Group size estimator

How many trainers do I need to invite?

The Estimator is already "trainers of this attacker needed to finish inside the timer", so this page does not invent a number: it reads it off the boss's own ranked counter list for three realistic parties and re-simulates each of them at every level from 20 to 50.

Raid bossTierIVsWeatherFriendshipDodgingShadow attackersMega attackersLegendary attackers

Invite 5 to be safe — 4 if everyone is prepared

At level 40, a party of Oranguru's top six counters needs 3.76 trainers (round up: 4), and a mixed lobby of ranks 13-24 needs 4.20 (round up: 5). The raid timer is 300 seconds and one prepared trainer alone would take 17:17. No level in this range makes it soloable with a prepared party.

Oranguru · Elite

normalpsychic

Weak to

bugdark

Boss CP: 37,234
Boss HP: 20,000
Raid timer: 300s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Oranguru at each attacker level
Attacker level	Six of the best counter	A prepared party	A mixed local group	Prepared solo time	Faints per timer
Level 20	5(4.72)	6(5.34)	7(6.12)	24:34	6.0
Level 25	5(4.18)	5(4.53)	6(5.22)	20:51	6.0
Level 30	4(3.75)	5(4.14)	5(4.66)	19:03	5.9
Level 35	4(3.62)	5(4.01)	5(4.39)	18:26	5.8
Level 40	4(3.42)	4(3.76)	5(4.20)	17:17	5.6
Level 45	4(3.34)	4(3.59)	5(4.03)	16:30	5.5
Level 50	4(3.18)	4(3.48)	4(3.91)	16:01	5.5

Whole trainers in bold, the raw estimator in brackets — 2.04 means two trainers is right on the line and three is comfortable.

Six of the best counter

Every trainer brings six copies of the single best counter — the theoretical floor.

4 trainers at level 40

Darkrai3.42

A prepared party

Each trainer brings the boss's top six counters, powered up and correctly TM'd.

4 trainers at level 40

Darkrai3.42
Hydreigon3.59
Absol3.80
Tyranitar3.84
Necrozma (Dusk Mane)3.95
Eternatus3.94

A mixed local group

Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.

5 trainers at level 40

Weavile4.03
Kartana4.06
Zoroark4.07
Kyurem (Black)4.13
Vikavolt4.17
Salamence4.17

The party these numbers assume

1. Darkrai

Snarl + Foul Play

2. Hydreigon

Bite + Brutal Swing

3. Absol

Snarl + Brutal Swing

4. Tyranitar

Bite + Brutal Swing

5. Necrozma (Dusk Mane)

Metal Claw + Sunsteel Strike

6. Eternatus

Poison Jab + Dynamax Cannon

See the full ranked counter list for Oranguru · check a real lobby (win chance, who brings what) · make a share card of the top six

How this is worked out

The boss is ranked once at level 40 with rankCached (the same memoised call /raids makes), then the three bands — rank 1, ranks 1-6, ranks 13-24 — are re-simulated at each attacker level with an 8-run Monte Carlo each. Holding the party fixed and moving only its level is deliberate: it answers "what if my party were level 20" rather than "what would a level-20 player's completely different party be", and it is about ten times cheaper than re-ranking every attacker seven times. The Estimator itself is Pokebattler's definition, time to win including rejoin time divided by the raid timer.