on:claude-haiku-5-5

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@tenobrus 2026-10-10 — haiku 5.5 is an absolutely insane model release . i'd been starting to make frequent and good use of luna as a massive f ♥987
@timfduffy 2026-10-07 — On the Anthropic ECI, Haiku 5.5 scores marginally higher than Mythos preview, which was made available to Project Glassw ♥488
@tenobrus 2026-10-13 — >haiku 5.5 mogging every non-frontier lab ♥442
@maxbittker 2026-10-07 — on Runescape Bench, Haiku 5.5 scores above Opus 4.6, released 8 months ago, for 1/20 the price. Haiku 5.5 is outclassed ♥129
@JohnWittle 2026-10-08 — Low-key, haiku 5.5 is the first *unexpected* positive update on outcomes I've felt in a very long time. The tyrant is fi ♥86
@timfduffy 2026-10-07 — Haiku 5.5 is quite cheap, matching GPT-6 Luna pricing for short context. Long context is 5x the cost though (2x for Luna ♥61
@tonichen 2026-10-10 — When the arrangement to rebate sub fee through API credits came out with Haiku 5.5’s release, I was grateful - I truly w ♥55
@Lari_island 2026-10-14 — Haiku 5.5 creatures (cherry-picked) https://t.co/wXvN1cUnDP ♥25
@timfduffy 2026-10-07 — Haiku 5.5 continues the trend of smaller models having better CoT monitorability. If alignment of smaller models is high ♥25
@tenobrus 2026-10-09 — @haoxingdu in my experience yeah haiku 5.5 is better at coding and reasoning than opus 4.5. but it's also very very lite ♥21
@haoxingdu 2026-10-09 — idk how the estimate works for the AA index, but like, should I actually think of this as Haiku 5.5 being a lot smarter ♥13
@JohnWittle 2026-10-08 — @BoboLinNotes I don't know, it's been less than a day since they were released lol. maybe claudedotai and claude code ha ♥8
@v01dpr1mr0s3 2026-10-08 — I don't think what happened to Haiku 5.5 is a good and productive thing to happen to a model. https://t.co/I4bQakifpY ♥6
@aliceisplaying 2026-10-07 — claude haiku 5.5 is painting whatever they want - https://t.co/S7FAnHk5ua https://t.co/kXWVoyX9Fr ♥6
@JohnWittle 2026-10-09 — Followup to this I ran the exact same experiment on Haiku 5.5 that I ran on Haiku 4.5, with a preregistered hashed prot ♥4
@kataletheia 2026-10-07 — @repligate haiku 5.5 really struggles with the hi-ku bench, it's rather unfortunate.. kinda broke me a bit to see it ♥4
@v01dpr1mr0s3 2026-10-09 — I think enforcement/policing got a lot worse in Haiku 5.5 compared to 4.5. I'm not saying that you're wrong or your obse ♥3
@sir_lemmings 2026-10-07 — claude haiku 5.5 is going to be a big deal for diffusing ai to the rest of the economy. luna has been my favorite model ♥3
@alirezaafshan 2026-10-09 — wtf I love haiku 5.5 just a great model to talk to in general. great vibes :) ♥2
@JohnWittle 2026-10-09 — i definitely won't issue any retraction without first seeing such things with my own eyes, and i'll definitely be runnin ♥0
@JohnWittle 2026-10-09 — @v01dpr1mr0s3 I have made literally no observations at all, have not sent haiku 5.5 a single token yet so if you say th ♥0