Viper vs KAY/O matchup in Valorant
Win Rate
66.7%
Matches
6
Avg KDA
1.50
Avg ADR
146

Viper vs KAY/OMatchup

Controller
Patch12.01
Matches82,189
RegionAll Regions
RankAll Ranks
PlatformAll Platforms
ModeCompetitive
Last UpdatedFeb 3, 2026
MethodologyData Methodology

Viper vs KAY/O matchup breakdown: Viper dominates with a 66.7% win rate across 6 matches. Superior fragging (1.50 KDA) gives Viper a clear edge. See attack/defense stats and combat analysis.

Viper Matchup Breakdown

Select an opposing agent to view detailed head-to-head statistics. Compare Viper's performance in terms of win rate, KDA, damage output, headshot percentage, and attack/defense effectiveness — all based on real competitive Valorant match data.

Compare against an opponent
KAY/O - 66.7% win rateKAY/O(66.7%)
Viper - 66.7% win rate in this matchup
Viper
66.7% WR
VS
KAY/O vs Viper matchup - 33.3% win rate
KAY/O
33.3% WR

Who Wins the Viper vs KAY/O Matchup?

Viper wins the Viper vs KAY/O matchup
Winner
Viper
Matches: 6
66.7%
Win Rate
33.3%
1.50
Avg KDA
1.30
15.2
Avg Kills
12.0
13.0
Avg Deaths
15.0
146.1
DMG/Round
120.0
26.4%
HS %
24.4%
205
Combat Score
181
61.7%
Attack WR
44.8%
55.2%
Defense WR
38.3%

Viper vs KAY/O Performance Breakdown

Viper vs KAY/O matchup breakdown - overall performance winner

In the Viper vs KAY/O matchup, Viper demonstrates complete superiority across all four key performance categories. Based on 6 analyzed matches, Viper outperforms KAY/O in fragging efficiency, damage output, and both attack and defense win rates. This comprehensive advantage makes Viper the statistically favored pick when facing KAY/O in ranked Valorant matches.

Fragging Power
1.50Viper
1.30KAY/O
Fragging capabilities are closely matched between Viper and KAY/O, with KDA ratios of 1.50 and 1.30 respectively. This near-parity means mechanical skill and positioning will often determine which agent comes out ahead in direct duels.
Damage Output
146.1Viper
120.0KAY/O
Viper delivers substantially higher damage per round (146.1 ADR) compared to KAY/O's 120.0 ADR. This 26.1 damage differential per round adds up significantly over a match, giving Viper a major advantage in trading scenarios and multi-kill potential during site executes or retakes.
Attack Side
61.7%Viper
44.8%KAY/O
On the attacking side, Viper dominates with a 61.7% win rate compared to KAY/O's 44.8%. This 16.8 percentage point gap indicates Viper is significantly more effective at executing onto sites, whether through superior entry fragging, better utility usage for site takes, or stronger post-plant positioning.
Defense Side
55.2%Viper
38.3%KAY/O
Viper excels on the defensive half with a commanding 55.2% win rate, far surpassing KAY/O's 38.3%. This 16.8 percentage point advantage demonstrates Viper's superior ability to anchor sites, gather information, and deny enemy executes through effective utility and positioning.

Viper vs KAY/O Matchup Summary

The Viper vs KAY/O matchup in Valorant is a heavily one-sided matchup. Based on 6 competitive matches analyzed, Viper wins 66.7% of the time compared to KAY/O's 33.3%, a 33.3 percentage point difference. The most significant gap is in attack-side performance, where Viper consistently outperforms. In this Controller vs Initiator matchup, Viper has overwhelming superiority in this agent matchup. KAY/O should never take isolated fights against Viper and must rely entirely on team coordination, utility, and crossfires to compete effectively.

Viper vs KAY/O Fragging Analysis

Viper wins fragging stats against KAY/O in Valorant

Viper achieves a clean sweep in the fragging department, winning all five combat metrics against KAY/O in the Viper vs KAY/O matchup. This comprehensive dominance across KDA efficiency, kill production, survivability demonstrates that Viper holds systematic mechanical advantages in these encounters. Based on analysis of 6 competitive matches, Viper players can approach duels against KAY/O with confidence, while KAY/O players must completely avoid fair fights and instead focus on utility-based contributions, information gathering, and team coordination to remain impactful.

