Nicolas Grenié

Basalt — Integrate AI in your product in seconds

96
Basalt is the platform to build and operate AI features : Craft high-quality prompts with our AI-powered Copilot, test and evaluate LLM outputs, deploy seamlessly with our SDK, monitor and refine performance in real conditions—all in a collaborative workflow.

Add a comment

Replies
Best
Nicolas Grenié

Are you building an AI feature in your product? Tell me:
How do you keep track of the prompts that are working and the ones that don't?
How do you compare which models work better for you?

Until now I feel a lot of us would answer: a google sheet, or a notion page shared with the team 🤦‍♂️
But if you are serious about adding AI to your product, you can't just leave it to manual work.

That's why @Basalt is the perfect tool for engineering and product teams you get to iterate on the wording of each prompt, you get test your prompts as the models eveolve.
At the end it gives you a dashboard to see performances. not anecdotal feedback.

The same way you would not write software without proper testing, you should not build AI feature without proper tooling.

Good job team 👏

Matthieu Vaxelaire

@picsoung Thanks for spotting and supporting @Basalt Nicolas !

Quentin Le Gall

@picsoung thank you for your full support @picsoung !

Guillaume Marquis

@picsoung Thanks for your support, you're the best✌!!

Francois de Fitte

@picsoung Thanks for the support !!

@picsoung Amazing work—this is something AI-driven teams really need :)

Guillaume Marquis

Hey Product Hunt! 👋

I’m Guillaume, co-founder & CTO of @Basalt , and I couldn’t be more excited to share what we’ve built with you today. 🚀


Why we built Basalt

Building AI features shouldn’t take months—but for many teams, it does. When working with LLMs, we faced the same frustrating loop:

❌ Manually tweaking prompts with no structured way to iterate

❌ Evaluating AI outputs based on “gut feeling” instead of real-world data

❌ Struggling to ship AI features that actually perform in production

We knew there had to be a better way. That’s why we built Basalt: an AI-native platform designed to help teams go from idea to production in seconds, not months.

How Basalt works


With Basalt, you can:


🛠 Craft best-in-class prompts with Basalt Copilot to help you write and improve them

Test & Evaluate LLM outputs using real-world datasets and structured grading

🚀 Deploy AI features directly into your product with our SDK

📊 Monitor performance with automated tracking and insights

💡 Collaborate with your team throughout the entire AI feature development journey

Special Offer for Product Hunt 🚀

We are giving out 1k free runs for our PH launch. It’s way enough for you to test how powerful Basalt is.

We’d love your feedback!

This is just the beginning, and we’re here to learn. Try Basalt, let us know what you think, and tell us what AI feature challenges you’re facing!

Thanks, Product Hunt! 🙌

Matthieu Vaxelaire

@guillaume_marquis3 Congrats for the solution you have built ! AI on your product in minutes, not month 💘

Quentin Le Gall

@guillaume_marquis3 Have fun un San Francisco Basalt team!! It is just the beginning!

John Tan
Launching soon!

@guillaume_marquis3 gonna test this out! congrats on the launch! 🚀

Edouard Uguen

A game changer in supporting our AI internal projects!

Guillaume Marquis

@edouard_uguen1 Thank you Edouard 💪

Francois de Fitte

@edouard_uguen1 thanks so much !

Matthieu Vaxelaire

@edouard_uguen1 Thanks Edouard ! Great collaborationg with you !

Vianney de Drouas

Probably the best product in the area right now

Francois de Fitte

@vianney2d 👌💪

Guillaume Marquis

@vianney2d Thanks so much Vianney 🙌 happy to have you onboard!

Nathan Thomassin

That's really useful! I was able to come up with and refine over 20 AI agent prompts in just a few days. Plus, their LLM as a judge feature during the validation phase is fantastic. Definitely worth trying out, if you ask me. Keep it up @Basalt!

Guillaume Marquis

@nathan_thomassin Thank you Nathan for your support! You're definitely a big @Basalt user! It's a pleasure to have you on board 🔥

Valentin Chrétien

Amazing product from an incredible team—happy launch day, and all the best!

