6 ms·

A few of us from the Claude Code team will be hanging around if anyone has questions! Very excited for this launch -- dynamic workflows have been a game changer

by bcherny 4mo ago

A few of us from the Claude Code team will be hanging around if anyone has questions! Very excited for this launch -- dynamic workflows have been a game changer for engineering here at Anthropic. Can't wait to hear what you think.

thallavajhula 4mo ago
Hi Boris! Thanks for Claude Code. Is there an example of how y'all use Dynamic Workflows internally that you could share with the rest of us here so that we can mimic something similar?
- bcherny 4mo ago
  Hey, yep. A few things I personally used dynamic workflows for over the last few weeks: 1. Autonomously landed 20+ optimizations to reduce Claude Code's token usage by ~15% 2. Ported tree-sitter, color-diff, yoga-layout, and a number of other WASM and Rust native modules to TypeScript, improving CPU and memory use by 2-10x in the process 3. Made our CI faster, and repeatedly found and fixed flaky tests (with /loop) 4. Migrated from regex-based bash static analysis to tree-sitter, reducing false positive permission prompts by 45% 5. Reduced Claude Agent SDK startup time by 61%, by repeatedly profiling and optimizing the startup path, putting up a number of PRs in the process 6. Shipped 69 code simplification PRs, deleting >10k lines of code
  - rahkiin 4mo ago
    You _reduced_ its _efficiency_? Why do you make CC more inefficient?
    - bcherny 4mo ago
      Typo! Edited
    - isoprophlex 4mo ago
      Maxxing everything is all the rage. Gotta cpumaxx or bossman isnt getting his money's worth
  - mkw5053 4mo ago
    Very cool. What % of the CC team's engineering would you say goes into QoL (as opposed to new feature development)? Obviously some live in a grey area, while others are more clear like making CI faster.
  - JimJohn4292 4mo ago
    Boris, what are your thoughts on WASM as a technology and it's practical implications for AI in the future?
  - sangeeth96 4mo ago
    > Ported tree-sitter, color-diff, yoga-layout, and a number of other WASM and Rust native modules to TypeScript, improving CPU and memory use by 2-10x in the process Curious to learn more on this (unless there’s a write-up in the works). I’m naive on this matter but: 1. is this because it’s higher cost when passing objects back and forth across the JS/native boundary? 2. Does this have anything more specific to do with use of Bun? 3. is the stance for claude code then to keep all the deps in raw TypeScript? 4. How do you folks keep these ported deps up-to-date?
  - theLiminator 4mo ago
    Is there not a reason to instead port claude code to rust? Do you have internal benchmarks that show that claude code is better at typescript than rust?
  - guybedo 4mo ago
    this feels more like a PR statement than a description of how you used the tool though
  - verve_rat 4mo ago
    None of those are helpful examples we could mimic to figure out how to use the tools. This reads like a CV, not trying to help or educate.
k2xl 4mo ago
How do you guys plan feature support between the CLI and Claude Desktop?
- bcherny 4mo ago
  We generally build features into the Claude Agent SDK, which is shared by CLI, Desktop, VSCode, and cloud.
  - unshavedyak 4mo ago
    VSCode has an official client? Given IDE usage is being restricted from Claude Code via the CC SDK tokens going to the Claude API rather than your CC Subscription, i'm unclear which IDEs can actually use claude code now. Eg is Zed capable of using a Claude Code Subscription?
    - fredoliveira 4mo ago
      > is Zed capable of using a Claude Code Subscription? Yes. Zed connects to Claude Code via ACP.
      - unshavedyak 4mo ago
        to be clear, i'm referring to the recent fact where it appears that they're disabling all Claude Code (Subscription) usage from the SDK. Which ACP would be included on. As usual though it's not super clear exactly what is allowed or not.
      - unshavedyak 4mo ago
        Oh, yea here's all the proof you need. Even Zed themselves admit you won't be able to use Claude Code via ACP via Subscription: https://zed.dev/blog/terminal-threads https://zed.dev/blog/terminal-threads So yea, bcherny didn't reply to me but as far as i can tell - No, Zed nor VSCode will have Claude Code natively in it. The best we can do is embed a Terminal into the editor and run CC in that. With that said, because bcherny advertised VSCode, i'm going to guess VSCode is going to get special treatment. Really annoying.
tsunamifury 4mo ago
This is really dissapointing release for such a promising technique. Long walks with fanned vectors can actually be token optimizing vs token burning when combined with self grading each agent along the walk and compared to manual long coding walks to solve first pass problems. But instead this frames it (assumptively) as a tokenmaxxing strategy. There are also many other strartegies that can prove effeciency and wider solution consideration with consensus, but none of this is explained why its an improvement or better than other technqiues. Its like you guys aren't even aware of the primary problem you are all facing: your token burns aren't paying off anyore against standard coding -- and looking net negative. I have to ask, are you this unaware of your core problem set here? There are no any examples, proofs, or scenarios that show why there is improvement either in complexity or reliability of the solution or effeciency to the path of the solution. I'm baffled.
rsstack 4mo ago
Will you document how to (AI-)author and share reusable workflows between team members, to ensure some consistency of quality? Maybe blasphemy, but will workflows be able to use non-Anthropic LLMs (e.g., delegating some steps to local models, but design and review by Claude)?
- bcherny 4mo ago
  Yes, more docs + technical details coming soon.
m0meni 4mo ago
