Group size estimator
How many trainers do I need to invite?
Invite 3 to be safe — 2 if everyone is prepared
- Boss CP
- 21,078
- Boss HP
- 15,000
- 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 | 3(2.08) | 3(2.39) | 3(2.98) | 11:01 | 5.9 |
| Level 25 | 2(1.76) | 3(2.08) | 3(2.59) | 9:33 | 5.7 |
| Level 30 | 2(1.63) | 2(1.88) | 3(2.29) | 8:40 | 5.5 |
| Level 35 | 2(1.50) | 2(1.79) | 3(2.20) | 8:13 | 5.3 |
| Level 40 | 2(1.46) | 2(1.71) | 3(2.11) | 7:53 | 5.3 |
| Level 45 | 2(1.42) | 2(1.66) | 3(2.03) | 7:37 | 5.1 |
| Level 50 | 2(1.38) | 2(1.60) | 2(1.96) | 7:21 | 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
- Keldeo1.46
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
2 trainers at level 40
- Keldeo1.46
- Lucario1.61
- Terrakion1.70
- Blaziken1.78
- Kartana1.83
- Zacian (Crowned Sword)1.91
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
3 trainers at level 40
- Zamazenta (Crowned Shield)2.05
- Marshadow2.06
- Mewtwo2.05
- Gallade2.07
- Kyurem (Black)2.10
- Raikou2.12
The party these numbers assume
See the full ranked counter list for Audino · 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.