ChatGPT vs. Command

Overview

ChatGPT is OpenAI's consumer and business AI product, powered by the GPT model family. GPT-5.6 is the current generation for advanced reasoning, coding, computer use, and professional work.

ChatGPT launched in November 2022 on GPT-3.5 and later added GPT-4, GPT-4o, the o-series reasoning models, and GPT-5. OpenAI released GPT-5.6 in July 2026 across ChatGPT, Codex, and the API. The generation includes the flagship Sol tier, the balanced Terra tier, and the fast, cost-efficient Luna tier. GPT-5.5 Instant remains available for fast everyday conversations, while GPT-5.6 powers higher-effort reasoning options on eligible plans.

Initial release: 2022-11-30

Current generation: GPT-5.6

Reference

https://chatgpt.com

Further Reading

• https://openai.com/blog/chatgpt
• https://openai.com/research/instruction-following
• https://openai.com/index/introducing-gpt-5-5/
• https://openai.com/index/gpt-5-6/

Overview

Command is Cohere's enterprise model family for agents, retrieval-augmented generation, multilingual work, and private deployment. Command A+ is the current open-weight generation.

Cohere develops enterprise language models with an emphasis on retrieval, citations, multilingual applications, tool use, and data sovereignty. Command A+, released in May 2026, is a 218B-parameter mixture-of-experts model with 25B active parameters. It supports text and image input, reasoning, agentic workflows, 48 languages, and private deployment under the Apache 2.0 license.

Initial release: 2021-11-15

Current generation: Command A+

Reference

https://cohere.com/command

Further Reading

• https://cohere.com/blog/command-a-plus