What language are the workflows in? Curious what you settled on. And are they running in the cloud or locally?
- bcherny 4mo ago
  JavaScript, running locally or in the cloud.
deleted 4mo ago
[deleted]
wilg 4mo ago
I tried creating a workflow in Claude 1.9255.2 (1dc8f7) 2026-05-27T01:57:20.000Z and got API Error: 400 messages.3.content.11: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response. Tried again in Claude 1.9659.1 (193bcb) 2026-05-28T16:22:15.000Z also but may need a new chat
- bcherny 4mo ago
  Looking
  - wilg 4mo ago
    Still seeing it in new threads with Claude 1.9659.1 (193bcb) 2026-05-28T16:22:15.000Z
stvpwrs 4mo ago
Will workflows be reusable? I have a big use case of sharable and repeatable workflows for projects. Especially if this comes to Cowork.
- bcherny 4mo ago
  Yes!
  - andrewmutz 4mo ago
    Any idea how soon dynamic workflows might be available in Cowork?
bryan0 4mo ago
Thanks to you and the anthropic team for developing such exciting tools! The blog post seems to position workflows for “breadth”: generating fixes / refactors against large code bases. What about for “depth”: developing specific new features and functionality end-to-end? I’ve struggled to make this work reliably using the current experimental agent teams. Does this replace or augment that functionality?
- bcherny 4mo ago
  Yes, it also helps! That's a place where raw model capability is the most helpful, but we do find that some dynamic workflow configurations can be helpful too.
  - bryan0 4mo ago
    Cool! If you can point to any examples of those types of workflow configurations I’d be super interested. For example, to have a team of agents review a PR and iterate on it until all requirements are met including UX, security and product functionality goals. If they could “converge” to a solution like workflows seems to be designed for that would be amazing.
hbarka 4mo ago
Hi Boris. Love the velocity of features. Are you planning on adding a secrets manager? Enterprise workflows almost always require an encrypted parameter or calling a secret.
- tomjakubowski 4mo ago
  Why should secrets be built in? What's the issue with tool use and something like 1password's or Vault's CLI?
  - hbarka 4mo ago
    Another piece to pay for.
    - tomjakubowski 4mo ago
      There are free alternatives: https://openbao.org/ https://openbao.org/ Personally, I am happy paying 1password for my personal secret management. Their security credibility and bona fides are well-established. I'd strongly consider them for a business contract too.
- mrud 4mo ago
  I think they have vaults[0] which provide it. I don't think this is available on the non platform side. [0] https://platform.claude.com/docs/en/managed-agents/vaults https://platform.claude.com/docs/en/managed-agents/vaults
  - hbarka 4mo ago
    This is it, thank you. I’m surprised I couldn’t get Claude to surface this capability.
wilg 4mo ago
Can you please fix the issue where like 99.99999% of the time Claude tries to launch a subagent on its own accord it gets "Prompt is too long" and tries several more times, then gives up and does it without the subagent. Big waste of time and tokens and not getting almost any subagent advantages. Not kidding that this happens about 100 times a day.
franze 4mo ago
just wanted to say thank you, just did a 2 days "ai computer use" workshop - think a virtual desktop on hetzner with claude code in yolo mode, a github account, vercel and logged in into a google account and claude had all the credentials and then let a mix of marketing / product manager / sales / customer support let loose. 2k token budget ... and just let them see do magic again and again. thx for all that amazing tec and save ai
vblanco 4mo ago
I have my own version and the workflow keyword conflicts with it rather heavily. Will there be a way to disable that prompt section/keyword?
- bcherny 4mo ago
  Yep! Set disableWorkflows:true in your settings.json
  - vblanco 4mo ago
    thank you
Depurator 4mo ago
[dead]
_boffin_ 4mo ago
This isn't related to Dynamic Workflows, but more on the telemetry / observability side of things. Why'd you guys not want to allow the traceparent in hooks, but allowed the session.id? Any plans on changing that?
hedgehog 4mo ago
How granular is the control over the internal process? In my experiments I've had some success modeling the work to be done as a DAG of typed artifacts with a combination of code + LLM doing decomposition, transforms, synthesis, and fitness checking to generate the output. It took me a lot of tries to arrive at that formula and it would be cool to have something more general. I also run part of it against local compute because it would be far beyond my budget to do it all on Opus, so something for that would be nice too.
gfunk911 4mo ago
How much overlap do you feel like dynamic workflows have with RLMs?
nebben64 4mo ago
hey Boris, with multi-agent work, e.g. Agent Teams, following other agents is not possible because they work so fast. (my tmux panes are just matrix) do you think something like a /speed config can be introduced to adjust agent working speed and let people adjust?
manquer 4mo ago
Great feature and wonderful launch! Using the keyword “Workflow”like “Ultrathink” is problematic? Ultrathink is uncommon enough that it is unlikely to be used in code or prompt outside its intended purpose. Workflow is generic keyword and used in so many contexts both inside the codebase and orchestration tooling like say temporal.io or others that name their constructs “workflows”.
firemelt 4mo ago
hi boris I get confused shpuld I kep using /feature-dev of worfklows if I want to addinga feature to my app?
dbbk 4mo ago
Personally I would just like to be able to read more than 2 lines of an AskUserQuestion on the iOS app. Ever since the feature launched it's truncated the question, so you cannot actually read it. Does anyone at Anthropic use the iOS app? Ever?

