Is Keldeo viable in Gen 5 OU?

Keldeo is ranked #6 in Gen 5 OU with 25.68% usage according to Smogon May 2026 - Jul 2026 data.

What beats Keldeo in Gen 5 OU?

Alakazam has the strongest conservative score in this observed May 2026 - Jul 2026 sample. The target was knocked out or switched out in 86.9% of 30.151406872412814 relevant encounters. Standard error is 6.1 points. Sets and switch conditions can change the result.

How are Keldeo matchup checks ranked in Gen 5 OU?

They are ranked by p minus four standard errors. Here, p is the observed fraction of relevant encounters where Keldeo was knocked out or switched out. This is not a set-specific battle guarantee.

Keldeo counters

Gen 5 OU · Sorted by p − 4 standard errors · Smogon source period May 2026 - Jul 2026 · Generated 2026-08-05

#0647 Keldeo

WaterFighting

USAGE 25.7% #6

BASE STATS

HP 91

ATK 72

DEF 90

SPA 129

SPD 90

SPE 108

BST580

TYPE MATCHUPS

2×

ElectricGrassFlyingPsychicFairy

½×

FireWaterIceBugRockDarkSteel

Moves

Secret Sword 99.9% Hydro Pump 71.7% Surf 56.4% Hidden Power Ghost 40.4% Scald 29.8% Hidden Power Ice 24.0% Hidden Power Grass 19.9% Calm Mind 15.6%

Items

Choice Specs 53.0% Leftovers 21.6% Choice Scarf 18.2% Expert Belt 2.8% Salac Berry 2.0% Payapa Berry 1.1% Air Balloon 0.5% Lum Berry 0.2%

Common Teammates

Ferrothorn70.8%

Politoed64.6%

Thundurus-Therian59.3%

Latios43.0%

Tentacruel36.4%

Landorus-Therian36.1%

Tyranitar26.8%

Starmie23.3%

Browse Gen 5 OU teams using Keldeo →

Explore Keldeo + Alakazam teams 62 score Explore Keldeo + Latios teams 47 score Explore Keldeo + Starmie teams 24 score Explore Keldeo + Keldeo teams 9 score Explore Keldeo + Thundurus-Therian teams 4 score Explore Keldeo + Ferrothorn teams 2 score

Leading observed checks

Open a matchup for a separate set-based damage estimate, or browse uploaded teams with both Pokémon.

Team core to explore

Keldeo + Ferrothorn 70.8% teammate usage Explore teams →

Checks & Counters

Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.

How to read this table

Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.

# Checker Encounters Conservative score Target KO or switch rate

Alakazam

Psychic OFFENSIVE CHECK View matchup

30.151

62.4

86.9% Standard error 6.14 points

DAMAGE CALC

252+ SpA Alakazam Psyshock vs. 252 HP / 0 Def Keldeo: 324-384 (83.9 - 99.4%) -- guaranteed 2HKO

View Alakazam counters → Teams with Alakazam →

Latios

DragonPsychic OFFENSIVE CHECK View matchup

167.254

47.3

71.1% Standard error 5.94 points

DAMAGE CALC

252+ SpA Latios Psyshock vs. 252 HP / 0 Def Keldeo: 314-372 (81.3 - 96.3%) -- guaranteed 2HKO

View Latios counters → Teams with Latios →

Starmie

WaterPsychic OFFENSIVE CHECK View matchup

62.089

23.7

58.1% Standard error 8.60 points

DAMAGE CALC

0- SpA Starmie Psychic vs. 252 HP / 252+ SpD Keldeo: 134-162 (34.7 - 41.9%) -- guaranteed 3HKO

View Starmie counters → Teams with Starmie →

Keldeo

WaterFighting SOFT CHECK View matchup

26.652

9.5

48.2% Standard error 9.68 points

DAMAGE CALC

252+ SpA Choice Specs Keldeo Secret Sword vs. 252 HP / 0 Def Keldeo: 249-294 (64.5 - 76.1%) -- guaranteed 2HKO

View Keldeo counters → Teams with Keldeo →

Thundurus-Therian

ElectricFlying SOFT CHECK View matchup

32.707

4.3

38.3% Standard error 8.50 points

DAMAGE CALC

252+ SpA Thundurus-Therian Thunder vs. 252 HP / 252+ SpD Keldeo: 360-426 (93.2 - 110.3%) -- 62.5% chance to OHKO

View Thundurus-Therian counters → Teams with Thundurus-Therian →

Ferrothorn

GrassSteel SOFT CHECK View matchup

42.223

1.6

29.8% Standard error 7.04 points

DAMAGE CALC

252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Keldeo: 378-446 (97.9 - 115.5%) -- 87.5% chance to OHKO

View Ferrothorn counters → Teams with Ferrothorn →

Politoed

Water SOFT CHECK View matchup

20.873

-4.2

38.4% Standard error 10.64 points

DAMAGE CALCRain

252+ SpA Politoed Hidden Power Grass vs. 252 HP / 252+ SpD Keldeo: 102-120 (26.4 - 31%) -- guaranteed 4HKO

View Politoed counters → Teams with Politoed →

Landorus-Therian

GroundFlying SOFT CHECK View matchup

93.165

-6.3

20.2% Standard error 6.63 points

DAMAGE CALC

252+ Atk Landorus-Therian Explosion vs. 252 HP / 0 Def Keldeo: 354-417 (91.7 - 108%) -- 50% chance to OHKO

View Landorus-Therian counters → Teams with Landorus-Therian →

Rotom-Wash

ElectricWater SOFT CHECK View matchup

23.429

-10.4

25.7% Standard error 9.03 points

DAMAGE CALC

252+ SpA Rotom-Wash Volt Switch vs. 252 HP / 252+ SpD Keldeo: 168-200 (43.5 - 51.8%) -- 11.3% chance to 2HKO

View Rotom-Wash counters → Teams with Rotom-Wash →

Jirachi

SteelPsychic SOFT CHECK View matchup

24.973

-10.7

23.1% Standard error 8.43 points

DAMAGE CALC

0- SpA Jirachi Thunder vs. 252 HP / 252+ SpD Keldeo: 120-142 (31 - 36.7%) -- 70.3% chance to 3HKO

View Jirachi counters → Teams with Jirachi →

Excadrill

GroundSteel SOFT CHECK View matchup

21.766

-13.5

22.1% Standard error 8.90 points

DAMAGE CALC

252+ Atk Excadrill Earthquake vs. 252 HP / 0 Def Keldeo: 202-238 (52.3 - 61.6%) -- guaranteed 2HKO

View Excadrill counters → Teams with Excadrill →

Tyranitar

RockDark SOFT CHECK View matchup

24.06

-14.5

11.3% Standard error 6.46 points

DAMAGE CALCSand

252+ Atk Tyranitar Superpower vs. 252 HP / 0 Def Keldeo: 161-190 (41.7 - 49.2%) -- 83.6% chance to 2HKO after sandstorm damage

View Tyranitar counters → Teams with Tyranitar →

Ranked #6 with 25.68% usage. Sorted by conservative score.