Group size estimator
How many trainers do I need to invite?
Invite 4 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(4.38) | 5(4.52) | 6(5.62) | 20:48 | 6.0 |
| Level 25 | 4(3.79) | 4(3.89) | 5(4.73) | 17:54 | 6.0 |
| Level 30 | 4(3.21) | 4(3.43) | 5(4.22) | 15:46 | 5.9 |
| Level 35 | 4(3.06) | 4(3.26) | 5(4.05) | 15:01 | 5.9 |
| Level 40 | 3(2.89) | 4(3.13) | 4(3.84) | 14:23 | 5.9 |
| Level 45 | 3(2.80) | 3(2.98) | 4(3.72) | 13:42 | 5.8 |
| Level 50 | 3(2.70) | 3(2.90) | 4(3.59) | 13:20 | 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
- Blacephalon2.89
A prepared party
Each trainer brings the boss's top six counters, powered up and correctly TM'd.
4 trainers at level 40
- Blacephalon2.89
- Kyurem (White)2.96
- Rayquaza3.15
- Eternatus3.17
- Kyurem (Black)3.22
- Reshiram3.37
A mixed local group
Ranks 13-24: reasonable but unoptimised parties, which is what a public lobby usually is.
4 trainers at level 40
- Chandelure3.73
- Galarian Articuno3.78
- Volcarona3.80
- Naganadel3.83
- Zamazenta (Crowned Shield)3.83
- Nihilego3.84
The party these numbers assume
See the full ranked counter list for Silvally (Grass) · 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.