Arknights Pity Calculator · Pull Planner
Real odds on the featured 6★ — pulls for 50%, for 90%, and the expected spend
57 typical, 142 if unlucky, 69 on average — never guaranteed. Plotted on the same axis as every other game, measuring standard headhunting with ONE rate-up 6★ — our rates carry the ramp for standard banners, and a banner sharing its rate-up between two 6★ operators takes more pulls to a named one than this row shows.
Arknights Headhunting: 2% base 6★, with the soft-pity ramp (from pull 51, +2%/pull) reaching a guaranteed 6★ at pull 99. These figures assume a standard banner with a single rate-up 6★, who is then half of every 6★ you pull; a banner that rate-ups two operators splits that half. Our data lists other banner types (Limited, Special / Joint, Anniversary (Kernel), Anniversary (Classic), Double-up, Single-op) whose featured odds and any exchange ceiling we do not carry, so they are not modelled here.
The base rate and the pity count are the figures the game itself states. The shape of the soft-pity ramp between them is this planner's model, calibrated to reproduce the stated odds — treat the exact per-pull curve inside the ramp as an estimate, and the totals it produces as the game's own numbers. Checked against Arknights 26-08-17-16-42-26_e34be5 on 2026-08-24. This page measures standard headhunting with ONE rate-up 6★ — our rates carry the ramp for standard banners, and a banner sharing its rate-up between two 6★ operators takes more pulls to a named one than this row shows.
New to these terms? Pity, soft pity, 50/50 and spark, explained.
Starting from zero pity — the actual numbers
If you open the banner with no pity carried over, this is what a featured 6★ costs. The planner above adjusts these for the pity you already have.
| Outcome | Pulls | Orundum |
|---|---|---|
| 50% chance | 57 | 34,200 |
| 90% chance | 142 | 85,200 |
| Expected (average) | 69 | 41,513 |
| Guaranteed by | No guarantee | — |
Base rate 2.0% per pull, with the soft-pity ramp beginning at pull 51 and a hard guarantee at pull 99. “Expected” is the mean across the full distribution, not the median — half of players get there sooner than the 50% row, and a long tail does not.