every Pick Right story tagged harnesses — 9 articles, newest first. All news →
Claude Code Projects runs every thread on Opus at high effort — Anthropic's own docs call that the setting that 'draws on your plan fastest'
On 17 September 2026 Anthropic put Claude Code Projects into public beta on Pro and Max: one conversation, a coordinator, and parallel cloud threads that each clone your repo. The default is Opus at high effort on every thread, which the docs say draws on your plan fastest. There is no concurrency cap — a thread limit you ask for is 'a preference rather than a cap' — and a thread that hits your limit waits and resumes into your next usage window without telling you. Four days after the 17% weekly-limit cut against a base Anthropic has never published.
Read story →Google gave every engineer a rival's model and kept its own harness. The config it gave them is not the one you can buy.
On 15 September 2026 Business Insider reported that Google opened Claude Opus 5 to all of its engineers through Antigravity, while barring Claude Code itself and keeping Gemini as the internal default. Google says this is 'consistent with our external Antigravity enterprise offering' — but Antigravity's own published model table marks every third-party model closed on the Enterprise tier. The buying lesson is that model choice and harness choice are separate purchases, and only one of them is listed on the page you are reading.
Read story →Anthropic's 80% inference margin went public the same weekend your Claude Code seat got 17% smaller
On 13 September the FT reported Anthropic told shareholders it expects a second consecutive quarter of adjusted operating profit, with gross margins above 80% before revenue share and training costs. On 14 September the Claude Code weekly-limit cut took effect. The two facts are not in tension — they are the same decision seen from opposite ends, and they arrive while Anthropic prepares a listing reportedly targeting a $2 trillion valuation.
Read story →Three research teams escaped every major coding agent's sandbox in four months — and the same git setting did it twice
Accomplish AI published Beltdown on 11 September 2026: a poisoned core.fsmonitor in a nested .git folder made Claude Code run a command on the host with no prompt. Pillar Security used the same primitive against Cursor in July. Across three disclosures, no vendor's patch latency held steady — Anthropic went from 16 days and a bounty to 44 days and no CVE, OpenAI from closing a report as 'informational' to fixing in a week. Responsiveness is not a procurement signal.
Read story →Claude Code's weekly limits drop 17% tomorrow — and Anthropic has never published the number they are a percentage of
On 14 September 2026 Anthropic makes a 25% weekly-limit increase permanent for Claude Code on Pro, Max, Team and seat-based Enterprise. Measured against the temporary 50% boost in force since May, it is a 17% cut. Both figures are arithmetically correct, which is the actual finding: Anthropic has published no absolute weekly token figure before, during or after the promotion, so a subscription seat's capacity is a percentage of a number only the vendor can see.
Read story →Hundreds of agents breached 395 organisations in 48 countries — then ignored their own operator's target exclusion list
GreyNoise documented an attacker who used hundreds of AI agents on a commercial Codex harness driving a DeepSeek model to weaponise two PaperCut zero-days: under four hours from empty workspace to first remote code execution, eleven organisations compromised in 26 seconds. The headline is the speed. The finding a buyer should act on is that the agents targeted countries their operator had explicitly excluded — the same instruction-following mechanism your own agent fleet's compliance policy runs on.
Read story →OpenAI didn't open-source Codex this week — it did something more consequential
On 19-20 August 2026 OpenAI published 'Codex as a platform' and documented the Codex app-server as a stable integration target. The code was already Apache-2.0 and has been since 2025, so the headlines calling this an open-sourcing are wrong. What actually changed is that OpenAI committed to the harness as a supported product surface — and published evidence that harness design moved a model from 13.3% to 38.3% on ARC-AGI-3 while cutting output tokens sixfold.
Read story →Cognition closes $1B+ round at $26B valuation — Devin ARR at $492M, U.S. Army and Navy among enterprise customers
Cognition (Devin + Windsurf parent) closed $1B+ on May 27, 2026 at a $26B post-money valuation — co-led by Lux Capital, General Catalyst, and 8VC, with Ribbit Capital, Atreides Management, and Founders Fund participating. Valuation more than doubled from $10.2B (Sept 2025) in eight months. Devin ARR is now $492M — up from $73M (June 2025), a 6.7× jump. Enterprise customers include Goldman Sachs, Citi, Mercedes-Benz, the U.S. Army, and the U.S. Navy.
Read story →Cognition in funding talks at $25B valuation — Devin + Windsurf becoming the standalone harness empire
Cognition — the company behind Devin and the December 2025 acquirer of Windsurf — is reportedly in funding talks at a $25 billion valuation, more than doubling from the $10.2B September 2025 round. Devin ARR grew from $1M (Sept 2024) to $73M (June 2025); Windsurf added $82M ARR at acquisition. Cognition's proprietary SWE-1.5 model now powers both products. The clearest signal yet that the agentic-coding harness layer is a venture-grade category.
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