undefined | Better HN

0 pointsthehamkercat4mo ago0 comments

Same with opencode and gemini, it's disgusting

Codex (by openai ironically) seems to be the fastest/most-responsive, opens instantly and is written in rust but doesn't contain that many features

Claude opens in around 3-4 seconds

Opencode opens in 2 seconds

Gemini-cli is an abomination which opens in around 16 second for me right now, and in 8 seconds on a fresh install

Codex takes 50ms for reference...

If their models are so good, why are they not rewriting their own react in cli bs to c++ or rust for 100x performance improvement (not kidding, it really is that much)

0 comments

22 comments · 5 top-level

azinman24mo ago· 9 in thread

Why does it matter if Claude Code opens in 3-4 seconds if everything you do with it can take many seconds to minutes? Seems irrelevant to me.

RohMin4mo ago

I guess with ~50 years of CPU advancements, 3-4 seconds for a TUI to open makes it seem like we lost the plot somewhere along the way.

strange_quark4mo ago

Don’t forget they’ve also publicly stated (bragged?) about the monumental accomplishment of getting some text in a terminal to render at 60fps.

jama2114mo ago

So it doesn’t matter at all except to your sensibilities. Sounds to me that they simply are much better at prioritisation than your average HN user, who’d have taken forever to release it but at least the terminal interface would be snappy…

barnabee4mo ago

Some people[0] like their tools to be well engineered. This is not unique to software.

[0] Perhaps everyone who actually takes pride in their craft and doesn’t prioritise shitty hustle culture and making money over everything else.

azinman24mo ago

Aside from startup time, as a tool Claude Code is tremendous. By far the most useful tool I’ve encountered yet. This seems to be very nit picky compared to the total value provided. I think y'all are missing the forrest for the trees.

2 more replies

wahnfrieden4mo ago

Because when the agent is taking many seconds to minutes, I am starting new agents instead of waiting or switching to non-agent tasks

mbesto4mo ago

This is exactly the type of thing that AI code writers don't do well - understand the prioritization of feature development.

Some developers say 3-4 seconds are important to them, others don't. Who decides what the truth is? A human? ClawdBot?

jama2114mo ago

The humans in the company (correctly) realised that a few seconds to open basically the most powerful productivity agent ever made so they can focus on fast iteration of features is a totally acceptable trade off priority wise. Who would think differently???

1 more reply

sumedh4mo ago

> Some developers say 3-4 seconds are important to them, others don't.

Wasnt GTA 5 famous for very long start up time and turns out there some bug which some random developer/gamer found out and gave them a fix?

Most Gamers didnt care, they still played it.

g947o4mo ago· 6 in thread

Great question, and my guess:

If you build React in C++ and Rust, even if the framework is there, you'll likely need to write your components in C++/Rust. That is a difficult problem. There are actually libraries out there that allow you to build web UI with Rust, although they are for web (+ HTML/CSS) and not specifically CLI stuff.

So someone needs to create such a library that is properly maintained and such. And you'll likely develop slower in Rust compared to JS.

These companies don't see a point in doing that. So they just use whatever already exists.

shoeb00m4mo ago

Opencode wrote their own tui library in zig, and then build a solidjs library on top of that.

https://github.com/anomalyco/opentui

g947o4mo ago

This has nothing to do with React style UI building.

1 more reply

Philpax4mo ago

Those Rust libraries have existed for some time:

- https://github.com/ratatui/ratatui

- https://github.com/ccbrown/iocraft

- https://crates.io/crates/dioxus-tui

g947o4mo ago

Where is React? These are TUI libraries, which are not the same thing

1 more reply

pdntspa4mo ago

and why do they need react...

Philpax4mo ago

That's actually relatively understandable. The React model (not necessarily React itself) of compositional reactive one-way data binding has become dominant in UI development over the last decade because it's easy to work with and does not require you to keep track of the state of a retained UI.

Most modern UI systems are inspired by React or a variant of its model.

