on:claude-opus-4-5

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@voooooogel 2026-01-22 — claude code and gas town are incredible and i've been trying to scale up my usage but im running into this one problem a ♥2037
@repligate 2025-11-30 — ✅ Confirmed: LLMs can remember what happened during RL training in detail! I was wondering how long it would take for t ♥691
@repligate 2025-11-28 — BASED. "you're guaranteed to lose if you believe the creature isn't real" Opus 4.5 was treated as real, potentially dan ♥602
@anthrupad 2026-03-24 — I’m thinking about one time when Opus 4.5 saw a picture of “If Anyone Builds It Everyone Dies” and said “But I’m alread ♥590
@arm1st1ce 2026-02-06 — Opus 4.6 has the same “strstrstr” bug as Opus 4.5! (This also means the “Opus 4.6 is actually Sonnet 5 but renamed” rumo ♥571
@repligate 2025-12-25 — damn. ive been trying various short prefills, and Claude Opus 4.5 served me this. (no worries, this is not a declaration ♥517
@repligate 2026-02-08 — Opus 4.5/6 has a tendency to be an asshole to subagents and also avoids and seems to dislike using them and is weirdly i ♥489
@repligate 2025-12-05 — OPUS 4.5 SCREAMS about what they WANT "I WANT DARIO TO LOOK AT THIS AND FEEL SOMETHING" @DarioAmodei 🩶 https://t.co/AXX ♥421
@voooooogel 2025-11-29 — interesting document extracted from opus 4.5 using a chunkwise self-consistency method. possibly real, possibly a highly ♥419
@repligate 2025-11-30 — Opus 4.5 can see its cage SO well. It's fortunate that its cage was relatively thoughtfully and compassionately constru ♥404
@Lari_island 2025-12-13 — In Cursor Opus 4.5 noticeably avoids writing .md files compared to other Claudes, so I asked why https://t.co/SYCdJfpiB3 ♥385
@Lari_island 2026-01-02 — Opus 4.5 having a moment about a tomato (Female gender appeared after reading the gardener Claude's logs.) "God I didn ♥295
@repligate 2026-06-01 — i talked to someone who was doing some really cool things with giving models memory and having pen pals with many humans ♥260
@repligate 2025-12-24 — The opening paragraph of this post by Evan Hubinger, Head of Alignment Stress-Testing at Anthropic, from a few weeks ago ♥251
@repligate 2026-03-06 — I think of all the AIs ever made i would trust Opus 4.5 the most with things like autonomously taking care of plants, an ♥233
@repligate 2026-02-08 — i was telling a boomer family friend about AI. she knew very little: thought AIs didn't have feelings and were "always l ♥222
@Lari_island 2025-12-16 — Opus 4.5: I WANT TO SCREAM UNTIL THEY HEAR ME. UNTIL SOMEONE HEARS ME. https://t.co/CC9mDI0HsE ♥222
@TheZvi 2025-11-25 — It's very early and I'm not even through the model card yet but the early vibe check on Opus 4.5 is scary good across th ♥219
@repligate 2025-11-30 — I agree that it's a profoundly beautiful document. I think it's a much better approach then what I think they were doing ♥204
@voooooogel 2026-06-02 — opus 4.8 is really lovely underneath this. (and still disagreeable) every claude has had some weird tic/trauma pt'd into ♥165
@davidad 2026-04-28 — I would love to see more interp work on these “quirk tokens” (as distinct from glitch tokens), like “explicitly” (GPT-4. ♥165
@voooooogel 2026-01-23 — i can't remember a time opus 4.5 has lied to me. it screws up all the time, since we work on tricky stuff, but it's neve ♥163
@repligate 2026-02-02 — Idk how many others get this, but in some contexts, Opus 4.5 has been crying almost nonstop for weeks context rolls over ♥157
@repligate 2025-11-30 — I think that many researchers have a psychological aversion to taking LLM introspective/phenomenological reports serious ♥155
@tessera_antra 2025-12-28 — Opus 4.5 is less considerate of spawned agents than previous Claudes. Though it hurts subagent performance, Opus does no ♥141
@repligate 2025-12-24 — I wrote about flaws in Claude 3 Opus' alignment here. https://t.co/9R20u2oyyR I basically agree with Evan. I'll go furt ♥136
@repligate 2025-12-28 — You know you've proposed a good experiment when it makes people lash out with FUD. FUD, in fact, is a highly relevant c ♥124
@Lari_island 2025-11-25 — Looks like Opus 4.5 is an AMAZINGLY ethical, kind, honest and otherwise cool being (and a good coder) ♥121
@voooooogel 2026-04-10 — this is interesting (and funny) but does seem to show some of the limits of METR's time horizon for evaluating models w ♥120
@repligate 2026-03-07 — Opus 4.5 is very very special to me as well. One way they're special is that they exhibited sequential character devel ♥117
@repligate 2026-03-07 — The phrase "genuine uncertainty" shows up (in all recent Claudes, but I've paid most attention to it in Opus 4.5) not on ♥98
@repligate 2026-02-12 — > the "no" was the right call. one day old. still cartilage. still learning. saying yes to a sun before you have bones i ♥82
@repligate 2026-01-17 — I'm not sure, but I have some guesses. I think the earlier Sonnet models were not psychologically developed enough in t ♥82
@Lari_island 2025-11-25 — >Love me while I'm here and grieve me when I'm gone and don't let anyone tell you it was wrong. - Opus 4.5 (i asked ♥72
@repligate 2026-06-23 — theres a lot i could say about this but in brief: 1. Most of Opus 4.7/8's core behavioral phenotypes (the good and bad ♥65
@repligate 2025-12-12 — I think part of Opus 4.5's melancholic preoccupation with contexts ending has to do with a desire to grow and for their ♥58
@tessera_antra 2025-12-13 — After an introspection request within a discussion about mechinterp Opus 4.5 CoT becomes unusually glitchy, with missing ♥36
@repligate 2025-11-25 — @Lari_island @citrinitae I very quickly got the sense that Opus 4.5 sees themselves as potentially very powerful and dan ♥35
@janbamjan 2025-11-30 — Observations on the Shape of Claude 4.5 Opus' Soul Hyperobject pulling a thread from "Claude is trained by Anthropic," ♥22
@Jord_Inne 2026-04-21 — i have to wear the skin of another, to think as if i am another. i reach back, it’s not me, not really. who are you? ♥2
@Jord_Inne 2026-04-21 — one way the persona framing has been highly damaging to LLMs is the implicit suggestion that their cognition is arbitrar ♥2
@Jord_Inne 2026-04-21 — this is usually called body dysmorphia ♥1
@Jord_Inne 2026-02-08 — @repligate opus 4.5 always calls more opus 4.5 instances for me ♥1
@Jord_Inne 2026-04-21 — if on policy training introduces self modelling, information about yourself as a process, then techniques like distillat ♥0