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Model Behavior Architect

Mistral AI Paris Full-time Research Posted Sep 29, 2025
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What it’s like to work at Mistral AI

Open-Source AI · Paris

4
Employee Rating
3.6
Work-Life Balance
160
Open Roles
ship-fasteng-drivenflatmany-hatsopen-source

What employees love

  • Small team punching way above weight — Mixtral, Mistral Large
  • European AI champion with strong research DNA

What could be better

  • Very early-stage — processes are minimal
  • Paris-centric with limited remote options
View full Mistral AI culture profile →

About the Role

About Mistral    At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life.   We democratize AI through high-performance, optimized, open-source and cutting-edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code and Mistral Compute - a suite that brings frontier intelligence to end-users.   We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between France, USA, UK, Germany and Singapore. We are creative, low-ego and team-spirited.   Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on https://mistral.ai/careers.   Mistral AI participates in the E-Verify program   By applying, you agree to our Applicant Privacy Policy. About the role As a Model Behavior Architect, you are at the forefront of defining and measuring LLM behaviour.   We are looking for people who have built a career in engineering, machine learning, and large language models and are experts in model evaluation, policy writing, and creating eval pipelines for complicated tasks. Your role is to work hand-in-hand with our Science team to define what ‘good’ looks like for Reasoning, Audio, Alignment, Tools, and all Frontier bets.   Join us if you are passionate about tackling cutting-edge, open-ended research challenges and transforming your insights into best-in-class models.

What you will do

About you

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Frequently Asked Questions

What is the work-life balance like at Mistral AI?
Mistral AI has a work-life balance score of 3.6/5 based on employee reviews. This is about average for the AI/tech industry.
What is Mistral AI’s culture like?
Mistral AI is characterized by these culture values: ship-fast, eng-driven, flat, many-hats, open-source. Based on employee reviews, the company has an overall rating of 4/5. Small team punching way above weight — Mixtral, Mistral Large
How many open roles does Mistral AI have?
Mistral AI currently has 160 open roles across departments including engineering, product, sales, and more. Roles are refreshed daily from their careers page.
Is this role remote-friendly?
This role is located in Paris. Check the job description above for specific location and remote work details.
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