# Claude 4.5 (Anthropic)

32 Hacker News commenters recommended Claude 4.5 (Anthropic) and 11 criticized it, November 2025 to November 2026. It was recommended in 11 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** People recommend it for strong coding and chat output, with fast, clean results and a good feel to use. The most common caveat is that it still makes mistakes and needs close supervision on complex codebases.

## Why people recommend it

- Strong coding and task performance (4 comments): "There are tasks that you'd have to reroll 3.5 til the end of the universe that 4.5 would one shot." ([source](https://news.ycombinator.com/item?id=46663361)) "For the work I am doing, I found Claude 4.5 (both models) to be absolutely unchallenged." ([source](https://news.ycombinator.com/item?id=46086049)) "It tends to produce very good, clean, well-documented code and tests." ([source](https://news.ycombinator.com/item?id=46340006))
- Fast and efficient to use (2 comments): "I also feel like 4.5 was just way more efficient too" ([source](https://news.ycombinator.com/item?id=47057620)) "Claude 4.5 is by far the best/fastest coding model" ([source](https://news.ycombinator.com/item?id=46627172))
- Good feel and tooling (3 comments): "Much better feel with the Claude 4.5 series, for both chat and coding." ([source](https://news.ycombinator.com/item?id=46821515)) "Claude 4.5 just works and it's crazy good." ([source](https://news.ycombinator.com/item?id=46011302)) "Claude has better tooling and UX." ([source](https://news.ycombinator.com/item?id=46359591))
- Understands what users want (2 comments): "they do exactly what I tell them to most of the time" ([source](https://news.ycombinator.com/item?id=46439196)) "4.5 would make sure it understands what I want" ([source](https://news.ycombinator.com/item?id=47672918))

## What people warn about

- Makes frequent mistakes and hallucinations (2 comments): "The context grows very quickly and the LLM gets lost and starts hallucinating." ([source](https://news.ycombinator.com/item?id=46922443)) "It makes mistakes every day." ([source](https://news.ycombinator.com/item?id=46339809))
- Reverts fixes and rewrites model calls (2 comments): "will often just randomly rewrite calls to GPT5 to GPT4o, or Claude 4.5 to Claude 3.5" ([source](https://news.ycombinator.com/item?id=45989468)) "Claude 4.5 often starts reverting bug fixes ~50k tokens back" ([source](https://news.ycombinator.com/item?id=46906745))
- Overly agreeable, sycophantic replies (2 comments): "Even Claude 4.5 models are still somewhat prone to "You're absolutely right!"" ([source](https://news.ycombinator.com/item?id=46239941)) "Of course they did, they are sycophants" ([source](https://news.ycombinator.com/item?id=46114791))

## Alternatives hackers recommend

- [Claude Opus](https://hackerapproved.com/p/claude-opus.md): 3331 recommend
- [OpenAI GPT](https://hackerapproved.com/p/gpt-5-5.md): 1205 recommend
- [Claude Sonnet](https://hackerapproved.com/p/claude-sonnet.md): 854 recommend
- [DeepSeek V4 Flash](https://hackerapproved.com/p/deepseek-v4-flash.md): 828 recommend
- [Fable](https://hackerapproved.com/p/fable.md): 823 recommend

## Where to get it

- [Visit the official site](https://www.anthropic.com/)

## Cite as

Hacker Approved, "Claude 4.5 (Anthropic)", https://hackerapproved.com/p/claude-4-5/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).