Ground Truth
Jonathan LebensoldWriting about the tools, practices, lessons learned behind shipping reliable AI systems
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 13 | Subscribers | Read | lebensold.substack.com |
Curious about how many subscribers Ground Truth has or want to find similar newsletters? Reletter has got you covered. We collated all the information we could find from across the web in our database of over three million newsletters.
Check the email archives, get traffic estimates, engagement scores and more to discover the best advertising opportunities.
Our search tool helps you locate relevant newsletters for any topic and compare their stats for better sponsorship decisions.
Latest Issues
Recent posts by this newsletter. Browse the email archive.
The Jagged Frontier Is an Evaluation Problem
I was listening to The Economist’s Boss Class podcast a few months ago when I heard Ethan Mollick describe something I’d seen a dozen times but never had a name for. He called it the jagged frontier; the idea that AI capabilities don’t adva...
Visual workflows are procedural programming in a costume
I’m always blown away looking at an agent described as an visual workflow. The boxes and lines expanding a collapsing are a joy to witness, and they scratch the same part of my brain that obsessed over tech trees in real-time strategy games...
Runbooks: what agents need to hill-climb
Last month I watched an agent run a six-step evaluation pipeline. It called the right APIs. It generated SQL that was mostly correct. It even caught a schema error and fixed it on the second try. Then it wrote a summary, declared the task c...
Generation Got Cheap. Verification Didn't.
Last spring, shipping with GPT-4o meant budgeting $5 per million input tokens. Enterprise teams paying for Claude Opus were spending $15 input, $75 output. Twelve months later, GPT-5.2 sells for $1.75 input. Anthropic slashed Opus by 67%. G...
Similar Newsletters
Other publications recommended by the authors of this newsletter.
Authors
The writers behind this newsletter.
Software engineer turned privacy researcher turned founder. Building Jetty because AI has an evaluation problem.
Frequently Asked Questions
How can I access the email archive for Ground Truth?
You can find recent issues that have been published by Ground Truth on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
How many subscribers does Ground Truth have?
To see how many people subscribe to Ground Truth, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
How can I advertise in Ground Truth?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Ground Truth as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
How much does it cost to sponsor a publication like Ground Truth?
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact Ground Truth using the contact information provided and ask for a copy of their media kit.
How can I find newsletters similar to Ground Truth?
Scroll up to where it says Similar Newsletters to see other publications like Ground Truth. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Ground Truth?
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.