Io — Dota 2 7.41f Counters, Synergies & Win Rate
Also known as: Wisp
Io (Wisp) in Dota 2 7.41f: win rate, pick rate, top counters and best teammates, from Batru's ranked-match pipeline.
Early vs late game: in ranked games that end before 34 minutes, Io's team wins 52.1%; in games of 47+ minutes, 47.3% (−4.7 pp, #100 of 127 by late-game edge; 19% of Io games last 47+ minutes; model estimate). Late & early game heroes →
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Io by rank bracket
Io is strongest in Legend & Ancient games, winning 50.28% (#54 of 127 heroes), but drops to 47.96% (#80) in Herald & Guardian.
| Bracket | Tier Rank | Win Rate | Pick Rate | Matches |
|---|---|---|---|---|
| Herald & Guardian | #80 of 126 | 47.96% | 3.52% | 1,128 |
| Crusader & Archon | #62 of 127 | 49.77% | 3.91% | 5,292 |
| Legend & Ancient | #54 of 127 | 50.28% | 4.13% | 7,235 |
| Divine & Immortal | #71 of 127 | 49.44% | 5.47% | 2,848 |
Recent ranked matches split by average match rank — the same data behind the per-rank tier lists each bracket links to.
Io win rate by patch
Io is winning 49.50% of 1,123,692 ranked matches in patch 7.41f, up 1.1pp from 7.41e.
| Patch | Win Rate | Change | Pick Rate | Matches |
|---|---|---|---|---|
| 7.41f | 49.50% | ▲ +1.1pp | 4.23% | 1,123,692 |
| 7.41e | 48.36% | ▼ -1.4pp | 5.35% | 1,593,265 |
| 7.41d | 49.80% | ▼ -0.3pp | 4.11% | 1,217,944 |
| 7.41c | 50.12% | ▼ -0.9pp | 3.52% | 482,921 |
| 7.41b | 50.97% | ▼ -0.7pp | 3.69% | 519,519 |
| 7.41a | 51.65% | — | 3.54% | 202,401 |
Win rate and pick rate per patch window over all quality-filtered ranked matches; the newest patch accumulates matches for days after release — its row shows the current sample size.
Io counters & matchups
Io the Wisp is a carry-enabling support whose Tether shares regen and speed, Spirits provide damage and control, Overcharge amps attack speed, and Relocate teleports the duo anywhere for a gank or escape. It's strong alongside lanes it can snowball, winning best into immobile heroes its ganks catch like Timbersaw, Nature's Prophet and Chen. Io is countered by sustain-cancel and pickoff: Underlord and Crystal Maiden out-tempo it, while Riki and Dawnbreaker punish its fragile core. Draft tip: Io is a snowball carry-enabler into kill-lane drafts; it's weaker into early aggression that beats it before its carry comes online.
Strong against
 Shadow Demon | 56.68% | 12,674 |
 Nature's Prophet | 55.23% | 51,023 |
 Timbersaw | 55.13% | 30,054 |
 Shadow Fiend | 55.11% | 74,616 |
 Puck | 54.75% | 17,303 |
 Tiny | 54.45% | 27,382 |
 Chen | 54.32% | 4,166 |
 Storm Spirit | 54.26% | 32,373 |
Struggles against
 Troll Warlord | 44.08% | 19,049 |
 Ancient Apparition | 45.64% | 44,192 |
 Sven | 45.88% | 58,330 |
 Legion Commander | 46.00% | 82,376 |
 Vengeful Spirit | 46.16% | 52,462 |
 Outworld Destroyer | 46.16% | 61,311 |
 Crystal Maiden | 46.28% | 74,061 |
 Wraith King | 46.29% | 61,226 |
Io synergies
Io is the ultimate carry-amplifier — Tether's regen and speed plus Relocate ganks let an aggressive core dominate, then teleport home. It pairs best with mobile, dive-happy carries: Spectre global-Haunts off Relocate ganks, while Slark snowballs stat-steal with Tether sustain, and Tidehunter gets Relocated into the perfect Ravage. Give Io a snowball carry and the Tether duo bullies the map from minute one.
Best teammates
 Leshrac | 60.45% | 69,260 |
| Outworld Destroyer | 54.82% | 48,998 |
 Dragon Knight | 53.48% | 61,327 |
| Wraith King | 53.45% | 56,766 |
| Legion Commander | 53.16% | 75,662 |
 Spirit Breaker | 53.02% | 83,317 |
 Slark | 52.39% | 68,265 |
 Night Stalker | 52.36% | 47,859 |
Data updated Nov 10, 2026.