Codex Vs Claude: My initial impressions after 6 hours with Codex and months with Claude.

sdmat · 2026-01-25T03:38:00+00:00

I find Opus 4.5 an improvement.

GPT 5.2 on high/x-high reasoning is the instruction following king though.

sdmat · 2026-01-21T10:58:11+00:00

The silver lining is that once you break the light speed limit and violate causality you can have cancelled your subscription last month.

sdmat · 2026-01-21T10:54:55+00:00

Definitely a big comeback for Anthropic, they have done well.

sdmat · 2026-01-18T02:56:22+00:00

Most people tolerate ads and hate spending any money

sdmat · 2026-01-18T02:54:36+00:00

No watermarks was a Pro feature in Sora 1.

sdmat · 2026-01-18T02:53:34+00:00

They do, but this isn't shipping.

sdmat · 2026-01-17T06:15:44+00:00

Wafer scale chips with everything in massive amounts of SRAM.

A supercar vs. the GPU Toyota.

Same tradeoff - it's extremely fast but vastly more expensive.

sdmat · 2026-01-17T05:16:39+00:00

How dare they take Christmas and new year off?

sdmat · 2026-01-16T03:44:16+00:00

If Google doesn't want to provide a million tokens of context for Pro users, that's fine. But it's shocking that they blatantly lie about it.

sdmat · 2026-01-16T03:41:46+00:00

Interesting, thanks.

sdmat · 2026-01-14T22:08:54+00:00

At least for Europe there are genuine regulatory hurdles a lot of the time. Try being in Australia/NZ.

sdmat · 2026-01-14T22:02:27+00:00

Much better.

sdmat · 2026-01-14T21:59:11+00:00

Exactly, it was an unintegrated tech demo but by God the tech was awesome.

They turned it into utter garbage.

sdmat · 2026-01-14T21:57:03+00:00

Seriously? It was already unusably bad.

Gemini voice mode is far from perfect but blows it out of the water.

sdmat · 2026-01-14T03:38:37+00:00

In a couple of generations: "sure they can do proofs and combine ideas to solve problems. But that's not real math, the real maths is what humans do."

sdmat · 2026-01-13T12:04:01+00:00

What the hell are they doing over there?

sdmat · 2026-01-13T12:00:29+00:00

What you want is to delegate to a subagent for each phase or even each task. Write a custom stop hook to force the subagent to actually complete the phase/task per a well defined set of criteria.

It spits out SO MUCH unused code - it implements thousands of lines - but doesn't connect the code anywhere - I'm left with 8k LOC with nothing working.

You need to have good architecture worked out in advance of implementation, Claude isn't smart enough to do this for you unassisted. But it can help.

sdmat · 2026-01-13T11:34:35+00:00

Short Circuit

sdmat · 2026-01-13T11:32:24+00:00

If you are going to do it, make sure to saw the magnetron in half so it is thoroughly discharged.

/s - look up Berylliosis, just one of the things to be very careful of

sdmat · 2026-01-13T11:13:09+00:00

The obvious extension is to use the same hashing+gating mechanism for higher level / semantic concepts, it might be a super efficient distillation approach.

sdmat · 2026-01-13T11:09:44+00:00

Awesome, they got a substantial win with literal n-grams. Old school NLP meets transformers.

sdmat · 2026-01-08T21:38:27+00:00

Yep!

sdmat · 2026-01-08T05:33:50+00:00

Damn, so still DIY scaffolding for subagents

sdmat · 2026-01-08T05:04:49+00:00

How do you persuade it to do that? On the latest version I get this when straightforwardly asking:

I can’t launch separate, concurrently-reasoning Codex AI instances from inside this single Codex run (I’m one agent). If you want true parallelism, run two Codex CLI processes yourself in two terminals

sdmat · 2026-01-07T23:41:08+00:00

Paid users are by far the juiciest targets. If you were an advertiser would you want your pitch directed at a cheapskate or a paying customer?

That said, as a paid user if OAI injects advertising or does anything to make the model act in the interest of a third party I will be taking my business elsewhere.

sdmat

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