2 more replies

bdangubic4mo ago· 2 in thread

50ms to open and then 2hrs to solve a simple problem vs 4s to open and then 5m to solve a problem, eh?

jama2114mo ago

lol right? I feel like I’m taking crazy pills here. Why do people here want to prioritise the most pointless things? Oh right it’s because they’re bitter and their reaction is mostly emotional…

thehamkercatOP4mo ago

The "50ms" number was measured by me and you can literally try it on your system as well. it will likely be faster than 50ms

Do you have a proof that gpt-5.2 or 5.3 codex takes 2 hours for the same problem that sonnet/opus4.5/4.6 take 5 minutes to solve? (I use both anthropic and openai models daily almost equally, and i'm not relating to what you said)

Sure codex-cli lacks way-too many features compared to claude-code (I use opencode), but your statement implies that openai models are absolute garbage (2h vs 5m to solve a problem)

wahnfrieden4mo ago

Codex team made the right call to rewrite its TypeScript to Rust early on

shoeb00m4mo ago

codex cli is missing a bunch of ux features like resizing on terminal size change.

Opencode's core is actually written in zig, only ui orchestration is in solidjs. It's only slightly slower to load than neo-vim on my system.

https://github.com/anomalyco/opentui

j / k navigate · click thread line to collapse

0 comments

22 comments · 5 top-level

azinman24mo ago· 9 in thread

Why does it matter if Claude Code opens in 3-4 seconds if everything you do with it can take many seconds to minutes? Seems irrelevant to me.

RohMin4mo ago

I guess with ~50 years of CPU advancements, 3-4 seconds for a TUI to open makes it seem like we lost the plot somewhere along the way.

strange_quark4mo ago

Don’t forget they’ve also publicly stated (bragged?) about the monumental accomplishment of getting some text in a terminal to render at 60fps.

jama2114mo ago

barnabee4mo ago

Some people[0] like their tools to be well engineered. This is not unique to software.

[0] Perhaps everyone who actually takes pride in their craft and doesn’t prioritise shitty hustle culture and making money over everything else.

azinman24mo ago

2 more replies

wahnfrieden4mo ago

Because when the agent is taking many seconds to minutes, I am starting new agents instead of waiting or switching to non-agent tasks

mbesto4mo ago

This is exactly the type of thing that AI code writers don't do well - understand the prioritization of feature development.

Some developers say 3-4 seconds are important to them, others don't. Who decides what the truth is? A human? ClawdBot?

jama2114mo ago

1 more reply

sumedh4mo ago

> Some developers say 3-4 seconds are important to them, others don't.

Wasnt GTA 5 famous for very long start up time and turns out there some bug which some random developer/gamer found out and gave them a fix?

Most Gamers didnt care, they still played it.

g947o4mo ago· 6 in thread

Great question, and my guess:

So someone needs to create such a library that is properly maintained and such. And you'll likely develop slower in Rust compared to JS.

These companies don't see a point in doing that. So they just use whatever already exists.

shoeb00m4mo ago

Opencode wrote their own tui library in zig, and then build a solidjs library on top of that.

https://github.com/anomalyco/opentui

g947o4mo ago

This has nothing to do with React style UI building.

1 more reply

Philpax4mo ago

Those Rust libraries have existed for some time:

- https://github.com/ratatui/ratatui

- https://github.com/ccbrown/iocraft

- https://crates.io/crates/dioxus-tui

g947o4mo ago

Where is React? These are TUI libraries, which are not the same thing

1 more reply

pdntspa4mo ago

and why do they need react...

Philpax4mo ago

Most modern UI systems are inspired by React or a variant of its model.

2 more replies

bdangubic4mo ago· 2 in thread

50ms to open and then 2hrs to solve a simple problem vs 4s to open and then 5m to solve a problem, eh?

jama2114mo ago

thehamkercatOP4mo ago

The "50ms" number was measured by me and you can literally try it on your system as well. it will likely be faster than 50ms

Sure codex-cli lacks way-too many features compared to claude-code (I use opencode), but your statement implies that openai models are absolute garbage (2h vs 5m to solve a problem)

wahnfrieden4mo ago

Codex team made the right call to rewrite its TypeScript to Rust early on

shoeb00m4mo ago

codex cli is missing a bunch of ux features like resizing on terminal size change.

Opencode's core is actually written in zig, only ui orchestration is in solidjs. It's only slightly slower to load than neo-vim on my system.

https://github.com/anomalyco/opentui

j / k navigate · click thread line to collapse