
agent artist @letta_ai | @LTIatCMU @bitspilaniindia
San Francisco, CA
Joined July 2015
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Devansh Jain retweeted
EVALUESTEER: Measuring Reward Model Steerability Towards Values and Preferences
🎓 Led by @GhateKshitish
🎤 Presented by me!
📍 Hall H, Poster Session E | #2197
🗓️ Oct 26, 4:45–6:15 PM
xitter.cf/GhateKshitish/status/1…
Introducing FrontierMemory: a new way to evaluate agent memory through downstream task performance.
While existing memory benchmarks focus on recall (saturated via agentic search), FrontierMemory focuses on how agents learn from experience.
sota on chonkbench 🇫🇷
Meet Mistral Large 4, aka Le Chonk.
• 1T parameters, natively multimodal. 49B active.
It is the best open weights model from US or Europe on aggregated benchmarks.
• State-of-the-art on critical workloads, including cyber defense, manufacturing and finance and it surpasses closed frontier models on visual grounding.
• Forged in Europe end-to-end and is deployable from Europe via our own Mistral Cloud infrastructure.
• Available to all via API today. Working with cybersecurity partners privately.
Open weights release end of October.
Devansh Jain retweeted
Today we’re announcing Not Diamond Code, the world’s most powerful intelligent model router for long-horizon coding agents.
Not Diamond works with any gateway or harness, including Claude Code, to select the best model and reasoning effort for each step, reducing costs by 20-65% without impacting quality.
> maybe continual learning should just focus on loading the right information up for icl (ie into the context window)
Replying to @oneill_c
13/ What I take away from all this is that all the training to create the model is engineered around crafting the best possible ICL mechanism. Further training degrades this mechanism, at least for knowledge acquisition, and maybe continual learning should just focus on loading the right information up for icl (ie into the context window)
So this provides an answer to the architecture question, at least for now: the channel worth engineering for memory is the one that comes with addresses ie the context.
Paper: arxiv.org/abs/2607.11020
Code and data to follow shortly
Done at @baseten.
Devansh Jain retweeted
Really nice research from @baseten on parametric learning vs in-context learning.
ICL is the 'bitter lesson' of continual learning. Each new generation of model will be better at ICL than the last. Mechanisms for CL through context will ride the waves of model improvements.
Replying to @oneill_c
13/ What I take away from all this is that all the training to create the model is engineered around crafting the best possible ICL mechanism. Further training degrades this mechanism, at least for knowledge acquisition, and maybe continual learning should just focus on loading the right information up for icl (ie into the context window)
So this provides an answer to the architecture question, at least for now: the channel worth engineering for memory is the one that comes with addresses ie the context.
Paper: arxiv.org/abs/2607.11020
Code and data to follow shortly
Done at @baseten.
Agents can now not only rewrite their memory, but also rewrite the execution code they run in (the harness) through Mods.
Mods (inspired by Pi's extension system) allow for harness-level changes like:
- modifying context
- injecting custom tools
- customizing the statusline
Was using Fable 5 to write my self-improving agent harness.
Anthropic flagged it as frontier AI research.
The steering vector kicked in and it started implementing hermes agent 🤨
Devansh Jain retweeted
the core of this – knowledge that compounds across conversations, health checks, markdown “wiki” with backlinks – is how Letta agents have been managing their memory for ages 😎
the difference is your agent builds and maintains it all. you just talk to it.
LLM Knowledge Bases
Something I'm finding very useful recently: using LLMs to build personal knowledge bases for various topics of research interest. In this way, a large fraction of my recent token throughput is going less into manipulating code, and more into manipulating knowledge (stored as markdown and images). The latest LLMs are quite good at it. So:
Data ingest:
I index source documents (articles, papers, repos, datasets, images, etc.) into a raw/ directory, then I use an LLM to incrementally "compile" a wiki, which is just a collection of .md files in a directory structure. The wiki includes summaries of all the data in raw/, backlinks, and then it categorizes data into concepts, writes articles for them, and links them all. To convert web articles into .md files I like to use the Obsidian Web Clipper extension, and then I also use a hotkey to download all the related images to local so that my LLM can easily reference them.
IDE:
I use Obsidian as the IDE "frontend" where I can view the raw data, the the compiled wiki, and the derived visualizations. Important to note that the LLM writes and maintains all of the data of the wiki, I rarely touch it directly. I've played with a few Obsidian plugins to render and view data in other ways (e.g. Marp for slides).
Q&A:
Where things get interesting is that once your wiki is big enough (e.g. mine on some recent research is ~100 articles and ~400K words), you can ask your LLM agent all kinds of complex questions against the wiki, and it will go off, research the answers, etc. I thought I had to reach for fancy RAG, but the LLM has been pretty good about auto-maintaining index files and brief summaries of all the documents and it reads all the important related data fairly easily at this ~small scale.
Output:
Instead of getting answers in text/terminal, I like to have it render markdown files for me, or slide shows (Marp format), or matplotlib images, all of which I then view again in Obsidian. You can imagine many other visual output formats depending on the query. Often, I end up "filing" the outputs back into the wiki to enhance it for further queries. So my own explorations and queries always "add up" in the knowledge base.
Linting:
I've run some LLM "health checks" over the wiki to e.g. find inconsistent data, impute missing data (with web searchers), find interesting connections for new article candidates, etc., to incrementally clean up the wiki and enhance its overall data integrity. The LLMs are quite good at suggesting further questions to ask and look into.
Extra tools:
I find myself developing additional tools to process the data, e.g. I vibe coded a small and naive search engine over the wiki, which I both use directly (in a web ui), but more often I want to hand it off to an LLM via CLI as a tool for larger queries.
Further explorations:
As the repo grows, the natural desire is to also think about synthetic data generation + finetuning to have your LLM "know" the data in its weights instead of just context windows.
TLDR: raw data from a given number of sources is collected, then compiled by an LLM into a .md wiki, then operated on by various CLIs by the LLM to do Q&A and to incrementally enhance the wiki, and all of it viewable in Obsidian. You rarely ever write or edit the wiki manually, it's the domain of the LLM. I think there is room here for an incredible new product instead of a hacky collection of scripts.
> an agent whose identity lives in its memory, not its model weights
> differentiator for [enterprise] agents will increasingly be what memory they have accumulated rather than which model they call
As AI reasoning gets good enough, we think memory will be the next bottleneck for agents. Can your agent improve with more experience?
We call this Memory Scaling, and it's related but different from continual learning. A few examples and challenges:
databricks.com/blog/memory-s…
Devansh Jain retweeted
The new Anthropic managed agents API is basically the Letta API that we've had since a year ago, but closed source and with provider lock-in. They even have read-only memory blocks and memory block sharing -- something which was unique to the Letta agents for a long time.
Funny enough, we actually don't think this is the direction agents are going to go. Having API interfaces for memory blocks and tools is certainly convenient - you can spin up stateful agents as API services with just a few lines of code. But its also limiting: LLMs today are extremely adept at computer-use, and representing their memories in this way limits the action space of agents and their ability to learn.
It's important to remember that just because something comes out of a frontier lab, doesn't mean its the "right" answer long-term. The Letta API ~1 year ago was somewhat of an antipattern in a sea of agent framework libraries offered by every lab. But now, stateful agent APIs are becoming the new norm - especially as providers try to lock in memory/state into their platforms to increase switching costs (which is exactly why we believe memory should live outside of model providers)
If you want to see what the future is going to look like, follow @Letta_AI




























