Group size estimator
How many trainers do I need to invite?
Invite 1 to be safe — 1 if everyone is prepared
- Boss CP
- 15,911
- 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 | 1(0.85) | 1(0.90) | 2(1.14) | 4:08 | 5.9 |
| Level 25 | 1(0.74) | 1(0.78) | 1(0.99) | 3:36 | 5.5 |
| Level 30 | 1(0.66) | 1(0.69) | 1(0.89) | 3:12 | 4.6 |
| Level 35 | 1(0.63) | 1(0.66) | 1(0.85) | 3:03 | 4.1 |
| Level 40 | 1(0.59) | 1(0.63) | 1(0.81) | 2:55 | 3.6 |
| Level 45 | 1(0.57) | 1(0.61) | 1(0.78) | 2:49 | 3.3 |
| Level 50 | 1(0.56) | 1(0.60) | 1(0.75) | 2:44 | 3.0 |
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.
1 trainer at level 40
- Inteleon0.59
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
1 trainer at level 40
- Inteleon0.59
- Kyogre0.62
- Greninja0.63
- Quaquaval0.64
- Kingler0.65
- Primarina0.67
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
1 trainer at level 40
- Feraligatr0.75
- Volcanion0.75
- Gyarados0.75
- Golisopod0.75
- Crabominable0.79
- Sharpedo0.80
The party these numbers assume
See the full ranked counter list for Numel · 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.