Overview
Strengths & Best For
Hot Aisle provides bare-metal H100, A100, and RTX GPU servers with no virtualization overhead and dedicated hardware for AI training and HPC workloads, based in the UK. Monthly and on-demand billing options are available for teams that need consistent, dedicated GPU performance without shared-tenancy concerns. A strong bare-metal GPU option for UK-based HPC teams and AI labs that need maximum hardware performance and full control over their compute environment.
- Bare-metal performance
- No virtualization overhead
- UK presence
- Bare-metal only — requires more infrastructure management
- Limited self-service tooling
- Smaller ecosystem vs cloud providers
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Modal is a serverless GPU cloud purpose-built for AI workloads, offering per-second billing with zero idle cost. GPU catalog: B300, B200, H200 SXM, H100 SXM5, RTX PRO 6000, A100 80GB, A100 40GB, L40S, A10, L4, T4. Starter and Team plans include free monthly compute credits. Multi-node training up to 128 B200s with 3,200 Gbps InfiniBand. Python-native SDK. SOC 2 and HIPAA compliant.
- B300, B200, H200 — competitive Blackwell/Hopper pricing
- Per-second billing with zero idle cost — no minimum hours
- Multi-node training up to 128 B200s with 3,200 Gbps InfiniBand
- Python-native SDK — no infra management
- Starter and Team plans include free monthly compute credits
- SOC 2, HIPAA, data residency controls
- Less control over underlying infrastructure vs raw VMs
- Pricing can be unpredictable for sustained high-throughput workloads
- Smaller GPU catalog than dedicated cluster providers
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Live GPU Pricing
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Key differences
Hot Aisle
Bare-metal GPU infrastructure
Modal
B300, B200, H200, H100 — serverless GPU, per-second billing