(I still remember the late-night demo over a beer, really impressed by the vision and execution)

Guillaume Marquis

@valentinchrt Thanks for your support Valentin! Can't wait to see you again 🔥

Xenia
Launching soon!

Hey Guillaume,

This is awesome! Basalt sounds like a game-changer for AI development. The ability to streamline prompt creation, testing, and deployment in one platform is exactly what teams need. Can't wait to try it out and see how it transforms our workflow. Great work! 🚀

Guillaume Marquis

@xenia1234 Thanks so much Xenia for your support 🪨

Francois de Fitte

@xenia1234 Thanks so much ! Hope you enjoy using Basalt

Victoria Dalleau

Congrats for the launch -- need to try this! 👀

Guillaume Marquis

@victoriadalleau Thank you Victoria! 🙌

Cyril Codron

Basalt helps us at @Prismy monitor the efficiency of our translation prompts—an absolute game changer! Being able to track prompt performance, replay them, and seamlessly publish improvements makes a huge difference. Congrats on the launch! 🚀

Guillaume Marquis

@cyrilcodron We're delighted to help you integrate high-quality AI into your product @Prismy 💪 Thanks for your support Cyril!

Camille Franceschi

Amazing product for PMs !! 🚀

Victor Gross

@camille_franceschi1 thanks Camille for the support ! Please spread across product people !

Faustine Rohr-Lacoste

Pretty amazing what you can do thanks to Basalt! Go go 🔥

Guillaume Marquis

@faustinerl Thank you Faustine for your full support 🙌

Alexis Vilette

Congrats on the launch! 🚀 An incredible team, impressive momentum, and a truly promising product. Excited to see how far you go—wishing you all the success! 🎉

Guillaume Marquis

@alexis_vilette Thank you Alexis for you support on the project 🙌🙌

Quentin Le Gall

The Basalt Copilot is a lifesaver! It helps refine prompts intelligently, suggesting better phrasing and structures to get the best outputs. No more trial and error! I've been building outbound sequences using Basalt connecting it directly to my Data studio thanks to the SDK!


Go team!

Guillaume Marquis

@quentin_le_gall1 The amount of people telling us the time they save with our Copilot is insane! Gogogo Quentin 🔥

Francois de Fitte

Hello AI builders ! Super happy to be a part of this amazing team. Evaluating AI features is tough, but we live and breath by trying to solve this pain point.


What makes Basalt different from other LLM ops tools out there : we consider this to be a team job between product, data and tech teams, instead of a simple dev tool. We think this is the best way our customers can reach for state of the art LLM integrations.


We're launching in San Francisco, get in touch !

Francois and the Basalt team

Guillaume Marquis

@francoisdefitte So proud to work on this with you 💪 Let's go!

Maxime Salomon

Awesome! Love that you can quickly compare multiple model outputs.

Guillaume Marquis

@maximesalomon It's definitely a killer feature Maxime 💪

Nicolas Bressy

Definitely a must-have solution for any company serious about building AI products 🫡

Guillaume Marquis

@nicolas_bressy2 Thank you for your support Nicolas 🙌

Michael Vavilov

Wow! This is so actual! Congratulations on the launch!


Btw, "Terms of service" button does not work.

Victor Gross

@michael_vavilov thx for raising the point ! we will fix the link asap !

Thomas Cochet

Let's go Basalt team!

Guillaume Marquis

@thomascochet Thank you for your support Thomas! 🙌

Edith Christian

Does it offer any built-in ways to detect and adapt to model drift?

Victor Gross

@edith_christian it is doable by tracking the evolution of score over time across prompt versions, yet we will go further in the coming weeks about ensuring quality remains great !

Shivam Singh

This is such a much-needed tool for many product builders out there! The prompt iteration struggle is real, so many teams rely on intuition rather than structured testing, which leads to inconsistent AI performance. Love that Basalt streamlines everything from crafting to deploying AI features with real-world evaluation.


Congrats on the launch!

Best wishes and sending lots of wins to the team :) @guillaume_marquis3

Victor Gross

@guillaume_marquis3 @whatshivamdo Thanks so much Shivam on the support, you nailed our positioning perfectly well !

We are building the second generation of LLM Ops tools, aiming at helping teams achieve feature quality rather than "just" technical monitoring