Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 57,200
- 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 | 5(4.20) | 5(4.82) | 8(7.23) | 22:10 | 6.0 |
| Level 25 | 4(3.37) | 5(4.01) | 6(5.84) | 18:26 | 5.9 |
| Level 30 | 4(3.19) | 4(3.65) | 6(5.12) | 16:47 | 5.9 |
| Level 35 | 3(2.92) | 4(3.48) | 5(4.85) | 16:00 | 5.9 |
| Level 40 | 3(2.80) | 4(3.29) | 5(4.65) | 15:09 | 5.8 |
| Level 45 | 3(2.74) | 4(3.19) | 5(4.49) | 14:41 | 5.8 |
| Level 50 | 3(2.58) | 4(3.08) | 5(4.30) | 14:09 | 5.7 |
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
- Zacian (Crowned Sword)2.80
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Zacian (Crowned Sword)2.80
- Zamazenta (Crowned Shield)2.84
- Necrozma (Dusk Mane)2.89
- Kyurem (White)3.39
- Eternatus3.88
- Metagross3.94
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Kyurem4.43
- Naganadel4.41
- Tapu Lele4.51
- Enamorus (Incarnate)4.54
- Tapu Koko4.58
- Lucario4.69
The party these numbers assume
See the full ranked counter list for Mega Altaria · 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.