The AI Engineer
Paolo PerroneBecome dangerously good at AI Engineering.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 49 | Founded | 9 months ago | Last Issue | 5 days ago |
| Active | |||||
Read this Newsletter
theaiengineer.substack.comLatest Issues
RAG vs Fine-Tuning
RAG and fine-tuning solve different problems. RAG pulls external text into the prompt at query time, so the model answers from documents you can edit or cite. Fine-tuning retrains the model’s weights until a skill, format, or tone is built...
Should You Self-Host Inference?
Self-hosting inference pays off in two cases: you push past roughly two million tokens a day, or your data legally cannot leave your network. Below that line a hosted API is cheaper, and it spares your team from running GPUs at all. For mos...
AI Coding Tools: What Changed in the Last 6 Months
AI coding tools stopped competing on autocomplete and started competing on autonomy. Agents moved into the terminal and the cloud. Every major vendor shipped its own model. SWE-bench cleared 80% and bunched up, flat-rate plans gave way to m...
Mem0 vs Zep vs Letta vs cognee
cognee, Mem0, Zep, and Letta all give an AI agent memory that survives past a single conversation, in four different ways. Mem0 extracts facts into a store. Zep builds a temporal knowledge graph. Letta lets the agent edit its own memory. co...
What is LLM Observability?
LLM observability means giving your app a black box, the same idea as an airplane’s flight recorder: something that captures every step of a request so you can replay exactly what happened when the output is wrong.
🧭 Part 9 of the RAG &...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for The AI Engineer.
| Subscribers | Engagement | 78 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
SEO Reach
Where The AI Engineer ranks on Google, and how much search traffic it brings in.
| Ranked Keywords | 113 | Monthly Search Traffic | Top Keywords |
|---|
Chart Rankings
How this newsletter ranks in the official Substack charts.
| #205 |
Authors
The writers behind this newsletter.
Shipping Production AI: Agents, Inference, GPU. Read by 1M+ AI engineers.
Frequently Asked Questions
How can I access the email archive for The AI Engineer?
You can find recent issues that have been published by The AI Engineer 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 The AI Engineer have?
To see how many people subscribe to The AI Engineer, 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 The AI Engineer?
Newsletter advertising can be extremely effective when it's done right. Before you pitch The AI Engineer 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 The AI Engineer?
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 The AI Engineer using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to The AI Engineer?
Scroll up to where it says Related Newsletters to see other publications like The AI Engineer. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact The AI Engineer?
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.