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 3 to be safe — 3 if everyone is prepared

At level 40, a party of Oranguru's top six counters needs 2.22 trainers (round up: 3), and a mixed lobby of ranks 13-24 needs 2.52 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 10:14. No level in this range makes it soloable with a prepared party.

Oranguru · Tier 5

normalpsychic

Weak to

bugdark

Boss CP: 32,246
Boss HP: 15,000
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	3(2.87)	4(3.11)	4(3.55)	14:18	6.0
Level 25	3(2.53)	3(2.68)	4(3.06)	12:21	5.9
Level 30	3(2.23)	3(2.46)	3(2.79)	11:19	5.6
Level 35	3(2.16)	3(2.34)	3(2.63)	10:47	5.5
Level 40	3(2.05)	3(2.22)	3(2.52)	10:14	5.2
Level 45	3(2.01)	3(2.16)	3(2.44)	9:57	5.0
Level 50	2(1.92)	3(2.09)	3(2.37)	9:37	4.8

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.

3 trainers at level 40

Darkrai2.05

A prepared party

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

3 trainers at level 40

Darkrai2.05
Hydreigon2.22
Zacian (Crowned Sword)2.26
Tyranitar2.25
Absol2.27
Eternatus2.30

A mixed local group

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

3 trainers at level 40

Volcarona2.44
Kartana2.45
Incineroar2.45
Yveltal2.48
Urshifu (Single Strike)2.48
Vikavolt2.53

The party these numbers assume

1. Darkrai

Snarl + Foul Play

2. Hydreigon

Bite + Brutal Swing

3. Zacian (Crowned Sword)

Metal Claw + Behemoth Blade

4. Tyranitar

Bite + Brutal Swing

5. Absol

Snarl + Brutal Swing

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.