Claude Haiku 5.5
Positive
Reddit reads Claude Haiku 5.5 as positive: an index of 62 from 111 opinions in 47 threads last 7 days, its whole 95% interval, 54–70, above neutral. That is 5th of the 24 models with a full read. It was released 19 days ago (7 Oct), so these are first impressions, which can still shift. 2 points colder than the previous 7 days, within noise.
The share praising is highest for cost, 90% of 48 opinions. On benchmarks: 74th of 122 on Arena text, 20th of 102 on the intelligence index.
Per day
UTC days since collection began. Each day's own index at its value, with its 95% interval.
- Tue 13 Oct27
- Wed 14 Oct25
- Thu 15 Oct37
- Fri 16 Oct20
- Sat 17 Oct23
- Sun 18 Oct13
- Mon 19 Oct99 opinions, no index below 10
- Tue 20 Oct26
- Wed 21 Oct16
- Thu 22 Oct24
- Fri 23 Oct13
- Sat 24 Oct10
- Sun 25 Oct22
- Mon 26 Oct0 so far0 opinions, no index below 10
No day this week is set against the rest of the week: both need a full read (30 opinions from 20 threads and 20 accounts).
Is Claude Haiku 5.5 getting worse?
This measures opinion, not capability: whether Reddit's view of Claude Haiku 5.5 moved, not whether the model changed. Reddit's view has not moved by more than noise: 62 in the last 7 days against 64 in the 7 before, a gap of 1.8 points inside its 95% margin of ±9.2; a smaller shift can't be ruled out.
Praised and criticised
Share of the opinions on each topic that praise it. Tagged by a language model; topics never feed the index.
- Costmostly praised48
- Follow-throughsplit24
- Codingmostly praised20
- Speedsplit20
- Intelligencemostly praised16
Reddit and the benchmarks
Its rank on each list, bottom to top. Outside numbers sit beside Reddit and never feed its index. Hover a name for the value and its source.
- #5 of 24 with a full read
- #74 of 122 on Arena
- #27 of 88 on Arena
- #20 of 102 at Artificial Analysis
- #13 of 88 at Epoch
$0.1 in / $0.5 out per million tokens · 1M context · reasoning mode · OpenRouter, 26 Oct
Per subreddit
The model's index within each subreddit, from 10 opinions; faded below 30 opinions, 20 threads or 20 accounts.
- r/ClaudeAI59
- r/ClaudeCode25
Threads behind the opinions
The 20 threads with the most opinions about this model. A thread's index reads the opinions in it, not the post, and shows from 10 opinions.
Weekly email
Every Monday: the warmest and coldest models, and who moved beyond noise. No tracking; one click unsubscribes.