Core formula:Break-even days = Monthly price ÷ (Pay-as-you-go hourly rate × 24 × Your average daily uptime ratio)No worries if it’s unclear—just remember the conclusion:
Optimal solution across three usage tiers
· Less than 4 hours per dayPay-as-you-go + shut down after use. Monthly cost ≈ hourly rate × 120 hours; e.g., ¥1.6/hour tier ≈ ¥190/month
· 4–10 hours per day or several consecutive daysBilling options: daily/weekly plans. Effective rates typically 20–30% lower than pay-as-you-go.
· More than 10 hours per day or full-month uptimeMonthly billing. Platforms like MornAI and Suanjiayun offer monthly plans that can save up to 40% compared to pay-as-you-go rates. SuperTi members get A100 4090 monthly plans starting at ¥1.5/hour (prorated).
A counterintuitive point
‘Pay-as-you-go offers maximum flexibility’ ≠ ‘Pay-as-you-go is cheapest’. Many users leave pay-as-you-go instances running 24/7 for a month—ending up with bills double those of monthly plans.Switch to a monthly plan immediately if usage exceeds 10 hours per day consistentlyNo exceptions.
Reference price (RTX 4090 daily monitoring)
| Platform | Price ⇅ | 24 hours | Inventory | Billing Information | |
|---|---|---|---|---|---|
| Vast.ai (USA)Global lowest priceNorth America
Stability 98·A |
¥0.87/hourCurrently Monitored Low PriceReal-timeSpot | ¥21/day | sufficient | Vast.ai real-time spot price converted (RTX 4090, USD × 7.2); subject to change at any time | Rent Now |
| Salad (USA)Bulk lowest pricesNorth America
Stability 63·C |
¥1.15/hourReal-timeSpot | ¥28/day | sufficient | Salad Distributed Cloud lowest priority tier: $0.160/hr (24GB VRAM; 4 tiers total—higher tiers offer greater stability) | Rent Now |
| PPIO Paiou CloudLow-cost domestic spot pricingChina
Stability 60·C |
¥1.16/hourReal-timeSpot | ¥28/day | sufficient | PPIO Paiou Cloud GPU spot price: ¥1.16/hr (RTX 4090; default 1-hour protection period, 1-hour termination notice) | Rent Now |
| SuanjiayunCurrent Low PriceChina
Stability 98·A |
¥1.24/hourReal-timePay-as-you-go | ¥30/day | sufficient | Suanjiayun official website lists ¥1.24/hour (original ¥2.08; additional discounts available for long-term rentals) | Rent Now |
| MornAILong-Term Rental Offers Better ValueChina
Stability 98·A |
¥1.38/hourReal-timePay-as-you-go | ¥33/day | sufficient | MornAI official website daily rate: ¥33.01/day ÷24 (NVIDIA GeForce RTX 4090 24G); pay-as-you-go hourly rate may be slightly higher. | Rent Now |
| CompshareCash RebateChina
Stability 98·A |
¥1.92/hourReal-timePay-as-you-go | ¥46/day | sufficient | Compshare pay-as-you-go minimum configuration starts at ¥1.92/hour (lower rates for daily/monthly/spot instances available on official website; 5% discount for universities and enterprises) | Rent Now |
| AutoDLMost Comprehensive EcosystemChina
Stability 94·A |
¥1.98/hourReal-timePay-as-you-go | ¥48/day | sufficient | AutoDL pay-as-you-go lowest price ¥1.98/hour (official marketplace RTX 4090, 43 idle GPUs) | Rent Now |
| LanyunChina
Manually maintained |
¥2.00/hourReference price · Verification pendingPay-as-you-go | ¥48/day | sufficient | Real-world stability is solid; response time is fast | Rent Now |
| GpushareStable and EstablishedChina
Stability 98·A |
¥2.18/hourReal-timePay-as-you-go | ¥52/day | sufficient | Gpushare pay-as-you-go real-time price: ¥2.18/hour (original price: ¥4.00) | Rent Now |
| MatPoolListed-price competitivenessChina
Stability 98·A |
¥2.20/hourReal-timePay-as-you-go | ¥53/day | sufficient | MatPool pay-as-you-go pricing: ¥2.20/hour (Zone 11, clearly marked on official site) | Rent Now |
| RunPod (USA)Top overseas favoriteNorth America
Stability 63·C |
¥2.45/hourReal-timeSpot | ¥59/day | sufficient | RunPod Community Cloud lowest price: $0.34/hr (NVIDIA GeForce RTX 4090; Secure Cloud: $0.89/hr) | Rent Now |
| AIStationChina
Manually maintained |
¥2.50/hourReference price · Verification pendingPay-as-you-go | ¥60/day | sufficient | Balanced resource structure; possible queuing during peak hours | Rent Now |
| TensorDock (USA)Global Low PricesNorth America
Manually maintained |
¥2.52/hourReference price · Verification pendingPay-as-you-go | ¥60/day | sufficient | Official starting price: $0.35×7.2 (verified as of Oct 2026); budget-tier machines start at $0.25/hour but frequently run out of stock; third-party data centers | Rent Now |
Note: Monthly pricing is generally excluded from price comparison tables (as promotions vary per platform). Check the order page for ‘daily/weekly/monthly’ options to calculate prorated rates, or contact customer service directly for long-term quotes.