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LLM Index

Command vs. GPT-J

A side-by-side comparison of release history, capabilities, licensing and model sizes.

Attribute Command GPT-J
Developer Cohere EleutherAI
Current generation Command A+ –
Initial release 2021-11-15 2021-06-09
Instruct tuned Yes Yes
Coding Yes No
Finetuning Yes Yes
Open source Yes Yes
License Apache 2.0 Apache 2.0
Model sizes 218B (25B active) 6B
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Command

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.

Further reading

GPT-J

GPT-J is a model released by EleutherAI shortly after its release of GPTNeo, with the aim of delveoping an open source model with capabilities similar to OpenAI's GPT-3 model. With a larger size than GPTNeo, GPT-J also performs better on various benchmarks.

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