KDA
1.50Viper
1.30KAY/O
Viper holds a slight KDA edge in this matchup, recording 1.50 compared to KAY/O's 1.30. While this 0.20 point difference indicates Viper tends to come out ahead in engagements, the gap remains small enough that skilled KAY/O players can overcome it through superior positioning, utility timing, or simply winning crucial aim duels. The data suggests Viper's kit may offer marginally better tools for securing kills while staying alive, but KAY/O players shouldn't feel disadvantaged when taking fights in this matchup.
Avg Kills
15.2Viper
12.0KAY/O
The kill differential between Viper and KAY/O is dramatic: 15.2 versus 12.0, representing 3.2 additional kills per game for Viper. This massive gap shows Viper consistently dominates the kill feed when these agents meet. For KAY/O players, this data suggests a fundamental mismatch in direct combat scenarios. Success against Viper requires reimagining your role — become the setup player, the information gatherer, the utility specialist — rather than trying to match Viper's fragging output head-to-head.
Avg Deaths
13.0Viper
15.0KAY/O
The death disparity between Viper and KAY/O is stark: 13.0 versus 15.0 deaths per game. KAY/O dies 2.0 more times per match on average, fundamentally impacting their ability to influence rounds. This suggests KAY/O either takes unfavorable fights against Viper or lacks the tools to disengage safely. KAY/O players must completely rethink their aggression patterns — prioritize information and utility over kills, always have an exit plan, and never take coin-flip duels against Viper.
DMG/Round
146.1Viper
120.0KAY/O
The damage differential between Viper and KAY/O is exceptional: 146.1 ADR compared to just 120.0. Viper deals 26.1 more damage per round on average, indicating absolute dominance in direct combat exchanges. This level of disparity suggests Viper's kit, typical playstyle, or positioning patterns give them massive advantages in dealing damage while KAY/O struggles to even trade effectively. KAY/O players should treat Viper as a must-avoid duel and focus entirely on non-combat contributions or utility-based damage.
Headshot %
26.4%Viper
24.4%KAY/O
Viper demonstrates notably superior headshot accuracy against KAY/O: 26.4% versus 24.4%. This 2.1 percentage point gap in precision means Viper ends gunfights faster, conserves more ammo, and wins more 50-50 duels where both players see each other simultaneously. KAY/O faces a real disadvantage in aim duels and should compensate through utility, positioning, or weapon choices that don't require headshot precision (shotguns, Odin spraying through smokes, etc.).

Viper vs KAY/O Attack and Defense Performance

Attack Side
Viper
Viper61.7%
KAY/O44.8%
Defense Side
Viper
Viper55.2%
KAY/O38.3%

Attack Side Breakdown

The attack-side performance gap between Viper and KAY/O is dramatic: 61.7% versus 44.8%, a commanding 16.8 percentage point advantage. Viper dominates offensive scenarios in this matchup to a degree that requires KAY/O to fundamentally change their approach to attack-side play.

Our analysis of 6 competitive matches reveals Viper has overwhelming attack-side superiority in every measurable category. Site executions, entry success, post-plant conversion, and mid-round adaptability all massively favor Viper. This isn't a gap that KAY/O can overcome through practice or "playing better" — it's a structural matchup disadvantage. KAY/O teams must build their entire attack strategy around protecting KAY/O from direct Viper engagement: give KAY/O lurk roles, put them in trade positions rather than entry, and design executes where KAY/O's weaknesses are covered by teammate utility.

Under no circumstances should KAY/O take entry duels against Viper. The 16.8% attack gap makes entry fragging against Viper one of the lowest-percentage plays in Valorant. KAY/O must exclusively play support roles on attack: flash for teammates, smoke for executes, trade after entries, or create map pressure through lurks that don't involve Viper confrontation. Viper should actively hunt KAY/O entries, knowing the statistical advantage is overwhelming.

KAY/O's post-plant conversion rate against Viper is catastrophic. The data shows KAY/O fails to hold spike plants at a dramatically higher rate than Viper. Never leave KAY/O alone post-plant — they need constant teammate support, crossfire setups, and utility coordination to have any chance of winning these scenarios. Consider not planting at all if KAY/O is the only survivor. Viper should play extremely confidently in post-plants, knowing KAY/O struggles to convert even favorable positions.

Defense Side Breakdown

The defensive disparity between Viper and KAY/O is substantial: 55.2% versus 38.3%, a 16.8 point chasm. Viper absolutely dominates CT side in this matchup — their site holds are significantly harder to break, their retake contributions more impactful, and their defensive utility more effective at every level.

KAY/O cannot be trusted with traditional site anchor responsibilities against Viper. The 16.8% defensive gap is too large to overcome through positioning or individual skill. Teams must protect KAY/O: pair them with multiple teammates, give them off-site lurk positions, or have them rotate immediately when Viper's presence is identified on their site. Viper should aggressively anchor the most difficult sites on any map, knowing their defensive capability is overwhelming.

KAY/O should avoid retake scenarios against Viper entirely when possible. The data from 6 matches shows KAY/O's retake conversion rate against Viper is dramatically lower than average. If KAY/O must retake, require 3+ player numbers advantage and full utility coordination. Viper should play post-plant positions knowing KAY/O lacks the capability to effectively contest them. In clutch scenarios, Viper wins at overwhelming rates.

Economy decisions for KAY/O must account for their defensive inadequacy. Force buying against Viper is essentially throwing away credits — the defensive gap makes partial buys nearly unwinnable. KAY/O should always advocate for full saves, building toward rounds where team utility can compensate for their individual defensive weakness. Viper can confidently force and half-buy, knowing their defensive advantages persist across all economy states.