by bcherny 4mo ago

thallavajhula 4mo ago

Hi Boris! Thanks for Claude Code. Is there an example of how y'all use Dynamic Workflows internally that you could share with the rest of us here so that we can mimic something similar?

bcherny 4mo ago
Hey, yep. A few things I personally used dynamic workflows for over the last few weeks: 1. Autonomously landed 20+ optimizations to reduce Claude Code's token usage by ~15% 2. Ported tree-sitter, color-diff, yoga-layout, and a number of other WASM and Rust native modules to TypeScript, improving CPU and memory use by 2-10x in the process 3. Made our CI faster, and repeatedly found and fixed flaky tests (with /loop) 4. Migrated from regex-based bash static analysis to tree-sitter, reducing false positive permission prompts by 45% 5. Reduced Claude Agent SDK startup time by 61%, by repeatedly profiling and optimizing the startup path, putting up a number of PRs in the process 6. Shipped 69 code simplification PRs, deleting >10k lines of code
- rahkiin 4mo ago
  You _reduced_ its _efficiency_? Why do you make CC more inefficient?
  - bcherny 4mo ago
    Typo! Edited
  - isoprophlex 4mo ago
    Maxxing everything is all the rage. Gotta cpumaxx or bossman isnt getting his money's worth
- mkw5053 4mo ago
  Very cool. What % of the CC team's engineering would you say goes into QoL (as opposed to new feature development)? Obviously some live in a grey area, while others are more clear like making CI faster.
- JimJohn4292 4mo ago
  Boris, what are your thoughts on WASM as a technology and it's practical implications for AI in the future?
- sangeeth96 4mo ago
  > Ported tree-sitter, color-diff, yoga-layout, and a number of other WASM and Rust native modules to TypeScript, improving CPU and memory use by 2-10x in the process Curious to learn more on this (unless there’s a write-up in the works). I’m naive on this matter but: 1. is this because it’s higher cost when passing objects back and forth across the JS/native boundary? 2. Does this have anything more specific to do with use of Bun? 3. is the stance for claude code then to keep all the deps in raw TypeScript? 4. How do you folks keep these ported deps up-to-date?
- theLiminator 4mo ago
  Is there not a reason to instead port claude code to rust? Do you have internal benchmarks that show that claude code is better at typescript than rust?
- guybedo 4mo ago
  this feels more like a PR statement than a description of how you used the tool though
- verve_rat 4mo ago
  None of those are helpful examples we could mimic to figure out how to use the tools. This reads like a CV, not trying to help or educate.

