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 1 to be safe — 1 if everyone is prepared

At level 40, a party of Gothorita's top six counters needs 0.58 trainers (round up: 1), and a mixed lobby of ranks 13-24 needs 0.66 (round up: 1). The raid timer is 180 seconds and one prepared trainer alone would take 1:41. A prepared solo becomes possible at level 20. A duo works from level 20.

Gothorita · Tier 3

psychic

Weak to

bugghostdark

Boss CP: 11,820
Boss HP: 3,600
Raid timer: 180s
Party used: 6

Trainers needed, by attacker level

Scroll sideways for the mixed-lobby column.

Trainers needed to beat Gothorita 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	1(0.62)	1(0.80)	1(0.93)	2:20	3.7
Level 25	1(0.58)	1(0.70)	1(0.80)	2:03	2.8
Level 30	1(0.53)	1(0.63)	1(0.72)	1:51	2.1
Level 35	1(0.52)	1(0.61)	1(0.69)	1:48	1.9
Level 40	1(0.47)	1(0.58)	1(0.66)	1:41	1.7
Level 45	1(0.47)	1(0.56)	1(0.64)	1:39	1.4
Level 50	1(0.45)	1(0.55)	1(0.62)	1:37	1.3

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.

1 trainer at level 40

Necrozma (Dawn Wings)0.47

A prepared party

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

1 trainer at level 40

Necrozma (Dawn Wings)0.47
Blacephalon0.58
Darkrai0.58
Kyurem (Black)0.60
Lunala0.62
Absol0.62

A mixed local group

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

1 trainer at level 40

Eternatus0.64
Gholdengo0.64
Hoopa0.64
Zoroark0.64
Hoopa (Unbound)0.65
Tyranitar0.65

The party these numbers assume

1. Necrozma (Dawn Wings)

Psycho Cut + Moongeist Beam

2. Blacephalon

Astonish + Shadow Ball

3. Darkrai

Snarl + Foul Play

4. Kyurem (Black)

Shadow Claw + Freeze Shock

5. Lunala

Shadow Claw + Shadow Ball

6. Absol

Snarl + Brutal Swing

See the full ranked counter list for Gothorita · 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.