Investors of both should read this: https://open.substack.com/pub/sublius/p/srt-introspect-why-c...
Anthropic surpasses OpenAI to become most valuable AI startup
21–30 of 512 posts
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#22codex gtp-5.5 is far superior to opus 4.7 working on large projects
GPT-5.5 is the better programmer but Opus 4.8 remains the better system architect and product designer. Codex is very "miss the forest for the trees", but is much better at successfully making large changes in large codebases. Claude Code makes more mistakes, but has more taste and a better grasp on idiomatic and elegant software development. If you can afford to, I recommend juggling both.
Great analysis and follows my experience as well. Codex is better when you know how you want the design and the architecture and you drive the agent a lot more aggressively. Claude Code feels like more autopilot so executives and users who didn’t code before AI like it a lot more.
But I feel like an expert who can drive GPT aggressively will out perform Opus. It’s why some smart people I know are opting for GPT and have fallen off on Opus. It’s like asking an F1 driver to sit in a taxi.
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#23codex gtp-5.5 is far superior to opus 4.7 working on large projects
You're using last week's model; Opus 4.7 is old news. Opus 6.9 is the new hotness; it is a better product manager than GPT, and has more X productivity. It replaced our junior dev team, and tells me my hair looks good.
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#24I never want to hear from developers again that they are not susceptible to marketing. I see meet ups specifically about Claude often. Modern tupperware party. A colleague was convinced Claude is better so we played a game. We used the claude code and codex harness and I implemented some prs they needed with gpt5.5 and opus4.7 and asked them to identify which came from which only from the code. Couldn’t tell. Edit: i…
Been to an Anthropic event in Paris last summer.
They served caviar. It probably had good ROI.
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#25Re: Anthropic surpasses OpenAI to become most valuable AI startup
#26I never want to hear from developers again that they are not susceptible to marketing. I see meet ups specifically about Claude often. Modern tupperware party. A colleague was convinced Claude is better so we played a game. We used the claude code and codex harness and I implemented some prs they needed with gpt5.5 and opus4.7 and asked them to identify which came from which only from the code. Couldn’t tell. Edit: i…
This is like saying you gave a Taylor Swift fan sheet music from 1984 and from Michael Jackson’s thriller and they couldn’t tell the difference.
I have a strong affinity for Claude Code because of the interaction experience and overall tone / vibe / process. I am 100% willing to believe the code it produces is identical or possibly less good than Codex.
I enjoy working with Claude in a way I just don’t get from OpenAI. YMMV, you may feel just the opposite. But it’s a mistake to look at the produced code as the only dimension of these products.
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#27Earlier quoted context omitted.
GPT-5.5 is the better programmer but Opus 4.8 remains the better system architect and product designer. Codex is very "miss the forest for the trees", but is much better at successfully making large changes in large codebases. Claude Code makes more mistakes, but has more taste and a better grasp on idiomatic and elegant software development. If you can afford to, I recommend juggling both.
I find arguing that a complex weighted graph has a taste is interesting. This is not a jab, but a genuine curiosity of mine.
The taste that the complex weighted graph was trained on was better for one than the other I think is the long winded way to say it
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#28I never want to hear from developers again that they are not susceptible to marketing. I see meet ups specifically about Claude often. Modern tupperware party. A colleague was convinced Claude is better so we played a game. We used the claude code and codex harness and I implemented some prs they needed with gpt5.5 and opus4.7 and asked them to identify which came from which only from the code. Couldn’t tell. Edit: i…
Claude has an "End Conversation" tool that it can trigger on it's own, forcing your interaction to a close based on it's own feelings towards the conversation.
I have no idea how this wasn't the end of Anthropic's positive public perception.
Re: Anthropic surpasses OpenAI to become most valuable AI startup
#29I never want to hear from developers again that they are not susceptible to marketing. I see meet ups specifically about Claude often. Modern tupperware party. A colleague was convinced Claude is better so we played a game. We used the claude code and codex harness and I implemented some prs they needed with gpt5.5 and opus4.7 and asked them to identify which came from which only from the code. Couldn’t tell. Edit: i…
Everyone can be propagandised. It's a matter of pushing the right buttons.
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