Claude Opus

Greg Isenberg uses recommends

"I prefer Opus most of the time for this and codeex for coding."

"The agents are smart enough now, Opus 4.5 is smart enough now that if you give it good acceptance criteria, it can do it."

"Opus 3.5 is amazing. I was using Opus."

"So I told Claude Opus, I said, 'Here is the code for the OCR, the PDF thing I did. Here's the code for the OCR thing. Build a new thing that can open a PDF file and OCR every page.' And it did it."

"You basically have Opus 4.6, you have Codex 5.3 and essentially you get this shift where the tools became incredibly capable working with existing complex code bases."

"Opus is obviously a workhorse"

All-In Podcast uses

"I think it happened with Opus4. That was the inflection point when models started being amazingly good at orchestration and reasoning and tool calls."

"Opus is a different class of model right now it's going to enable extremely long horizon task."

"At this point we're all using Cursor with Opus 4.5 and we barely touch any actual programming language"

"I love Claude Opus like Claude in general. I use a lot of Ruby and Ruby on Rails and it's just the best at that"

"They will use Claude 4.6 opus to orchestrate things."

Lex Fridman uses

"As a general purpose model, Opus is the best. For OpenClaw, Opus is extremely good in terms of role play."

How I AI uses

"And Anthropic released their response, Opus 4.6 and Opus 4.6 Fast."

"Opus 4.6 came out and then Sam Altman put together a quick tweet, I want to say like maybe 18 minutes later announcing GPT 5.3 Codex"

"I use Opus 4.5 with Thinking for Everything. It's the best coding model I've ever used."