Gaetan Semet

1.7K posts

Gaetan Semet

@gsemetfr

Senior SW Engineer & AI practitioner • Agentic coding, Python, scaling IA • Real Insights and personal experiences • FR/EN

Toulouse, France Katılım Ekim 2014

164 Takip Edilen57 Takipçiler

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Gaetan Semet@gsemetfr·3 Tem

I compiled a very high level "ROI-maxing" Technology Radar, with a clear map of techinics, tools to use when using coding agent like Copilot, Claude Code, or any other. It is tainted for #githubcopilot, but most of the green tech can be applied by anyone

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Gaetan Semet@gsemetfr·18m

@melvynx Appart from design (not used for that), Luna is way better that Terra. Terra stops mid-flight, or use bad tools. just design with a big model, and code with luna.

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Melvyn • Builder@melvynx·4h

After a lot of tests: NO, Luna is nice ON THE benchmark but an absolute shit in terms of design experience Looks like GPT 5.5 basically And at the end, Luna xhigh is MORE expensive than GPT 5.6 Sol medium So, completely useless model

Haider.@haider1

GPT-5.6 Luna is a standout model for price-to-performance at half the cost, "5.6 luna max" matches gpt-5.5 xhigh, while outperforming "fable 5 md" at half the cost -- so together, "luna" and "sol" dominate the Pareto frontier i'm still unsure when to use "terra"

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Gaetan Semet@gsemetfr·4h

@c_charpilienne Et intéressant, nos amis espagnols arrivent (par choix? nécessité) à calibrer leur consommation et production avec le dome solaire. Bcp de gaz quand même. mais c'est vrai que la france est le mauvais élève d'europe...

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Gaetan Semet@gsemetfr·4h

@c_charpilienne Allez, en bonus, nos amis polonais...

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Charpilienne Christophe@c_charpilienne·23h

Mme Le Pen veut interdire les énergies renouvelables et en même temps climatiser la France avec le seul nucléaire. On a besoin de Clim durant une canicule mais le nucléaire ne fonctionne plus lors des épisodes de fortes chaleurs. La candidate condamnée porte un projet populiste et dangereux. Canicule : trois réacteurs nucléaires à l'arrêt et huit à puissance réduite en France, indique EDF lefigaro.fr/societes/canic…

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Gaetan Semet@gsemetfr·4h

@pbeyssac Hi, il manque les importations parce qu’à un moment dans la journée ils n’ont pas assez d’électricité

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Pierre Beyssac 🏴‍☠️🇫🇷🇪🇺🇺🇦@pbeyssac·1d

Des nouvelles d'Energiewende et de la "sortie du fossile" en Allemagne : 2,5 GW de production charbon + 1,4 GW de production gaz à l'instant même en Allemagne, pour une électricité >4x plus carbonée qu'en France.

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Gaetan Semet@gsemetfr·4h

@stevekrouse Change specification are ephemeral, they are trashed (archived) after dev. What may be valuable are living requirements, anchored to the code. But the code is the ultimate source of truth

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Steve Krouse@stevekrouse·20h

the problem with "spec driven development" is that most software can't be spec'd up front software is a creative act, where you figure out what you're building as you build it you need to get your hands dirty in the details, and react to incremental versions it's telling that all the examples of spec driven development are sorting a list or porting thoroughly tested code (like a js runtime or browser engine), which are the exception, not the rule. the vast majority of software doesn't have a spec – or if it does, the spec was created *after*

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Gaetan Semet@gsemetfr·4h

@Ortofon76 @sophie_bussiere Une grosse paille quand même !

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Ortofon@Ortofon76·5h

@sophie_bussiere Bien en contraire, parlons en ! Nous disposons de 57 réacteurs en France, ça reste une paille et nous devrions nous féliciter de cette résilience 👌 Il est donc urgent d’accélérer dans la construction de nouveaux réacteurs !!

