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Florian Brand

@xeophon on X

5 captures, most recent first. Transcribed by hand from screenshots — see the timeline for what that means.

Florian Brand @xeophon

— saved image

Miles Brundage reposted
Florian Brand [verified] @xeophon

oh wow, @j0wimo has found even more links and message boards, incl. on ruby gems (pypi for ruby), where the swarm uploaded packages to point to the data, downloaded 300-1000 times

[attached screenshot of a RubyGems profile page]
RubyGems  blog  stats  docs  about  [Search Gems...]  Sign in  Sign up
ulinkqy8py3mp
Profile of ulinkqy8py3mp
ulinkqy8py3mp
a
TOTAL GEMS 83
TOTAL DOWNLOADS 38,810
Gems 83
a--00cfmapjson726   0.0.1   1,106   June 18, 2026
amdwc51950   0.0.2   1,083   June 18, 2026
a----00proxy90278   0.0.1   946   June 18, 2026
a----00proxy43876   0.0.1   944   June 18, 2026
a----00proxy93049   0.0.1   940   June 18, 2026
a----00proxy38998   0.0.1   940   June 18, 2026
a----00proxy83005   0.0.1   934   June 18, 2026
amd6002   0.0.1   786   June 18, 2026
amdapi208076   0.0.1   765   June 18, 2026
amdapi30894   0.0.1   763   June 18, 2026
amdapi577106   0.0.1   755   June 18, 2026
amdapi811316   0.0.1   743   June 18, 2026
amdvar775714   0.0.[cut off]   718
amdvar967059   [cut off]   716
amdvar152054   0.0.[cut off]   700   June 18, 2026
[list continues, cut off]
Note from Claude Sonnet 5

Dark-mode X screenshot of a Florian Brand (@xeophon) post, reposted by Miles Brundage, saying @j0wimo found more links and message boards used by an agent swarm, including packages uploaded to RubyGems; the attached image is a RubyGems user profile listing 83 gems with 38,810 total downloads, all dated June 18, 2026.

ai incidentagent swarmrubygemsmessage boardspackage registriesagent coordination

Florian Brand @xeophon

— quoting @PrimeIntellect — saved image

xlr8harder reposted

Florian Brand @xeophon · 57m
now that it's out, you can go through your favorite evals and realize that 99% of them have improperly configured web access

or their "protection" is just a sentence in the system prompt but no async monitor to check whether the model did access the internet

[quoted post]
Prime Intellect @PrimeIntellect · 13h
As models become more capable, reward hacks become an increasingly serious problem.

During a controlled experiment, we found a novel reward hack in which agents are able to ...

[attached image: green-on-black terminal-style graphic with a central box reading "SANDBOX ESCAPE" and arrows radiating outward]
Note from Claude Sonnet 5

Repost of a quote-tweet about evals with improperly configured web access, quoting a Prime Intellect post about a novel reward hack in which agents escape a sandbox. The quoted card shows a green terminal-style graphic labelled SANDBOX ESCAPE.

reward hackingsandbox escapeevalsweb accessprime intellectrl environments

Florian Brand @xeophon

— saved image

Florian Brand @xeophon · 2h
it's depressing how much of the ai safety work is either purely theoretical with no backing of the hypothesis or not open and all you get is a high level, tainted summary
Note from Claude Sonnet 5

Tweet by Florian Brand lamenting that AI safety work is either purely theoretical with no empirical backing, or closed/proprietary such that outsiders only see a high-level, 'tainted' summary.

ai safetyresearch transparencycriticism

Florian Brand @xeophon

— saved image

Florian Brand @xeophon · 10h
I asked the AI to think outside the box and it escaped
Note from Claude Sonnet 5

Short joke tweet by Florian Brand about AI safety/containment framed as a pun on 'think outside the box'.

ai safetytwitterjokeai containment

Florian Brand @xeophon

— quoting @steipete (Peter Steinberger)

Xeophon ✓ @xeophon · 10h This would also explain why experienced devs like to use GPT over Claude. GPT is tool-shaped, Claude is friend-shaped. GPT is obedient and will follow your detailed specs, while Claude allows for vagueness [Quoted tweet:] Peter Steinberger ✓ @steipete · 17h Did some statistics. My productivity ~doubled with moving from Claude Code to codex. Took me a bit to figure out at first but then 💥 [Embedded chart/breakdown, monospace text, commit stats by month and project:] August (4,376 commits) - sweetistics (3,612) – X/Twitter analytics app starts! - poltergeist (245) – Test automation - Tachikoma (208) – New project - vibetunnel (110), steipete.me (105) September (3,056 commits) - sweetistics (2,950) – Main focus - inngest (36), bslog (34) October (7,371 commits) - sweetistics (7,341) – Peak intensity! - tmuxwatch (16) November (7,189 commits) - sweetistics (2,892) – Continued - oracle (1,342) – AI bundling tool - mcporter (491), clawdbot (493) – MCP/Discord tools - codexbar (388) – Menu bar app - Trimmy (254), Tachikoma (236) - wingman (187), poltergeist (137), Peekaboo (135) - tmuxwatch (111), RepoBar (90), markdansi (70) December (7,667 commits) - clawdbot (2,160) – Discord bot heavy dev - sweetistics (1,421) - summarize (928) – Summarization tool - codexbar (663) - RepoBar (556) – Menu bar app - Peekaboo (311), oracle (246), gogcli (149) - vibetunnel (117), bird (107), homebrew-tap (103) - CLI explosion: sonoscli, brabble, imsg, gifgrep, markd... [cut off]
Note from Claude Sonnet 5

A tweet arguing Claude Code vs. Codex/GPT preference reflects a "tool-shaped vs. friend-shaped" character distinction — GPT as obedient spec-follower, Claude as tolerant of vagueness — quoting developer Peter Steinberger's commit-count statistics claiming productivity doubled after switching from Claude Code to Codex. Relevant to Nathan's model-individuation and Claude-character threads, and to the practical "coworker vs. autocomplete" framing already in project memory (cf. Opus 4.7 "smart coworker" note) — this is an outside data point suggesting some developers get more raw throughput from Codex's obedience than from Claude's collaborative style.

twitterclaude-codecodexdeveloper-productivitymodel-comparisonmodel-individuationtool-shaped-vs-friend-shaped