alt.hn

7/29/2026 at 10:58:23 PM

Enabling two settings tripled our scores on the ARC-AGI-3 benchmark

 https://openai.com/index/how-two-settings-tripled-our-arc-agi-3-scores/

by tedsanders

7/30/2026 at 7:53:22 AM

I think this blog post might be a "reply" of sorts to Anthropic's tweet from some days earlier?

> On ARC-AGI-3, an evaluation where AI models must solve novel problems, Opus 5’s score is three times as high as the next best model.

https://x.com/claudeai/status/2080699504576045299

by embedding-shape

7/30/2026 at 7:28:06 AM

> Agents do best when they remember what they’ve done

Sometimes I am baffled that sentences like this are used as headlines. I know I’ll sound dismissive… but: duh?!

by FacelessJim

7/30/2026 at 10:57:18 AM

They had to point out the obvious because ARC-AGI-3 wasn't designed with that in mind for some reason.

by EliasWatson

7/30/2026 at 7:03:08 AM

On one hand I agree with ARC team that harnesses can incorporate some logic and overfit to win the tests. But also, the specific harness that OpenAI wants to use is not cherry picked. What then should be the rules? Same harness for all or company’s standard commercial harness? Technically even that could incorporate some hacks.

by simianwords