docs: refresh readme (#1892)

README.md

@@ -1,7 +1,30 @@
-# Letta (previously MemGPT)
+<p align="center">
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="assets/Letta-logo-RGB_GreyonTransparent_cropped_small.png">
+    <source media="(prefers-color-scheme: light)" srcset="assets/Letta-logo-RGB_OffBlackonTransparent_cropped_small.png">
+    <img alt="Letta logo" src="assets/Letta-logo-RGB_GreyonOffBlack_cropped_small.png" width="500">
+  </picture>
+</p>
+
+<div align="center">
+<h1>Letta (previously MemGPT)</h1>
+
+<h3>
+
+[Homepage](https://letta.com) // [Documentation](https://docs.letta.com) // [Letta Cloud](https://forms.letta.com/early-access)
+
+</h3>
+
+**👾 Letta** is an open source framework for building stateful LLM applications. You can use Letta to build **stateful agents** with advanced reasoning capabilities and transparent long-term memory. The Letta framework is white box and model-agnostic.
+  
 [![Discord](https://img.shields.io/discord/1161736243340640419?label=Discord&logo=discord&logoColor=5865F2&style=flat-square&color=5865F2)](https://discord.gg/letta)
-[![Twitter Follow](https://img.shields.io/badge/follow-%40Letta__AI-1DA1F2?style=flat-square&logo=x&logoColor=white)](https://twitter.com/Letta_AI)
-[![arxiv 2310.08560](https://img.shields.io/badge/arXiv-2310.08560-B31B1B?logo=arxiv&style=flat-square)](https://arxiv.org/abs/2310.08560)
+[![Twitter Follow](https://img.shields.io/badge/Follow-%40Letta__AI-1DA1F2?style=flat-square&logo=x&logoColor=white)](https://twitter.com/Letta_AI)
+[![arxiv 2310.08560](https://img.shields.io/badge/Research-2310.08560-B31B1B?logo=arxiv&style=flat-square)](https://arxiv.org/abs/2310.08560)
+[![Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-silver?style=flat-square)](LICENSE.md)
+[![Release](https://img.shields.io/github/v/release/cpacker/MemGPT?style=flat-square&label=Release&color=limegreen)](https://github.com/cpacker/MemGPT/releases)
+[![GitHub](https://img.shields.io/github/stars/cpacker/MemGPT?style=flat-square&logo=github&label=Stars&color=gold)](https://github.com/cpacker/MemGPT)
+
+</div>
 
 > [!NOTE]
 > **Looking for MemGPT?** You're in the right place!
@@ -10,15 +33,90 @@
 >
 > You use the **Letta _framework_** to create **MemGPT _agents_**. Read more about the relationship between MemGPT and Letta [here](https://www.letta.com/blog/memgpt-and-letta).
 
-Visit our [documentation page](https://docs.letta.com) for information on setup and usage.
+## ⚡ Quickstart
 
-## How to Get Involved
-* **Contribute to the Project**: Interested in contributing? Start by reading our [Contribution Guidelines](https://github.com/cpacker/MemGPT/tree/main/CONTRIBUTING.md).
-* **Ask a Question**: Join our community on [Discord](https://discord.gg/letta) and direct your questions to the `#support` channel.
-* **Report Issues or Suggest Features**: Have an issue or a feature request? Please submit them through our [GitHub Issues page](https://github.com/cpacker/MemGPT/issues).
-* **Explore the Roadmap**: Curious about future developments? View and comment on our [project roadmap](https://github.com/cpacker/MemGPT/issues/1200).
-* **Benchmark the Performance**: Want to benchmark the performance of a model on MemGPT? Follow our [Benchmarking Guidance](#benchmarking-guidance).
-* **Join Community Events**: Stay updated with the [event calendar](https://lu.ma/berkeley-llm-meetup) or follow our [Twitter account](https://twitter.com/Letta_AI).
+The two main ways to install Letta are through **pypi** (`pip`) or via **Docker**:
+* **`pip`** (guide below) - the easiest way to try Letta, will default to using SQLite and ChromaDB for the database backends
+* **Docker** (guide [here](https://docs.letta.com/install#run-letta-with-docker)) - recommended for production settings, will default to using Postgres (+ pgvector) for the database backend
 