k2xl 4mo ago

How do you guys plan feature support between the CLI and Claude Desktop?

bcherny 4mo ago
We generally build features into the Claude Agent SDK, which is shared by CLI, Desktop, VSCode, and cloud.
- unshavedyak 4mo ago
  VSCode has an official client? Given IDE usage is being restricted from Claude Code via the CC SDK tokens going to the Claude API rather than your CC Subscription, i'm unclear which IDEs can actually use claude code now. Eg is Zed capable of using a Claude Code Subscription?
  - fredoliveira 4mo ago
    > is Zed capable of using a Claude Code Subscription? Yes. Zed connects to Claude Code via ACP.
    - unshavedyak 4mo ago
      to be clear, i'm referring to the recent fact where it appears that they're disabling all Claude Code (Subscription) usage from the SDK. Which ACP would be included on. As usual though it's not super clear exactly what is allowed or not.
    - unshavedyak 4mo ago
      Oh, yea here's all the proof you need. Even Zed themselves admit you won't be able to use Claude Code via ACP via Subscription: https://zed.dev/blog/terminal-threads https://zed.dev/blog/terminal-threads So yea, bcherny didn't reply to me but as far as i can tell - No, Zed nor VSCode will have Claude Code natively in it. The best we can do is embed a Terminal into the editor and run CC in that. With that said, because bcherny advertised VSCode, i'm going to guess VSCode is going to get special treatment. Really annoying.

tsunamifury 4mo ago

This is really dissapointing release for such a promising technique. Long walks with fanned vectors can actually be token optimizing vs token burning when combined with self grading each agent along the walk and compared to manual long coding walks to solve first pass problems. But instead this frames it (assumptively) as a tokenmaxxing strategy. There are also many other strartegies that can prove effeciency and wider solution consideration with consensus, but none of this is explained why its an improvement or better than other technqiues. Its like you guys aren't even aware of the primary problem you are all facing: your token burns aren't paying off anyore against standard coding -- and looking net negative. I have to ask, are you this unaware of your core problem set here? There are no any examples, proofs, or scenarios that show why there is improvement either in complexity or reliability of the solution or effeciency to the path of the solution. I'm baffled.

rsstack 4mo ago

Will you document how to (AI-)author and share reusable workflows between team members, to ensure some consistency of quality? Maybe blasphemy, but will workflows be able to use non-Anthropic LLMs (e.g., delegating some steps to local models, but design and review by Claude)?

bcherny 4mo ago
Yes, more docs + technical details coming soon.

m0meni 4mo ago

What language are the workflows in? Curious what you settled on. And are they running in the cloud or locally?

bcherny 4mo ago
JavaScript, running locally or in the cloud.

deleted 4mo ago

[deleted]

wilg 4mo ago

I tried creating a workflow in Claude 1.9255.2 (1dc8f7) 2026-05-27T01:57:20.000Z and got API Error: 400 messages.3.content.11: `thinking` or `redacted_thinking` blocks in the latest assistant message cannot be modified. These blocks must remain as they were in the original response. Tried again in Claude 1.9659.1 (193bcb) 2026-05-28T16:22:15.000Z also but may need a new chat

bcherny 4mo ago
Looking
- wilg 4mo ago
  Still seeing it in new threads with Claude 1.9659.1 (193bcb) 2026-05-28T16:22:15.000Z

stvpwrs 4mo ago

Will workflows be reusable? I have a big use case of sharable and repeatable workflows for projects. Especially if this comes to Cowork.

bcherny 4mo ago
Yes!
- andrewmutz 4mo ago
  Any idea how soon dynamic workflows might be available in Cowork?

