interdisciplinarian. leading claude platform @anthropicai
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Joined July 2009
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there are cathedrals everywhere for those with the eyes to see
ps. we are hiring and are actively trying to solve these problems
A very clear eyed picture of what’s coming. You will need a software factory for defense, not just internal productivity.
Just spent the last 7 days on the front lines of the vulnpocalypse fending off an active cyber attack on one of our products.
Some thoughts:
- Software factories are going to be required equipment for everyone. There’s just no way to keep up with the pace of highly automated adversaries without one.
- We were lucky because we had spent the last few months getting our software factory running well. It is nice to have for product development but proved to be absolutely essential this week.
- At the minimum you need to have a coding server in the cloud pre-provisioned with read only access to all your logs and all the services you depend on for observability. With that in place you are a prompt away from reasonably good situational awareness, ongoing monitoring with loops, and ability for coding agents to validate fixes against your actual, observed attack patterns.
- Shared coding server also unlocks multiplayer incident response where everyone can see every session and jump in as needed. Sharing session links that can be forked is much higher bandwidth than re-explaining things.
- You don’t need to be Ramp/Stripe/Uber scale to have a working software factory in the cloud. We are a team of 3. Ours is built with an @opencode server (thanks @thdxr!), a forked version of compound engineering optimized for automated workflows (thanks @kieranklaassen!) and a multiplayer agent in slack that handles crons (we have our own harness but pick your favorite here).
- To get our software factory up and running well, we had to stop all new product development for ~6 weeks and just focus on getting the validation systems working that enabled us to reliably shipping PR without human code review. This felt very painful in the moment but was totally worth the eventual speedup in velocity.
- KYC for @AnthropicAI & @OpenAI cyber programs is now easy and quick (at least for defensive access), but a day felt like a lifetime this week. Submit your app now before you really need it.
- Getting Mythos access unlocked a deeper level of analysis that helped us shift from reactive mitigation to proactive patching. Wish we had done this a few weeks earlier. Get started now!
We GA’d opus 5.5 fast mode yesterday where you can run opus at 2.5x speeds at 2x the cost
And now we’re making Claude product surfaces faster across the board. Baseline speeds are up 3x-1.5x.
Opus 5.5 FAST
Opus 5.5 fast mode in the Claude Platform is no longer in research preview, and we’ve removed the waitlist!
It’s the same Opus 5.5 but up to 2.5x faster, at $8 / $40 per million tokens.
It's also available in Microsoft Foundry (Hosted on Azure), with Google Cloud coming soon.
Fast mode in Claude Code remains unchanged, and uses extra usage credits.
See our docs here:
platform.claude.com/docs/en/…
xitter.cf/ClaudeDevs/status/2054…
Distilling claude to produce models without safeguards opens up new attack vectors. We’re making it harder to do so to improve safety.
Over the last few months, we’ve made significant progress in reducing the effectiveness of distillation attacks against Claude.
In this post, we explain how: anthropic.com/research/disti…
If you’re a max or teams subscriber, you have your monthly api credit to use to try this out :)
Btw if you’re curious why this would result in better performance, you can watch this video on giving tokens jobs. In short, tokens aren’t fungible; giving them jobs can improve performance on real world tasks
youtu.be/PXj0p_mW9nI?is=tvoG…
Angela Jiang retweeted
We didn’t anticipate the demand for the Claude Startups program. In the first 48 hours of the program, we received 21x the number of applications compared to the last 5 months it’s been live.
We let way too many people in this time, so we’ll need to pause on giving out the Team plan and API credits benefits. The other benefits (Startup Stack, Applied AI office hours/events) will remain. If you’ve already claimed the Claude offers, they’ll still remain in your account.
We didn’t properly tune the acceptance criteria at the start, and many non-startups were accepted this time around. We’re fixing this now. We’re sending an email now to everybody who hasn’t claimed their benefits yet, and will re-verify those applications so we can keep Claude Startups for startups 🙏
Angela Jiang retweeted
To secure open-source software, we’re launching OSS Scanner.
We’ll use our frontier models to periodically scan opted-in open-source projects for vulnerabilities, at no cost. Our reports will provide a proof-of-concept, explanation, and suggested fix.
anthropic.com/research/launc…
This is now fully rolled out to all qualifying subscribers. There’s never been a better time to build!
Monthly API credits are now available on Max and Team plans: $100 on Max 5x, $200 on Max 20x, and up to $500 pooled on Team. Use them on any Claude model.
How it works and full terms: support.claude.com/en/articl…
Angela Jiang retweeted
We’re rolling out monthly Claude Platform API credits for Max and Team plans:
Max 5x: $100
Max 20x: $200
Team: up to $500, pooled
Works on any model, including Haiku 5.5, in your code or third-party harnesses.
How it works and full terms: support.claude.com/en/articl…
Angela Jiang retweeted
You can now discover tools, agents and expert partners on Claude Marketplace. Use it to:
- Add connectors and plugins like Slack and Notion
- Buy agents and products from companies like Cursor and CrowdStrike
- Scale with service partners like Accenture and Deloitte
This was done by a fleet of 950 agents working 21 hours and using 210 million tokens.
Long running agentic tasks can unlock new discoveries.
Claude has discovered a previously unknown enzyme system hidden in the DNA of bacteriophages. Beside the enzyme’s gene sits a long array of repeating DNA—a structure that looks somewhat similar to CRISPR.
We don’t yet understand what this system does, but only a handful of known systems share its features, and all of them are able to cut, copy, and paste DNA. Historically, the discovery of such programmable systems has helped revolutionize medicine. CRISPR, for instance, is now the foundation of genetic medicines. But it will take much more work to learn what this system does, and whether it can be put to similar use.
Read more: anthropic.com/news/claude-di…
