각청

Mistplitter Reforged
Best in slot in drip and in combat. High base ATK, CRIT DMG and a powerful passive that Keqing can easily trigger.

Kagotsurube Isshin
This sword from Kazuha's story quest is the best true F2P option. Use this if you can't afford to get The Black Sword or Lion's Roar.

Primordial Jade Cutter, Haran Geppaku Futsu, Summit Shaper, Light of Foliar Incision
5-star options that all rank very closely in terms of Keqing's damage output. Summit Shaper is the worst of the lot and requires a shield to make full use of, but is still better than 4-star options even if you don't have a shield.

Aquila Favonia, The Black Sword, Lion's Roar
Aquila is only an option because of its 5-star statline, but it is noticeably worse than all other 5-stars. The Black Sword is the go-to in this bracket if you can get it as it has a high CRIT Rate substat and a decent passive. Lion's Roar can be better (and is generally stronger with refines) if you can maintain full uptime on its passive, although it does not fall off too much even without full uptime unless you constantly remove Electro from the enemy.

<sands> ATK%
<goblet> Electro DMG Bonus
<circlet> CRIT Rate or CRIT DMG

CRIT Rate
CRIT DMG
ATK%

1) Elemental Burst: Starward Sword
2) Normal Attack: Yunlai Swordsmanship
3) Elemental Skill: Stellar Restoration

This is a non-Aggravate, only Electro team.

Aquila Favonia, Primordial Jade Cutter
Both of these options rank closely as the best in slot for Physical Keqing, although Primordial Jade Cutter pulls ahead significantly with external ATK buffers such as Bennett or Sara due to its massive CRIT Rate substat.

Summit Shaper, Haran Geppaku Futsu, Mistsplitter Reforged
Ordered in terms of potency, these 5-star options are all decent choices for Physical Keqing. Mistsplitter Reforged is the worst of the three because this build does not take advantage of its Elemental DMG bonuses; Summit Shaper without a shield is also slightly worse than Haran Geppaku Futsu.

The Black Sword, Prototype Rancour
The Black Sword is generally better if you can afford it. Prototype Rancour, the free option, is not too far behind and can improve very slightly with refinements, but it is not recommended to use your billets in that manner.

<sands> ATK%
<goblet> Physical DMG Bonus
<circlet> CRIT Rate / CRIT DMG

CRIT Rate
CRIT DMG
ATK%

1) Normal Attack: Yunlai Swordsmanship
2) Elemental Burst: Starward Sword
3) Elemental Skill: Stellar Restoration

Physical DPS Keqing is a niche build that does not scale well in the late game. Generally speaking, it is easy to build for the early game and has very few requirements other than a Cryo teammate to trigger Superconduct, but it is generally recommended to avoid investing too much in this build as physical damage is very limited as a damage type.

Primordial Jade Cutter, Mistsplitter Reforged, Light of Foliar Incision
General statstick with everything she needs and a fully usable passive.
Lions Roar
Great 4 star option
Iron Sting
Best Craftable option available
Harbinger of Dawn
If maintained, beats all 4 star options and loses to only the above three 5 star options.

Freedom Sworn, Summit Shaper, Haran Geppaku Futsu
Other functional 5 star statsticks

The Black Sword, Wolf Fang
Great option too, but both battle pass weapons

<sands> ATK% or Elemental Mastery
<goblet> Electro DMG Bonus%
<circlet>CRIT DMG or CRIT Rate

Energy Recharge
Elemental Mastery
CRIT DMG
CRIT Rate

1) Normal Attack: Yunlai Swordsmanship
2) Elemental Burst: Starward Sword
2) Elemental Skill: Stellar Restoration