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 — 2 if everyone is prepared

At level 40, a party of Venipede's top six counters needs 1.70 trainers (round up: 2), and a mixed lobby of ranks 13-24 needs 2.01 (round up: 3). The raid timer is 300 seconds and one prepared trainer alone would take 7:48. No level in this range makes it soloable with a prepared party. A duo works from level 30.

Venipede · Elite

bugpoison

Weak to

flyingrockfirepsychic

Boss CP: 14,797
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 Venipede 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(2.15)	3(2.39)	3(2.82)	11:00	6.0
Level 25	2(1.83)	3(2.07)	3(2.46)	9:31	5.7
Level 30	2(1.63)	2(1.87)	3(2.19)	8:35	5.5
Level 35	2(1.56)	2(1.78)	3(2.09)	8:13	5.4
Level 40	2(1.49)	2(1.70)	3(2.01)	7:48	5.2
Level 45	2(1.44)	2(1.63)	2(1.94)	7:30	5.0
Level 50	2(1.38)	2(1.58)	2(1.88)	7:16	4.9

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.

2 trainers at level 40

Blacephalon1.49

A prepared party

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

2 trainers at level 40

Blacephalon1.49
Rayquaza1.63
Mewtwo1.67
Reshiram1.74
Hoopa (Unbound)1.82
Salamence1.82

A mixed local group

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

3 trainers at level 40

Cinderace1.96
Toucannon1.95
Enamorus (Incarnate)1.97
Heatran2.00
Volcarona2.02
Zacian (Crowned Sword)2.02

The party these numbers assume

1. Blacephalon

Incinerate + Mind Blown

2. Rayquaza

Air Slash + Dragon Ascent

3. Mewtwo

Confusion + Psystrike

4. Reshiram

Fire Fang + Fusion Flare

5. Hoopa (Unbound)

Confusion + Psychic

6. Salamence

Fire Fang + Fly

See the full ranked counter list for Venipede · 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.