High Cloud Inference Cost
The expense of running LLM/ML inference via cloud APIs (per-token or per-request pricing) against S3 data at scale.
Summary
The expense of running LLM/ML inference via cloud APIs (per-token or per-request pricing) against S3 data at scale.
This is the economic constraint that limits LLM adoption over S3 data. Embedding generation, metadata extraction, and classification are useful but only viable if inference costs do not exceed the value of the results.
- Cost is not just API pricing. Egress charges for moving S3 data to inference endpoints, and storage costs for embeddings, add to the total.
- "Run it locally" is not free either. Local inference has GPU hardware, power, and maintenance costs. The break-even volume depends on model size and throughput.
- Local Inference Stack
solvesHigh Cloud Inference Cost — runs models on local hardware - Offline Embedding Pipeline
constrained_byHigh Cloud Inference Cost — batch processing amortizes cost - Embedding Generation, Metadata Extraction, Data Classification
constrained_byHigh Cloud Inference Cost - Hybrid S3 + Vector Index
constrained_byHigh Cloud Inference Cost — embedding generation is expensive scoped_toLLM-Assisted Data Systems, S3
Definition
The expense of running LLM/ML inference via cloud APIs (per-token or per-request pricing) against S3-stored data at scale.
Recent developments
- H100 SXM5 spot at $1.03/hr — 40-85% cheaper than hyperscalers. Spheron spot pricing leads the market at $1.03/hr H100 SXM5 (May 2026); neo-cloud providers now offer H100 capacity 40-85% below AWS/GCP/Azure published rates. Per Spheron — GPU Cloud Pricing 2026.
- AWS H100 pricing dropped 44% in June 2025. Hyperscaler response to neo-cloud price pressure — AWS cut H100 pricing by 44% in June 2025, with similar adjustments across GCP and Azure following. Per Spheron — GPU Cloud Pricing 2026.
- B200 on-demand is now the best $/token leader. B200 on-demand at $0.42/M tokens edges out H100 PCIe ($0.47/M) despite higher hourly rate; on spot, B200 at $2.12/hr yields ~$0.15/M tokens — the cost leader for checkpoint-friendly workloads. Per GMI Cloud — GPU pricing A100 vs H100 vs H200.
- Serverless GPU compute fills the spot/dedicated middle. Modal (~$3.95/hr H100), Together AI ($3.49/hr → $2.25/hr reserved), and Crusoe Cloud all serve the per-second-billing inference-API alternative to hosted OpenAI/Anthropic APIs. Per Crusoe Cloud Pricing.
- H200's 141 GB VRAM beats H100 once concurrency scales. H200 at $2.60/hr often beats H100 at $2.00/hr economically past a certain concurrency threshold — the larger HBM holds more KV cache + more concurrent requests per GPU. Per GMI Cloud — Best Cloud GPUs for AI Inference.
- Nebius reserved-month pricing as the AWS alternative. Nebius's $2.00/hr H100 and $2.30/hr H200 with multi-month agreements is the standard "rent capacity, not API tokens" path for teams escaping hosted-API per-token cost. Per Spheron — GPU Cloud Pricing.
Connections 22
Outbound 2
scoped_to2Inbound 20
solves11constrained_by7Resources 3
Official AWS SageMaker documentation on inference cost optimization best practices, covering multi-model endpoints, autoscaling, instance selection, and S3 model streaming to reduce costs.
NVIDIA technical blog showing how streaming models from S3 reduces cold-start latency and infrastructure costs compared to pre-loading models to local storage.
Detailed breakdown of inference unit economics including GPU costs, model storage on S3, and hidden expenses that make up 60-80% of total spend.