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Sophie Bussiere 🌻@sophie_bussiere·20h

☢️ Chut, il ne faut pas en parler. #nucléaire #canicule #climat #écologie

franceinfo@franceinfo

Trois réacteurs nucléaires à l'arrêt et sept à puissance réduite en France à cause de la chaleur l.franceinfo.fr/rGa

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Gaetan Semet@gsemetfr·4h

Marrant mais cette ecolo cherchait juste du clickbait, ces donnés que tu partages sont pas du tout dans sa narrative et donc elle ne debattera pas avec toi. Et demain elle va continuer de citer l’Allemagne comme exemple à suivre, Allemagne qui s’éclaire le soir grâce à nos centrales nucléaires qui tournent la nuit, elles.

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N. 57@Nicolas60515208·5h

@sophie_bussiere Oui parlons en

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Gaetan Semet@gsemetfr·4h

@sophie_bussiere Quel est le problème ? On est largement en surproduction, on peut donc éteindre les centrales qui ont le plus d’impact. On parle de la production éolienne en ce moment ?

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Gaetan Semet@gsemetfr·6h

@MsShannon112 @uyintans @ziv_ravid AGI is bullshit and everybody who use models know it.

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Man@MsShannon112·10h

@uyintans @ziv_ravid It's very obvious they are all in on RSI/AGI. My guess is they think working on these smaller models is taking away from that mission.

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Ravid Shwartz Ziv@ziv_ravid·20h

I wonder whether, in retrospect, Anthropic thinks it made a mistake in developing such a large model. It made more sense in February, when there was no model near its performance level, but now, their only option is to keep subsidizing it through the paid plan

Claude@claudeai

We're extending Claude Fable 5 access on all paid plans, as well as keeping Claude Code’s weekly rate limits 50% higher, through July 19.

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Gaetan Semet@gsemetfr·6h

@uyintans @ziv_ravid you mean ...by letting Haiku rot. You have Sonnet 5 (useless and too expensive). But cheaper Haiku is really missing. #releasehaiku5

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DanT@uyintans·18h

I don’t think it was a mistake, but it was a mistake to focus all of their energy on something so expensive while letting Opus and Sonnet rot. Everyone at Anthropic seems to just use Mythos all of the time without any clue how much it costs outside of there They need this price war

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Gaetan Semet@gsemetfr·6h

@ziv_ravid They get blured by the light. People are NOT loyal to a model, if a cheaper and faster model comes out overnight they will switch. I do not use any Anthropic model because i find better ROI elsewhere. #releasehaiku5

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Gaetan Semet@gsemetfr·6h

🛡️ Guardrails skills 👉 x.com/gsemetfr/statu…

Gaetan Semet@gsemetfr

Last of the series about Skill type: "Guardrails". They are my own category, and I will explain why in this 🧵

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Gaetan Semet@gsemetfr·6h

🏗️ Workflow skills 👉 x.com/gsemetfr/statu…

Gaetan Semet@gsemetfr

Let's now talk about Workflow Skill. What they are, how to name and how to test them. This is part 2 out of 3 about Agent Skills type. A 🧵

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Gaetan Semet@gsemetfr·6h

I documented in length the 3 types of skills illustrated in this post. How to name them, how to articulate them, how to eval them. - 📚 Knowledge skills: load information about a tool or a process - 🏗️ Workflow skills: achieve a result - 🛡️Guardrail skills: rules to comply

Gaetan Semet@gsemetfr

There are 3 types of agent skills: - knowledge: teach something to your agent - workflow: acheive a specific end result - guardrails: boundaries agent shall never cross.

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Gaetan Semet@gsemetfr·6h

So, do you agree with these skills being special enough to split them from Knowledge skills?

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Gaetan Semet@gsemetfr·6h

These "enforced_by" frontmatter is just informational, but it helps linking them with the structural check. This also works with ADR, when important ADR. But I usually write a separated guidelines to guide the agent with what the ADR now requires to follow. (ADR = why, pro/con,... too many information for the context)

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Gaetan Semet@gsemetfr·6h

Last of the series about Skill type: "Guardrails". They are my own category, and I will explain why in this 🧵

Gaetan Semet@gsemetfr

There are 3 types of agent skills: - knowledge: teach something to your agent - workflow: acheive a specific end result - guardrails: boundaries agent shall never cross.

English

Keşfet

@melvynx @c_charpilienne @pbeyssac @stevekrouse @Ortofon76 @sophie_bussiere @MsShannon112 @uyintans