Butterfly Knife — CS2 finishes, cases and drop odds
The Butterfly Knife is a CS2 knife with 25 finishes, dropped as a rare-special (gold) item by 5 cases. The best odds are 0.256% per opening (1 in 391) in the Operation Breakout Weapon Case.
Cases that can contain a Butterfly Knife
5 CS2 cases contain the Butterfly Knife, listed below by the chance of pulling one from a single opening. The best odds are in the Operation Breakout Weapon Case at 0.2558% (1 in 391), where 13 of its 13 knife/glove finishes are Butterfly Knife finishes.
| Case | P(Butterfly Knife) | Finishes / pool | Open cost | |
|---|---|---|---|---|
 Operation Breakout Weapon Case | 0.2558% · 1 in 391 | 13 / 13 | $39.42 | Open |
 Dreams & Nightmares Case | 0.0512% · 1 in 1,955 | 6 / 30 | $4.34 | Open |
 Operation Riptide Case | 0.0512% · 1 in 1,955 | 6 / 30 | $17.32 | Open |
 Spectrum 2 Case | 0.0512% · 1 in 1,955 | 6 / 30 | $22.43 | Open |
 Spectrum Case | 0.0512% · 1 in 1,955 | 6 / 30 | $24.46 | Open |
Odds = the case's gold chance × Butterfly Knife finishes ÷ all knife/glove finishes in its pool, with every finish equally likely (Doppler phases share one finish, as in the game). They cover any Butterfly Knife finish, before wear and StatTrak. Open cost is the case + key from DropLabz's Steam market snapshot (market data updated Oct 27, 2026).
The cheapest case to chase a Butterfly Knife in is the Dreams & Nightmares Case: at $4.34 per opening and 1 in 1,955, that is about $8,484.70 of openings per Butterfly Knife on average, and a 5.0% chance of at least one in 100 openings.
Butterfly Knife price
The cheapest Butterfly Knife is the Butterfly Knife | Safari Mesh in StatTrak™ Battle-Scarred condition, at $509.05 on the Steam Community Market (market data updated Oct 27, 2026). 25 of its finishes are priced in the snapshot. Compare it with every other type on cheapest CS2 knives.
Finishes (25)
Each linked finish opens its own page: Steam price by wear, the cases that drop it with the odds of that exact finish, and every trade-up route to it with the input float each wear needs.
Trade up to a Butterfly Knife
Since the October 2025 update, 5 Covert skins from a case can become one of its knives. 24 Butterfly Knife finishes can be targeted — pick one in the finish list above, or browse every Covert → knife contract.
Related knives
Work out your chance over any number of openings with the CS2 knife chance calculator, compare every case on CS2 knife odds by case, or see the cheapest cases for a knife. Back to all CS2 knife types.