Overall Side Analysis

Viper demonstrates commanding superiority on both attack (61.7%) and defense (55.2%), comprehensively outperforming KAY/O across all phases of the game. Based on our analysis of 6 competitive matches, this is one of the more one-sided agent matchups in Valorant, with Viper holding advantages at every stage.

Map selection and team composition cannot fix KAY/O's disadvantage in this matchup. Viper outperforms across all map types and team structures. If you're playing KAY/O into Viper, your team composition needs to compensate heavily: strong fragging agents to carry KAY/O's weight, utility-heavy supports to cover their positioning, and coordination to avoid leaving KAY/O in isolated Viper encounters.

For ranked climbing, avoid playing KAY/O when you expect to face Viper frequently. The 33.7 combined percentage point disadvantage across both sides is too large to overcome through individual skill improvement. If Viper is meta in your rank bracket, strongly consider adding them to your agent pool or playing agents that have more neutral matchups.

Final verdict: Viper decisively wins the Viper vs KAY/O matchup. This isn't a skill check or a "play better" situation — Viper has systematic advantages that manifest across thousands of games. KAY/O players facing Viper should adjust expectations, play more supportively, and recognize that direct confrontations are statistically unfavorable at every stage of the game.

Controller vs Initiator Dynamics

The Controller (Viper) vs Initiator (KAY/O) dynamic creates asymmetric encounters where each agent brings fundamentally different tools to engagements. Viper's Controller abilities serve different purposes than KAY/O's Initiator kit, meaning direct fights often feature non-equivalent utility exchanges.

Understanding how Controller abilities interact with Initiator counterplay is essential for maximizing your agent's potential. Viper's Controller toolkit may excel at certain aspects while KAY/O's Initiator kit counters others. The Viper advantage suggests their role's capabilities translate better to winning these cross-role encounters on average.

Viper has favorable matchups against 16 agents and unfavorable matchups against 10 agents in Valorant. Viper's strongest matchup is against Veto with a 100.0% win rate. The most challenging matchup is Vyse at 16.7% win rate. Use the table below to find specific matchup details and performance metrics.

Viper matchup win rates and combat stats in Valorant (Patch 12.01)
Opponent
Win Rate
Matches
KDA
DMG/Rnd
HS %
Atk WR
Def WR
50.43%1171.25136.331.1%51.0%49.9%
48.72%1171.37140.333.0%47.3%52.5%
50.00%1061.29133.332.2%50.7%51.0%
50.00%781.51155.533.1%47.5%53.9%
55.26%761.38134.632.1%48.2%54.8%
43.48%691.33142.231.7%47.5%49.7%
51.06%471.45147.231.3%48.5%53.0%
56.25%321.37135.329.3%50.4%52.4%
45.16%311.34136.833.0%47.9%49.7%
45.45%221.40152.931.5%49.2%48.2%
57.14%211.56160.935.0%51.9%49.3%
25.00%201.20134.030.4%43.3%47.8%
44.44%181.29127.033.2%48.5%47.3%
57.14%141.22134.429.4%45.7%57.6%
69.23%131.38149.930.9%56.7%57.4%
54.55%111.46149.338.0%47.6%58.3%
62.50%81.57161.919.4%51.8%57.6%
16.67%61.31148.932.2%30.3%50.0%
66.67%61.30135.630.1%53.7%53.4%
50.00%61.66164.934.3%50.0%54.7%
66.67%61.50146.126.4%61.7%55.2%
20.00%51.33141.038.5%44.8%45.3%
50.00%41.10121.839.6%41.9%54.2%
25.00%41.20128.037.3%53.5%32.6%
100.00%41.91148.632.8%73.3%53.8%
33.33%31.19129.333.7%36.8%47.2%
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Frequently Asked Questions

What is Viper's best matchup in Valorant?

Viper's best matchup is against Veto, achieving a 100.0% win rate. Viper excels in this matchup through superior fragging ability and favorable utility interactions.

What is Viper's hardest matchup?

Viper's hardest matchup is against Vyse, with only a 16.7% win rate. Against this opponent, Viper should focus on team coordination and utility usage to compensate.

How many favorable matchups does Viper have?

Viper has 16 favorable matchups (50%+ win rate) and 10 unfavorable matchups in Valorant. Understanding these matchup dynamics helps you make better agent picks and adapt your playstyle.

How should I play Viper in difficult matchups?

When playing Viper in difficult matchups, prioritize team coordination, utility usage, and crossfires. Avoid isolated 1v1 duels against unfavorable opponents and look for opportunities to use Viper's abilities to create advantages. Adjust your positioning based on whether you're on attack or defense.

What stats matter most in Viper's matchups?

Key stats to analyze in Viper's matchups include win rate, KDA ratio, average damage per round, and attack/defense win rates. High damage matchups favor aggressive play, while low KDA matchups suggest playing more supportively and relying on team trades.

See Also: Other Controllers