By Jim Shimabukuro (assisted by ChatGPT)
Editor
Introduction: Overwhelmed by the mishmash of players, companies, products, and services associated with chatbots, I collaborated with ChatGPT to develop a clarifying table. I hope this helps you as much as it does me. -js
Prompt: For chatbots such as ChatGPT, Gemini, Claude, Copilot, Pi, Poe, Perplexity, You.com, and DeepSeek, please identify the associated companies, major executives, and LLM engines.
ChatGPT’s response
Here’s a clean comparison table of the 9 major AI chatbots — showing their company, key executives, and LLM engines — for easier side-by-side viewing:
🧠 Major AI Chatbots Comparison Table (2025)
| Chatbot | Company | Key Executives | LLM Engine(s) |
|---|---|---|---|
| ChatGPT | OpenAI | Sam Altman (CEO), Jakub Pachocki (CTO), Brad Lightcap (COO) | GPT-4o, GPT-4, GPT-3.5 |
| Gemini | Google DeepMind | Demis Hassabis (CEO), Sundar Pichai (Alphabet CEO), Eli Collins (Gemini VP) | Gemini 1.5 Pro, Gemini 1.5 Flash |
| Claude | Anthropic | Dario Amodei (CEO), Daniela Amodei (President), Jared Kaplan (Chief Scientist) | Claude 3.5 Sonnet, Claude 3 Opus, Claude 3 Haiku |
| Copilot | Microsoft | Satya Nadella (CEO), Kevin Scott (CTO), Mikhail Parakhin (Copilot dev leader) | OpenAI GPT-4 (via Azure), customized RAG + Microsoft Graph + in-house components |
| Pi | Inflection AI (now largely merged with Microsoft) | Mustafa Suleyman (former CEO), Karén Simonyan (Chief Scientist) | Inflection-2.5 (legacy), some features now merged into Microsoft’s Copilot stack |
| Poe | Quora | Adam D’Angelo (CEO, also on OpenAI board) | Aggregator of GPT-4, Claude, Mistral, Command R+, Llama 3, Gemini (limited), etc. |
| Perplexity | Perplexity AI | Aravind Srinivas (CEO), Denis Yarats, Andy Konwinski, Johnny Ho (Co-founders) | GPT-4, Claude 3, Mistral, Meta Llama 3, Command R+, RAG stack |
| YouChat | You.com | Richard Socher (CEO, former Chief Scientist at Salesforce) | Proprietary model + integrations with GPT-4, Claude, Llama 3, Mistral |
| DeepSeek | DeepSeek | Anonymous founders (ex-TikTok and Tsinghua AI researchers) | DeepSeek-V2, DeepSeek-Coder, DeepSeek-MoE (open-source focus) |
A more detailed list view of this information
Here’s a detailed breakdown of major chatbots — ChatGPT, Gemini, Claude, Copilot, Pi, Poe, Perplexity, You.com, and DeepSeek — along with their associated companies, key executives, and LLM engines (as of mid-2025):
1. ChatGPT
- Company: OpenAI
- Key Executives:
- Sam Altman – CEO
- Jakub Pachocki – CTO
- Brad Lightcap – COO
- Mira Murati – Former CTO (now an advisor)
- LLM Engine: GPT-4o (latest), GPT-4, GPT-3.5
- Notes: ChatGPT is the flagship product using OpenAI’s GPT models, integrated with code interpreter, vision, and voice capabilities in premium versions.
2. Gemini
- Company: Google DeepMind (formerly Google Brain + DeepMind)
- Key Executives:
- Demis Hassabis – CEO, DeepMind
- Sundar Pichai – CEO, Alphabet
- Eli Collins – VP of Product, Gemini
- LLM Engine: Gemini 1.5 Pro, Gemini 1.5 Flash
- Notes: Gemini powers Bard (retired brand), now simply “Gemini,” integrated across Google Workspace and Android.
3. Claude
- Company: Anthropic
- Key Executives:
- Dario Amodei – CEO
- Daniela Amodei – President
- Jared Kaplan – Chief Science Officer
- LLM Engine: Claude 3.5 Sonnet (as of July 2025); also Claude 3 Opus and Claude 3 Haiku
- Notes: Claude is known for safety and alignment focus; strong adoption in enterprise and research.
4. Copilot
- Company: Microsoft
- Key Executives:
- Satya Nadella – Chairman & CEO
- Kevin Scott – CTO and EVP of AI
- Mikhail Parakhin – Former head of Bing & Advertising, key to early Copilot rollouts
- LLM Engine: OpenAI’s GPT-4 (via Azure), integrated with proprietary Microsoft layers and data
- Notes: Branded across Microsoft 365 (Word, Excel, Outlook), Windows, GitHub, and Azure AI Studio.
5. Pi (Personal Intelligence)
- Company: Inflection AI
- Key Executives:
- Mustafa Suleyman – Co-founder & CEO (joined Microsoft in 2024; Inflection is now semi-absorbed)
- Reid Hoffman – Co-founder (LinkedIn founder)
- Karén Simonyan – Co-founder & Chief Scientist
- LLM Engine: Formerly Inflection-2.5 (no longer independently updated after acquisition)
- Notes: Pi focused on emotionally supportive AI; parts of Inflection now support Microsoft Copilot stack.
6. Poe
- Company: Quora
- Key Executives:
- Adam D’Angelo – CEO (also on OpenAI board)
- LLM Engines: Acts as a multibot platform, offering:
- GPT-4 (OpenAI)
- Claude (Anthropic)
- Gemini (Google, select availability)
- Command R+ (Cohere)
- Mistral, Llama (Meta), and more
- Notes: Poe is more of a chatbot aggregator, with user-created bots and subscriptions for premium models.
7. Perplexity
- Company: Perplexity AI
- Key Executives:
- Aravind Srinivas – Co-founder & CEO
- Denis Yarats, Johnny Ho, Andy Konwinski – Co-founders
- LLM Engines:
- Uses OpenAI GPT-4, Claude 3, Mistral, Meta Llama 3, and Command R+
- Also building proprietary retrieval-augmented generation (RAG) layers
- Notes: A real-time, citation-backed AI search engine and assistant. Fast-growing alternative to Google Search.
8. YouChat (You.com)
- Company: You.com
- Key Executives:
- Richard Socher – Founder & CEO (former Chief Scientist at Salesforce)
- LLM Engines:
- Proprietary model + integrations with OpenAI, Claude, Mistral, Llama
- Notes: AI-powered search engine with customizable tools and apps; positioned as a privacy-centric alternative.
9. DeepSeek
- Company: DeepSeek (Chinese AI startup)
- Key Executives:
- Details less public, but reportedly led by former Tsinghua University AI researchers and ex-TikTok engineers
- LLM Engine: DeepSeek-V2, DeepSeek-Coder, DeepSeek-MoE
- Notes: Open-source LLM challenger gaining traction in the developer and academic communities.
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