Romain Mazeries

Co-Founder & CEO of Weflayr
(Former CEO of Mangopay)

[Romain Mazeries @rmazeries]

Pitching @weflayr at @github HQ ! Great opportunity 🙏 F/AI

[Noé Achache @noe_achache]

@weflayr is now generally available! 🎉

You shouldn't have to trade quality for cost for your LLM calls. That's exactly why we built Benchmark-Driven Routing: a new approach to optimising the quality and cost for your AI applications.

Most LLM routers use generic classifiers that don't reflect how models perform on your workload. Weflayr benchmarks models against your workload and learns when to use each one for every new request. This gives you both the auditability and quality other routers are missing.

Results across our two optimisation modes: Best Quality scores +20 quality points at 71% lower cost than Opus 5.5, and Same Quality scores +5 points at 89% lower cost.
Against OpenRouter's best router (Auto Router, xhigh), they score +22 and +7 points respectively, at 25% and 72% lower cost.

The full article: https://t.co/TlTaihEB1h

[Romain Mazeries @rmazeries]

🚀 Weflayr is officially open to everyone!

=>You shouldn't have to trade quality for cost.
That's the conviction behind Weflayr, and today we're sharing the research that backs it up.

We tested our Benchmark-Driven Router against leading LLM routers on quality and cost.

The results, compared to Claude Opus 5.5 with two optimization strategies :

📈 Looking for Best quality: +20 quality points at 71% lower cost.
📉 Looking for Same quality, at 89% lower cost.

And we outperformed leading LLM routers on both quality and cost.
Our approach is simple: benchmark models on your own workloads, then route every request based on proven performance.

Huge shoutout to Louis Manhès and @noe_achache for the incredible work behind this research and the article that lays out our founding thesis! 🙌

Read our research and methodology 👇
https://t.co/X0HRwPTkUl

https://t.co/31mM7Xs209 is live ! Give it a try

[Romain Mazeries @rmazeries]

@lionel_mora Congrats team !

[Emmanuel Ruimy @EmmanuelRuimy]

C’est dur à croire, mais le monde va mieux, vraiment.

Malgré les idées reçues, vous vivez dans l'ère la plus prospère et la plus pacifique de toute l'histoire humaine.

Un #thread et quelques graphiques sur l'immense progrès parcouru, bien que le chemin reste encore long.🧶⬇️

[Romain Mazeries @rmazeries]

New logo, new look, stronger identity! 🚀
I am thrilled to unveil our new brand identity, complete with a fresh logo and website, that reflects the growth and ambitions of our company.
GO Mangopay !
https://t.co/Iu7skyqsdU

[Romain Mazeries @rmazeries]

@royaltiz_off @vinijr Go @royaltiz_off !!! 💪

[royaltiz_official @royaltiz_off]

We’re delighted to announce a 10-year partnership with one of the best football players in the world: @vinijr

Royaltiz community will be able to invest in the career of @vinijr early next year.
#WorldCup2022 #Vinicius

[Romain Mazeries @rmazeries]

@cedric_o @esa @AschbacherJosef @CNES Passionnant !

[Romain Mazeries @rmazeries]

@royaltiz_off Oh yes 👏👏

[Romain Mazeries @rmazeries]

OMG ! Je viens de faire 1 points à #RiskyRoad ! Essaie de me battre ! https://t.co/ywX0HyQonI

[Romain Mazeries @rmazeries]

@royaltiz_off Congrats 👏

[Romain Mazeries @rmazeries]

@mangopay @LukeTrayfoot 👊

[Romain Mazeries @rmazeries]

So excited to share this big news with you today
A huge thank you to all our clients for their trust in our products and their belief in our vision, some from day 1. @adventintl @mangopay #fintech
Read our blog post to know more 👇
https://t.co/N3YSIQQB6K

[Ensemble Ukraine @EnsembleUkraine]

L’APPEL DE LA FRENCH TECH AU SECOURS DES UKRAINIENS ❤️
Plus de 50 entreprises ont déjà répondu à cet appel. Aujourd'hui Les Echos nous offre une Tribune pour porter plus haut notre voix, pour inviter toutes les autres entreprises à rejoindre le mouvement.
https://t.co/tr5oi8SR1e

[Romain Mazeries @rmazeries]

@farah_chabchoub @Ankorstore Congrats @farah_chabchoub and congrats @Ankorstore

[Romain Mazeries @rmazeries]

@patamiel 🙏🏻

[Philippe Corrot @pcorrot]

Pas de doute, la marketplace est le business model de demain. Merci au @JDD d’avoir mis en avant quelques-uns de nos récents succès.

https://t.co/vr0HcfMRny

[Romain Mazeries @rmazeries]

Bravo @oliviermathiot @bibicheri 💪

[olivier mathiot @oliviermathiot]

Pour toutes celles et ceux qui s’interrogent sur l’avenir : les réponses dans ce super #podcast @FinscalePodcast qui explique et décortique notre nouveau fonds d’investissement @2050do ! Merci @sniedercorn et très fier d’être associé à Marie Ekeland @bibicheri feedbacks Welcome