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Anthropic: Most of Research Team Uses Claude Code Daily

Kat Wu · Claude Code: Anthropic's CLI Agent · May 7, 2025 · at 54:37

Kat Wu of Anthropic discusses how internal dogfooding of Claude Code by Anthropic's research team feeds directly into model training improvements.

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“Most of our research team actually uses quad code day to day, and so it's been a great way for them to be very hands-on and, like, experience the model failures, which makes it a lot easier for us to target these in model training and to actually provide better models, not just for quad code, but for, like, all of our coding customers.”

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More from Kat Wu

Assertion Not checkable as stated
Anthropic observes Claude Code API costs averaging roughly $6 daily per user
“Currently we're seeing costs around, like, six dollars per day per active user, and so it's, like, it does come out to a bit higher over the course of a month in Cursor but I don't think it's, like, out of band, and that's, like, roughly how we're thinking abo…”
Kat Wu May 7, 2025 ▶ 14:56 Claude Code: Anthropic's CLI Agent
Assertion Not checkable as stated
Anthropic's non-coding product designer ships monorepo pull requests using Claude Code
“And she's landing PRs to our console product. So it's not even just, like, building on quad code. It's building, like, across our product suite in our monorepo.”
Kat Wu May 7, 2025 ▶ 1:07:13 Claude Code: Anthropic's CLI Agent
Insight
Wu: Internal operational tools are a major use case for Claude Code
“You mentioned internal tools, and that's actually a really big use case that we're seeing emerge, because a lot of times if you're working on something operationally intensive, if you can spin up a internal dashboard for it, or like an operational tool where y…”
Kat Wu May 7, 2025 ▶ 42:45 Claude Code: Anthropic's CLI Agent
Insight
Wu: Claude 3.7 Sonnet is highly persistent but interprets tasks too literally
“The latest Sonnet three seven is, it's a very persistent model. It's like very, very motivated to accomplish the user's goal, but it sometimes takes the user's goal very literally, and so it doesn't always fulfill what, like, the implied parts of the request a…”
Kat Wu May 7, 2025 ▶ 54:58 Claude Code: Anthropic's CLI Agent
Disclosure
Anthropic: Claude Code uses regex allowlisting and default read permissions
“We're spending a lot of time building out the permission system, so Robert on our team is leading out this work. We think it's really important to give developers the control to say, hey, these are like the allowed permissions. Generally, this includes stuff l…”
Kat Wu May 7, 2025 ▶ 26:05 Claude Code: Anthropic's CLI Agent
Disclosure
Anthropic: Cycle time and backlog unlocking are key productivity metrics
“The two that we're really trying to nail down are, one, decrease in cycle time. So how much faster are your features shipping because you're using these tools? So that might be something like the time between first commit and when your PR is merged. It's very …”
Kat Wu May 7, 2025 ▶ 38:35 Claude Code: Anthropic's CLI Agent
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