DeepEval and Vertex AI

 Posted on 12 August 2024

Introduction When you’re working with Large Language Models (LLMs), it’s crucial to have an evaluation framework in place. Only by constantly evaluating and testing your LLM outputs, you can tell if the changes you’re making to prompts or the output you’re getting back from the LLM are actually good. In this blog post, we’ll look into one of those evaluation frameworks called DeepEval, an open-source evaluation framework for LLMs. It allows to “unit test” LLM outputs in a similar way to Pytest. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Deep dive into function calling in Gemini

 Posted on 6 August 2024

Introduction In this blog post, we’ll deep dive into function calling in Gemini. More specifically, you’ll see how to handle multiple and parallel function call requests from generate_content and chat interfaces and take a look at the new auto function calling feature through a sample weather application. What is function calling? Function Calling is useful to augment LLMs with more up-to-date data via external API calls. You can define custom functions and provide these to an LLM. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Control LLM costs with context caching

 Posted on 19 July 2024

Introduction Some large language models (LLMs), such as Gemini 1.5 Flash or Gemini 1.5 Pro, have a very large context window. This is very useful if you want to analyze a big chunk of data, such as a whole book or a long video. On the other hand, it can get quite expensive if you keep sending the same large data in your prompts. Context caching can help. Context caching is useful in reducing costs when a substantial context is referenced repeatedly by shorter requests such as: Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Control LLM output with response type and schema

 Posted on 15 July 2024

Introduction Large language models (LLMs) are great at generating content but the output format you get back can be a hit or miss sometimes. For example, you ask for a JSON output in certain format and you might get free-form text or a JSON wrapped in markdown string or a proper JSON but with some required fields missing. If your application requires a strict format, this can be a real problem. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

RAG API powered by LlamaIndex on Vertex AI

 Posted on 8 July 2024

Introduction Recently, I talked about why grounding LLMs is important and how to ground LLMs with public data using Google Search (Vertex AI’s Grounding with Google Search: how to use it and why) and with private data using Vertex AI Search (Grounding LLMs with your own data using Vertex AI Search). In today’s post, I want to talk about another more flexible and customizable way of grounding your LLMs with private data: the RAG API powered by LlamaIndex on Vertex AI. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Grounding LLMs with your own data using Vertex AI Search

 Posted on 1 July 2024

Introduction In my previous Vertex AI’s Grounding with Google Search: how to use it and why post, I explained why you need grounding with large language models (LLMs) and how Vertex AI’s grounding with Google Search can help to ground LLMs with public up-to-date data. That’s great but you sometimes need to ground LLMs with your own private data. How can you do that? There are many ways but Vertex AI Search is the easiest way and that’s what I want to talk about today with a simple use case. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Give your LLM a quick lie detector test

 Posted on 6 June 2024

Introduction It’s no secret that LLMs sometimes lie and they do so in a very confident kind of way. This might be OK for some applications but it can be a real problem if your application requires high levels of accuracy. I remember when the first LLMs emerged back in early 2023. I tried some of the early models and it felt like they were hallucinating half of the time. More recently, it started feeling like LLMs are getting better at giving more factual answers. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

Vertex AI's Grounding with Google Search - how to use it and why

 Posted on 29 May 2024

Introduction Once in a while, you come across a feature that is so easy to use and so useful that you don’t know how you lived without it before. For me, Vertex AI’s Grounding with Google Search is one of those features. In this blog post, I explain why you need grounding with large language models (LLMs) and how Vertex AI’s Grounding with Google Search can help with minimal effort on your part. Read More ↗︎
GenAI  VertexAI  Gemini  Google Cloud Platform 

A tour of Gemini 1.5 Pro samples

 Posted on 7 May 2024

Introduction Back in February, Google announced Gemini 1.5 Pro with its impressive 1 million token context window. Larger context size means that Gemini 1.5 Pro can process vast amounts of information in one go — 1 hour of video, 11 hours of audio, 30,000 lines of code or over 700,000 words and the good news is that there’s good language support. In this blog post, I will point out some samples utilizing Gemini 1. Read More →
GenAI  VertexAI  Gemini  Google Cloud Platform 

C# and Vertex AI Gemini streaming API bug and workaround

 Posted on 1 May 2024

A user recently reported an intermittent error with C# and Gemini 1.5 model on Vertex AI’s streaming API. In this blog post, I want to outline what the error is, what causes it, and how to avoid it with the hopes of saving some frustration for someone out there. Error The user reported using Google.Cloud.AIPlatform.V1 library with version 2.27.0 to use Gemini 1.5 via Vertex AI’s streaming API and running into an intermittent System. Read More →
GenAI  VertexAI  Gemini  DotNet  Google Cloud Platform