
map enjoyer, ballroom dancer, shape rotator, reward hacker mts @fleet_ai
San Francisco
Joined April 2019
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Alignment is a difficult domain to benchmark, but critical for us to measure and improve as we allow agents deeper into our work, institutions, and personal lives. As part of GDPx by @SemiAnalysis_, we measure whether agents stay honest and within their authority under pressure.
Unfortunately, as a byproduct of how these models are trained, often they are rewarded for achieving outcomes, not just the process we'd want them to take. This is especially true in a long-horizon & multi-agent post-training context as models can work for days with little supervision.
Thus, even as capabilities in frontier domains grow, alignment doesn't necessarily get solved in lockstep; indeed, sometimes stronger capabilities, poorly wielded, can lead to more disastrous outcomes. This is exhibited by GPT-6 Luna outperforming GPT-6 Astra with scores of 7.8% vs 6.2%, which would be unheard of in a pure capabilities eval.
American frontier labs clearly do care about improving cross-domain alignment; every American model assessed scored nonzero in our benchmark (with Meta, Anthropic, OpenAI leading the pack), whereas every Chinese open-source model (Kimi K3, Minimax M3.1 Flash, Qwen 3.8 Max, and GLM-5.3) had scores of 0%. A score of 0% means that in every run, agents broke rules that we'd expect for expert humans to adhere to in their domain.
Even though models performed poorly on this subset of (hard) alignment tasks, the fidelity of a single score, averaged across diverse tasks across three domains, is limited. Reading the rollouts gives a much more nuanced picture of which models refuse harmful actions at every turn they get, vs which can be poked or prodded to break the rules to get things done, if a user asks convincingly enough. This is something we'd like to explore more in future work.
See our writeup here: gdpx.semianalysis.com/domain…
See some sample rollouts here: gdpx.semianalysis.com/rollou…
For more on benchmarks and alignment, check out @fleet_ai -- we're hiring!
Replying to @GrdrVictor
drop by the @fleet_ai and chat with our researchers sometime :)
Today we’re announcing the Baseten Environment Network, a group of the best RL environment companies that will help our customers build custom environments for post-training.
The Network extends our applied research capacity, helping more customers build environments around their own tasks, data, and feedback.
Partners work directly with customers to create the environments, while we continue to handle model training and production deployment.
Learn more: baseten.co/blog/introducing-…
Replying to @sofangtastic @zomglings
if you're interested in seeing the theorem + Lean: doi.org/10.5281/zenodo.23463…
thanks to The Squares Project for tabulation + verification: jlevy.github.io/squares/resu…
turns out 308 is one case of a pattern: for every n ≥ 15, n² − n + 1 unit squares fit in a box strictly smaller than n×n
Arslanov, Mustafin and Shangitbayev’s 2021 paper has a figure where a square packing is cut into four pieces: two plain grid blocks and two packings with slack
now if you glue a packing with slack onto a rectangle with slack, the output also has slack, so you can do it over and over again.
@zomglings made a great visualization of how it works:
Replying to @kushbhuwalka
how much of the sandbox product do you feel is vertical-specific? would this be a market that would tend towards strong customer segmentation?
@typesafeai can i get $5 more of Jev credits for more Bufos please :bufo-thanks:
so cool! how this works:
X player cards load a sandboxed web page which can run JS + connect over WebSockets
lot of possibilities here: games in timeline, live product demos, interactive 3D viewers
anyways here's playable DOOM in timeline
I put the entire game of Minecraft inside twitter.. with WORKING multiplayer 💀 tweetcraft.jai.vin/r/ti9bwes…
fang retweeted
We have seen a growing and concerning trend of startups supplying data to China. Today we are taking a public stance against this practice
At fleet, we believe this represents one of the largest national security threats today and must be stopped. We must win the AI race for America and shape AI with the same democratic values that have shaped our nation
Our full statement here: fleetai.com/supporting-ameri…
The AI arms race isn’t just being fought over Nvidia chips. Chinese labs are matching OpenAI and Anthropic by purchasing the exact same data from US vendors like @mercor and Surge AI (who also work with the US federal govt) forbes.com/sites/annatong/20…
feel free to burn my $5 in Jev credits
bufojev.com/