-## Legal notices
-By using Letta and related Letta services (such as the Letta endpoint or hosted service), you agree to our [privacy policy](https://www.letta.com/privacy-policy) and [terms of service](https://www.letta.com/terms-of-service).
+### Step 1 - Install Letta using `pip`
+```sh
+$ pip install -U letta
+```
+
+### Step 2 - Set your environment variables for your chosen LLM / embedding providers
+```sh
+$ export OPENAI_API_KEY=sk-...
+```
+
+For Ollama (see our full [documentation](https://docs.letta.com/install) for examples of how to set up various providers):
+```sh
+$ export OLLAMA_BASE_URL=http://localhost:11434
+```
+
+### Step 3 - Run the Letta CLI
+
+You can create agents and chat with them via the Letta CLI tool (`letta run`):
+```sh
+$ letta run
+```
+```
+🧬 Creating new agent...
+? Select LLM model: letta-free [type=openai] [ip=https://inference.memgpt.ai]
+? Select embedding model: letta-free [type=hugging-face] [ip=https://embeddings.memgpt.ai]
+->  🤖 Using persona profile: 'sam_pov'
+->  🧑 Using human profile: 'basic'
+->  🛠️  8 tools: send_message, pause_heartbeats, conversation_search, conversation_search_date, archival_memory_insert, archival_memory_search, core_memory_append, core_memory_replace
+
+🎉 Created new agent 'InspiringSpinach'
+
+Hit enter to begin (will request first Letta message)
+
+💭 User engaged. Recognize as Chad. Acknowledge presence and establish connection. Explore interests and engage in meaningful discourse.
+🤖 Hello, Chad. It's nice to meet you. I am keen on learning and exploring new ideas and concepts. Is there a specific topic you'd like to discuss today?
+
+> Enter your message: my name is Brad, not Chad...
+
+💭 A discrepancy in identity. Reflect this change in core memory. Apologize for the oversight, and rectify the error.
+⚡🧠 [function] updating memory with core_memory_replace
+         First name: Chad
+        → First name: Brad
+💭 Apologize for the mistake in recognizing his name, and begin the conversation anew, addressing him by the correct name this time.
+🤖 I apologize for the oversight, Brad. Let's restart. It's a pleasure to meet you, Brad. Is there a specific topic you'd like to discuss today?
+
+> Enter your message:
+```
+
+### Step 4 - Run the Letta server
+
+You can start the Letta API server with `letta server` (see the full API reference [here](https://docs.letta.com/api-reference)):
+```sh
+$ letta server
+```
+```
+Initializing database...
+Running: uvicorn server:app --host localhost --port 8283
+INFO:     Started server process [47750]
+INFO:     Waiting for application startup.
+INFO:     Application startup complete.
+INFO:     Uvicorn running on http://localhost:8283 (Press CTRL+C to quit)
+```
+
+When you start the Letta API server, the ADE (Agent Development Environment) will be available on `http://localhost:8283`:
+<img alt="Screenshot of the Letta ADE (Agent Development Environment)" src="assets/letta_ade_screenshot.png" width="1600">
+
+In Letta, all agents are stored/persisted in the same database, so the agents you create in the CLI are accessible via the API and ADE, and vice versa. Check out the [quickstart guide on our docs](https://docs.letta.com/quickstart) for a tutorial where you create an agent in the Letta CLI and message the same agent via the Letta API.
+
+## 🤗 How to contribute
+
+Letta is an open source project built by over a hundred contributors. There are many ways to get involved in the Letta OSS project!
+
+* **Contribute to the project**: Interested in contributing? Start by reading our [Contribution Guidelines](https://github.com/cpacker/MemGPT/tree/main/CONTRIBUTING.md).
+* **Ask a question**: Join our community on [Discord](https://discord.gg/letta) and direct your questions to the `#support` channel.
+* **Report ssues or suggest features**: Have an issue or a feature request? Please submit them through our [GitHub Issues page](https://github.com/cpacker/MemGPT/issues).
+* **Explore the roadmap**: Curious about future developments? View and comment on our [project roadmap](https://github.com/cpacker/MemGPT/issues/1200).
+* **Join community events**: Stay updated with the [event calendar](https://lu.ma/berkeley-llm-meetup) or follow our [Twitter account](https://twitter.com/Letta_AI).
+
+---
+
+***Legal notices**: By using Letta and related Letta services (such as the Letta endpoint or hosted service), you are agreeing to our [privacy policy](https://www.letta.com/privacy-policy) and [terms of service](https://www.letta.com/terms-of-service).*