Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 43,962
- Boss HP
- 20,000
- 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(4.95) | 6(5.20) | 7(6.01) | 23:55 | 6.0 |
| Level 25 | 5(4.26) | 5(4.61) | 6(5.27) | 21:11 | 6.0 |
| Level 30 | 4(3.65) | 5(4.09) | 5(4.69) | 18:49 | 5.9 |
| Level 35 | 4(3.53) | 4(3.97) | 5(4.43) | 18:17 | 5.9 |
| Level 40 | 4(3.40) | 4(3.65) | 5(4.24) | 16:49 | 5.9 |
| Level 45 | 4(3.31) | 4(3.58) | 5(4.07) | 16:30 | 5.8 |
| Level 50 | 4(3.21) | 4(3.44) | 4(3.92) | 15:50 | 5.8 |
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.
4 trainers at level 40
- Landorus (Therian)3.40
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Landorus (Therian)3.40
- Inteleon3.54
- Groudon3.62
- Kyogre3.71
- Eternatus3.82
- Glimmora3.83
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Excadrill4.05
- Greninja4.07
- Swampert4.16
- Gigalith4.21
- Tyrantrum4.20
- Mamoswine4.21
The party these numbers assume
See the full ranked counter list for Silvally (Fire) · 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.