OpenAI Releases ChatGPT - This Week in AI

This week in AI we have stories about OpenAI's new ChatGPT model for dialogue and a new startup working on "copilot for lawyers".

2 months ago   •   3 min read

By Peter Foy

Welcome to our This Week in AI roundup - this week we have stories about OpenAI's new ChatGPT model for dialogue and a new startup working on "copilot for lawyers".

  1. OpenAI Releases ChatGPT: Optimizing Language Models for Dialogue
  2. Copilot for Lawyers raises $5M from OpenAI Fund

💎 Top Stories

OpenAI Releases ChatGPT: Optimizing Language Models for Dialogue

OpenAI unveiled a prototype general-purpose chatbot and it electrified the Twittersphere. It is capable of debugging and coding, writing long-form content, scripts, and essays.

The model they trained is called ChatGPT, which interacts in a conversational way and has the ability to answer follow-up questions, admit mistakes, challenge incorrect premises, and reject inappropriate requests.

Key points:

  • ChatGPT is fine-tuned from a model in the GPT-3.5 series.
  • OpenAI used Reinforcement Learning from Human Feedback (RLHF) methods for training the model.
  • The company used supervised fine-tuning for initial model training, with human AI trainers providing conversations.
  • They collected comparison data for reward model training, by sampling several alternative completions from conversations with AI trainers.
  • They are also using the Moderation API to warn or block certain types of unsafe content.
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Limitations of the model include:

  • The model can be verbose, overuse certain phrases, and have inaccurate or nonsensical answers.
  • It is sometimes sensitive to tweaks to the input phrasing or attempting the same prompt multiple times.
  • Users can provide feedback on problematic model output through the UI

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ChatGPT: Optimizing Language Models for Dialogue
We’ve trained a model called ChatGPT which interacts in a conversational way. The dialogue format makes it possible for ChatGPT to answer followup questions, admit its mistakes, challenge incorrect premises, and reject inappropriate requests. ChatGPT is a sibling model to InstructGPT, which is train…

Copilot for Lawyers raises $5M from OpenAI Fund

Harvey, a startup building a "copilot for lawyers," has emerged from stealth with $5 million in funding from OpenAI Startup Fund, Jeff Dean, and Elad Gil.

Key points:

  • Harvey was founded by Winston Weinberg, a former securities and antitrust litigator, and Gabriel Pereyra, a former research scientist at DeepMind, Google Brain, and Meta AI.
  • Harvey provides lawyers with a natural language interface for their existing workflows.
  • It can answer questions in natural language and generate legal arguments and drafts.
  • Harvey's purpose is to serve as an intermediary between tech and lawyers, making them more efficient and allowing them to focus on higher value tasks.
  • Harvey is currently in beta and is being used by lawyers and legal aid organizations.
  • It faces competition from companies like Casetext, Klarity, and Augrented.
  • The company was funded by OpenAI Startup Fund, which in addition to capital, provides companies with access to new OpenAI systems and Azure resources from Microsoft.

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Harvey, which uses AI to answer legal questions, lands cash from OpenAI
Harvey, a startup using AI to answer legal questions, has secured an investment from OpenAI as well as Google AI head Jeff Dean.

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