chore: Migrate embeddings.memgpt.ai to embeddings.letta.com (#3757)

README.md

@@ -181,7 +181,7 @@ In the CLI tool, you'll be able to create new agents, or load existing agents:
 ```
 🧬 Creating new agent...
 ? Select LLM model: letta-free [type=openai] [ip=https://inference.letta.com]
-? Select embedding model: letta-free [type=hugging-face] [ip=https://embeddings.memgpt.ai]
+? Select embedding model: letta-free [type=hugging-face] [ip=https://embeddings.letta.com]
 ->  🤖 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
@@ -247,7 +247,7 @@ letta run
 ```
 🧬 Creating new agent...
 ? Select LLM model: letta-free [type=openai] [ip=https://inference.letta.com]
-? Select embedding model: letta-free [type=hugging-face] [ip=https://embeddings.memgpt.ai]
+? Select embedding model: letta-free [type=hugging-face] [ip=https://embeddings.letta.com]
 ->  🤖 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

tests/configs/embedding_model_configs/letta-hosted.json

@@ -1,7 +1,7 @@
 {
-    "embedding_endpoint": "https://embeddings.memgpt.ai",
-    "embedding_model": "BAAI/bge-large-en-v1.5",
-    "embedding_dim": 1024,
-    "embedding_chunk_size": 300,
-    "embedding_endpoint_type": "hugging-face"
+  "embedding_endpoint": "https://embeddings.letta.com",
+  "embedding_model": "BAAI/bge-large-en-v1.5",
+  "embedding_dim": 1024,
+  "embedding_chunk_size": 300,
+  "embedding_endpoint_type": "hugging-face"
 }

tests/configs/letta_hosted.json

@@ -4,7 +4,7 @@
   "model_endpoint": "https://inference.letta.com",
   "model": "memgpt-openai",
   "embedding_endpoint_type": "hugging-face",
-  "embedding_endpoint": "https://embeddings.memgpt.ai",
+  "embedding_endpoint": "https://embeddings.letta.com",
   "embedding_model": "BAAI/bge-large-en-v1.5",
   "embedding_dim": 1024,
   "embedding_chunk_size": 300