Your Model Won't Fit.
Do the Math Before the OOM.

3 AM. Training run #4 just died. nvidia-smi says 0 bytes free. You didn't budget KV cache. You didn't account for framework overhead. The GPU you provisioned at 4 PM is now a paperweight until morning.

FP16 bytes per param2
INT4 bytes per param0.5
KV Cache / 1K tokens~1.2 GB
Spot vs On-Demand60-70%

LLM Inference Latency Estimator

The spec sheet says H100 = 15× T4 TFLOPS. But a 7B model is 150× faster on H100. The bottleneck isn't compute —it's memory bandwidth. 12 models × 7 GPUs × 4 quantization levels with real benchmark data.

Model Throughput by GPU →

GPU Training Cost Estimator

arXiv says 72 GPU-hours. Your AWS bill says 3× that. Spot/preemptible pricing across 6 providers, on-demand real rates. No guesswork —just the per-hour truth.

Run 6-Provider Cost Matrix →

LLM Fine-tuning Cost Estimator

Compare fine-tuning across AWS Bedrock, Google Vertex AI, Azure OpenAI, and self-hosted GPU. Full fine-tuning vs LoRA vs QLoRA. Training cost, GPU hours, inference pricing, and hidden hosting/idle fees (Azure $1,241/mo). 2026 pricing with per-platform trap warnings.

4-Platform FT Cost Model →

LLM Params →FP16 VRAM

7B × 2 bytes = 14 GB. Then KV cache. Then Adam optimizer states. Then framework overhead. Your 16 GB GPU just became a bottleneck you didn't see coming.

FP16 VRAM Profiler →

LLM Params →INT4 VRAM

Same 70B model. FP16 = 140 GB —you need 4× A100s. INT4 = 35 GB —one A100. You're not debating perplexity. You're debating whether the model loads at all.

INT4 VRAM Profiler →

LLM API Pricing Calculator

12 models across 6 providers. Token pricing pages tell one story. Your workload's chat-vs-code-vs-summarization ratio tells another. Prompt caching cuts costs 90%. Batch processing: 50%. Model the real bill before it lands.

Compare Provider Pricing →

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