Who is weakest akatsuki ??

[Arcanor]

Well if we consider 10.000+ clones with mokuton in Zetsu's arsenal, then the weakest is Hidan. If we only count the original black and white zetsu then probably he is the weakest.
Konan and Sasori are levels above that. We haven't seen Sasori losing a fair and square 1v1 battle, both his battles we handicapping and Plot-no-jutsuing him. Konan forced Obito to use Izanagi. Obito without Izanagi is still a top6 character, and he wasn't really planning to use it from the start, so we can say that Konan actually beat a non-Izanagi Obito.No where near weak.

 

[Naruto D Luffy]

sasori is weakest

 

[S A G E]

She is not very perceptive of her opponents and her attacks lacks strategy.
All she got is strong punch and kick for offense. No elemental release what so ever.

Sakura would have died in the first five second if Chiyo isn't with her. The old lady did most of the job and saved Sakura's life many times. Chiyo even noted before the fight that Sakura lacks battle experience so she volunteered to be controlled like a puppet.

Don't overestimate Sakura, she is top 30 at best.

Also the reason why Sasori lost to sai is because he doesn't have his puppets with him.

 

[Zexion~]

Actually i rank sasori as the weakest of the 2nd tier of akatsuki(kakuzu,kisame,deidara,sasori) so technically if he picked four sasori would be the one on there ...But anyways its zetsu

 

[Saad Shujaat]

Zetsu cause 100000000000 Zetsuu got stomped by mere ningas in war Sasori puppets ae death machines Zetsu will get stomped

 

[WhistleBlower]

Defs Zetsu. Any strong jounin could take him

 

[Vegeto30294]

Sasori

Sasori was capable of taking down both Chiyo and Sakura back then. It was only the fact that Sakura had preparation time that she even survived.

It was only because of Chiyo that Sakura managed to dodge Hiruko in the first place.

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And the Third Kazekage

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Twice

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But like you said, this is a tag team match, so they're allowed to help each other. But let's see the ways Sasori could have ended this battle with or without each other's help.

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With his variety of attacks, and with every single scratch he can inflict on you being instantly fatal due to poision, Sasori is far from a weak ninja.

Konan

Konan had the privilage to fight Jiraiya in her debut appearance, who himself gave even Pain a bit of trouble.

As a ninja, her best elements are stealth and espionage. She's capable to use her paper to hide herself, and turn them into butterflies or birds to gather information.

As for combat, she managed to tear off Tobi's arm

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and then this

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which explains itself.


Hidan

Given the element of surprise, Hidan could possibly devastate any one person in the manga. The only way you could take him down is by explosives or cutting off his limbs. His attacks may be predictable, but with one scratch, Hidan is basically a watered down Sasori who uses the grim reaper instead of poison.

 

[Rinnegan No Obito]

Sasori was severely handicapped as an edo....He's one of the strongest akatsuki members

Idk why you even have konan there, she's definitely not the weakest

Zetsu is obviously the weakest, followed by hidan, although it can be argued that zetsu is stronger :|

Hidan bar none. Feat wise, tech wise, he just doesn't cut the mustard. I don't even put zetsu into any category since his primary role is simply as a spy.