Group size estimator
How many trainers do I need to invite?
Invite 5 to be safe — 4 if everyone is prepared
- Boss CP
- 59,342
- Boss HP
- 22,500
- 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(4.91) | 7(6.19) | 7(6.88) | 28:46 | 6.0 |
| Level 25 | 5(4.07) | 5(4.89) | 6(5.65) | 22:43 | 5.9 |
| Level 30 | 4(3.70) | 5(4.33) | 6(5.01) | 20:07 | 5.9 |
| Level 35 | 4(3.53) | 5(4.13) | 5(4.77) | 19:13 | 5.9 |
| Level 40 | 4(3.17) | 4(3.89) | 5(4.57) | 18:05 | 5.9 |
| Level 45 | 4(3.15) | 4(3.78) | 5(4.44) | 17:33 | 5.9 |
| Level 50 | 4(3.10) | 4(3.60) | 5(4.27) | 16:44 | 5.9 |
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.
4 trainers at level 40
- Necrozma (Dawn Wings)3.17
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Necrozma (Dawn Wings)3.17
- Zeraora3.95
- Regieleki3.99
- Kartana3.96
- Xurkitree4.10
- Thundurus (Therian)4.17
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
5 trainers at level 40
- Lunala4.40
- Giratina (Origin)4.46
- Eternatus4.50
- Tyranitar4.49
- Hydreigon4.54
- Rillaboom4.56
The party these numbers assume
See the full ranked counter list for Mega Slowbro · 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.