Aster vs Ostium: Full Comparison 2026
Detailed comparison of Aster and Ostium perpetual DEXs including trading fees, 24h volume, open interest, supported chains, and airdrop opportunities. Find out which perp exchange is better for your trading needs.
Quick Verdict
Aster comes out ahead in this comparison with 3 advantages vs 0 for Ostium. It has higher trading volume, more open interest, and lower trading fees. Trading $100K monthly on Aster saves ~$60 in fees.
Higher Volume
Aster
Lower Fees
Aster
More OI
Aster
Active Airdrop
Neither
Side-by-Side Comparison
Real-time metrics from DefiLlama. Green indicates the better value.
| Metric | Aster | Ostium |
|---|---|---|
| 24h Volume | $5.68B | $95M |
| Open Interest | $2.73B | $38M |
| Maker Fee | 0.005% | 0.03% |
| Taker Fee | 0.04% | 0.1% |
| Blockchain | Multi-chain | Arbitrum |
| Airdrop Status | Claiming | PointsLive |
| Order Type | CLOB | Oracle |
Aster Pros & Cons
Ostium Pros & Cons
Trading Cost Comparison
Estimated taker fees for different trade sizes (excluding slippage and funding)
| Trade Size | Aster | Ostium | Savings |
|---|---|---|---|
| $1,000 | $0.40 | $1.00 | $0.60 on Aster |
| $10,000 | $4.00 | $10.00 | $6.00 on Aster |
| $50,000 | $20.00 | $50.00 | $30.00 on Aster |
| $100,000 | $40.00 | $100.00 | $60.00 on Aster |
Aster vs Ostium: Detailed Analysis
Volume & Liquidity
Aster leads in 24-hour trading volume with $5.68B, compared to $95M for Ostium. Higher volume typically means better liquidity, tighter bid-ask spreads, and less slippage on trades. For active traders executing multiple trades daily, this difference can significantly impact overall costs.
Fee Structure
Aster charges 0.005% maker / 0.04% taker fees, while Ostium charges 0.03% maker / 0.1% taker fees. For a trader with $100,000 monthly volume, using Aster would save approximately $60 per month in trading fees alone.
Open Interest
Aster has $2.73B in open interest, versus $38M for Ostium. Open interest represents the total value of outstanding derivative contracts that haven't been settled. Higher OI generally indicates more active trading and can provide insights into market sentiment.
Airdrop Opportunities
Neither platform currently has an active airdrop. Aster: Claiming. Ostium: PointsLive. Check our airdrops page for the latest updates.
Aster vs Ostium FAQ
Conclusion: Which Should You Choose?
Based on the data, Aster appears to be the stronger choice overall with advantages in trading volume, open interest, lower fees. However, the best choice depends on your specific needs:
- • For lowest fees: Choose Aster
- • For best liquidity: Choose Aster
- • For airdrop farming: Neither has an active airdrop
- • For large orders: Choose Aster for deeper liquidity
Related Perp Comparisons
Learn more about Aster or Ostium
Compare all perp fees · View perp airdrops · Track open interest