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LLM Index

Mistral vs. Pythia

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

Attribute Mistral Pythia
Developer Mistral AI EleutherAI, Together
Current generation Mistral 3 –
Initial release 2023-09-27 2023-02-13
Instruct tuned Yes No
Coding Yes No
Finetuning Yes Yes
Open source Yes Yes
License Apache 2.0 Apache 2.0
Model sizes 3B, 8B, 14B, 675B (41B active) 1B, 1.4B, 2.8B, 6.9B, 12B
Links
Website Pricing
Website

Mistral

Mistral is a family of efficient open and hosted models spanning edge deployment through frontier-scale multimodal workloads. Mistral 3 is the current generation.

Mistral AI launched Mistral 7B in September 2023 and followed it with the Mixtral mixture-of-experts models and hosted Small and Large tiers. Mistral 3, released in December 2025 under Apache 2.0, includes dense 3B, 8B, and 14B Ministral models plus Mistral Large 3, a 675B-parameter mixture-of-experts model with 41B active parameters. The family supports instruction tuning, reasoning variants, multilingual use, code, and image understanding.

Further reading

Pythia

The most recent (as of May 2023) effort from EleutherAI, Pythia is a set of LLMs trained on The Pile. While it appears to outperform OPT and GPTNeo, its performance against GPT-J is unclear. Versions of Pythia have also been instruct-tuned by the team at Together.

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