Co-Founder CEO @polarityco | CS & Math @UWaterloo | prev @Shopify
Joined August 2018
- Tweets 1,382
- Following 984
- Followers 1,475
- Likes 3,634
53 Photos and videos
Alex retweeted
Jun 13
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.
The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.
Access to all other Claude models is not affected.
We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.
Read our full statement: anthropic.com/news/fable-myt…
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Fable 5 is state-of-the-art on nearly all tested benchmarks, with exceptional performance in software engineering, knowledge work, scientific research, and vision.
The longer and more complex the task, the larger Fable 5’s lead over our other models.
ALT Benchmark table titled Mythos 5 & Fable 5, comparing Claude Mythos 5 and Fable 5 against Claude Mythos Preview, Claude Opus 4.8, GPT 5.5, and Gemini 3.1 Pro.
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Alex retweeted
We recently submitted a confidential S-1. We expect it to leak so we’re just announcing it. We have not decided on timing yet; it may be a while because there are things we want to do that are likely easier as a private company. But it’s a complicated set of tradeoffs and this gives us the option to go public sooner if that ends up being best.
This announcement is being made pursuant to Rule 135 under the Securities Act of 1933, as amended, and does not constitute an offer to sell or the solicitation of an offer to buy any securities. Any offers, solicitations of offers to buy, or any sales of securities will be made in accordance with the registration requirements of the Securities Act.
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Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors.
Available today at the same price.
ALT Benchmark table showing how Claude Opus 4.8 compares to its predecessor and to other models on tests of coding, agentic skills, reasoning, and practical knowledge work tasks.
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May 19
This is crazy work icl
May 19
JUST IN: OpenAI co-founder Andrej Karpathy joins Anthropic.
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May 18
Today we end engineer Slack panic.
Experience a seamless way to work with your team using agent behaviour monitoring connections.
Out now on Product Hunt! (please upvote)🥳
producthunt.com/products/pol…
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May 18
Get instant notifications in Slack by tagging the Polarity bot, inquire about any agent connected and get fed results about flagged traces.
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May 18
We're extremely grateful to the wonderful companies and partnerships allowing us to test this rollout, request a demo today ❤️
polarity.so/calendar
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May 16
Codex is going to write a million AI agents this year.
About 5% of them will work twice in a row.
@polarityco is for the other 95% which fail unknowingly.
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May 15
My co-founder put me as a 'notable speaker' for Toronto Tech Week and I got selected.
If you wanna hear me talk, register here:
luma.com/mq5t6vp2
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May 14
Holy shit finally lol
You've been asking for this one...
Now in preview: Codex in the ChatGPT mobile app.
Start new work, review outputs, steer execution, and approve next steps, all from the ChatGPT mobile app. Codex will keep running on your laptop, Mac mini, or devbox.
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May 14
In 2027, shipping an AI agent will look like this. Most teams haven't caught up yet.
A thread video👇
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May 14
All it takes is one prompt to becomes a real test. Services such as Stripe, Postgres, or whatever your agent touches can be included.
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May 14
And it runs at SCALE.
10,000 sandboxes to be exact.
Built this at Polarity. Get started testing your agents today with code 'PLG'.
polarity.so/keystone
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May 13
Open sourced one of our Internal DBs! Super fast at Agent Trace Querying FTS
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May 12
the most important skill in starting a company isn't building.
it's noticing.
we started polarity with as a QA agent. things were going well. but on every customer call, i kept hearing things I didn't expect.
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May 12
every team was building agents internally. and none of them had a real way to test them.
the agent qa problem was bigger than the product we'd built, it showed me there is a new market to capture when it comes to these personalized agents of companies
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