bryan0 4mo ago

Thanks to you and the anthropic team for developing such exciting tools! The blog post seems to position workflows for “breadth”: generating fixes / refactors against large code bases. What about for “depth”: developing specific new features and functionality end-to-end? I’ve struggled to make this work reliably using the current experimental agent teams. Does this replace or augment that functionality?

bcherny 4mo ago
Yes, it also helps! That's a place where raw model capability is the most helpful, but we do find that some dynamic workflow configurations can be helpful too.
- bryan0 4mo ago
  Cool! If you can point to any examples of those types of workflow configurations I’d be super interested. For example, to have a team of agents review a PR and iterate on it until all requirements are met including UX, security and product functionality goals. If they could “converge” to a solution like workflows seems to be designed for that would be amazing.

hbarka 4mo ago

Hi Boris. Love the velocity of features. Are you planning on adding a secrets manager? Enterprise workflows almost always require an encrypted parameter or calling a secret.

tomjakubowski 4mo ago
Why should secrets be built in? What's the issue with tool use and something like 1password's or Vault's CLI?
- hbarka 4mo ago
  Another piece to pay for.
  - tomjakubowski 4mo ago
    There are free alternatives: https://openbao.org/ https://openbao.org/ Personally, I am happy paying 1password for my personal secret management. Their security credibility and bona fides are well-established. I'd strongly consider them for a business contract too.
mrud 4mo ago
I think they have vaults[0] which provide it. I don't think this is available on the non platform side. [0] https://platform.claude.com/docs/en/managed-agents/vaults https://platform.claude.com/docs/en/managed-agents/vaults
- hbarka 4mo ago
  This is it, thank you. I’m surprised I couldn’t get Claude to surface this capability.

wilg 4mo ago

Can you please fix the issue where like 99.99999% of the time Claude tries to launch a subagent on its own accord it gets "Prompt is too long" and tries several more times, then gives up and does it without the subagent. Big waste of time and tokens and not getting almost any subagent advantages. Not kidding that this happens about 100 times a day.

franze 4mo ago

just wanted to say thank you, just did a 2 days "ai computer use" workshop - think a virtual desktop on hetzner with claude code in yolo mode, a github account, vercel and logged in into a google account and claude had all the credentials and then let a mix of marketing / product manager / sales / customer support let loose. 2k token budget ... and just let them see do magic again and again. thx for all that amazing tec and save ai

vblanco 4mo ago

I have my own version and the workflow keyword conflicts with it rather heavily. Will there be a way to disable that prompt section/keyword?

bcherny 4mo ago
Yep! Set disableWorkflows:true in your settings.json
- vblanco 4mo ago
  thank you

Depurator 4mo ago

[dead]

_boffin_ 4mo ago

This isn't related to Dynamic Workflows, but more on the telemetry / observability side of things. Why'd you guys not want to allow the traceparent in hooks, but allowed the session.id? Any plans on changing that?

hedgehog 4mo ago

How granular is the control over the internal process? In my experiments I've had some success modeling the work to be done as a DAG of typed artifacts with a combination of code + LLM doing decomposition, transforms, synthesis, and fitness checking to generate the output. It took me a lot of tries to arrive at that formula and it would be cool to have something more general. I also run part of it against local compute because it would be far beyond my budget to do it all on Opus, so something for that would be nice too.

gfunk911 4mo ago

How much overlap do you feel like dynamic workflows have with RLMs?

nebben64 4mo ago

hey Boris, with multi-agent work, e.g. Agent Teams, following other agents is not possible because they work so fast. (my tmux panes are just matrix) do you think something like a /speed config can be introduced to adjust agent working speed and let people adjust?

manquer 4mo ago

Great feature and wonderful launch! Using the keyword “Workflow”like “Ultrathink” is problematic? Ultrathink is uncommon enough that it is unlikely to be used in code or prompt outside its intended purpose. Workflow is generic keyword and used in so many contexts both inside the codebase and orchestration tooling like say temporal.io or others that name their constructs “workflows”.

firemelt 4mo ago

hi boris I get confused shpuld I kep using /feature-dev of worfklows if I want to addinga feature to my app?

dbbk 4mo ago

Personally I would just like to be able to read more than 2 lines of an AskUserQuestion on the iOS app. Ever since the feature launched it's truncated the question, so you cannot actually read it. Does anyone at Anthropic use the iOS app? Ever?