Group size estimator
How many trainers do I need to invite?
Invite 4 to be safe — 4 if everyone is prepared
- Boss CP
- 69,329
- Boss HP
- 25,000
- Raid timer
- 300s
- Party used
- 6
Trainers needed, by attacker level
Scroll sideways for the mixed-lobby column.
| Attacker level | Six of the best counter | A prepared party | A mixed local group | Prepared solo time | Faints per timer |
|---|---|---|---|---|---|
| Level 20 | 4(3.74) | 5(4.98) | 6(5.71) | 22:55 | 6.0 |
| Level 25 | 4(3.39) | 5(4.26) | 5(4.76) | 19:36 | 6.0 |
| Level 30 | 3(2.97) | 4(3.66) | 5(4.18) | 16:50 | 6.0 |
| Level 35 | 3(2.82) | 4(3.45) | 4(3.89) | 15:53 | 6.0 |
| Level 40 | 3(2.70) | 4(3.26) | 4(3.66) | 15:01 | 6.0 |
| Level 45 | 3(2.63) | 4(3.14) | 4(3.51) | 14:27 | 6.0 |
| Level 50 | 3(2.48) | 4(3.02) | 4(3.38) | 13:55 | 6.0 |
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
- Keldeo2.70
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Keldeo2.70
- Kartana3.15
- Zeraora3.35
- Zekrom3.39
- Shaymin (Sky)3.45
- Raikou3.54
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Hisuian Decidueye3.63
- Xurkitree3.51
- Tapu Koko3.55
- Terrakion3.53
- Urshifu (Single Strike)3.65
- Zacian (Crowned Sword)3.66
The party these numbers assume
See the full ranked counter list for Mega Greninja · 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.