Next.js + Modal
for AI startups.
Modal runs custom Python in serverless GPUs. Pair with Next.js for AI features that need bespoke models or libraries. For AI startups: Custom Python on GPUs without managing Kubernetes.
This stack, applied to you.
For AI startups needing custom Python on GPUs, Next.js + Modal is a clean stack. Modal hosts Python functions on demand-allocated GPUs without managing Kubernetes. Next.js calls them via HTTP. Useful for fine-tuned model inference, custom RAG with proprietary models, or unusual Python ML dependencies. The stack lets a small AI team ship custom-model products without DevOps headcount.
AI startups-specific gotchas
- Cold starts with GPUs (10-30 seconds) — design for it
- Pricing scales with GPU time — monitor closely
- Python deps add complexity — keep image small
- Auth pattern needs design — Modal has Token-based auth
- Mixing Modal serverless and Next.js serverless adds reasoning complexity
An AI startup serves a fine-tuned Llama 3 8B on Modal. Cost per million tokens: $0.20 (vs $3 for Anthropic Claude Haiku). Cold start: 12 seconds — handled with warm-up pings.
Common AI startups questions.
What about Replicate?
Real alternative. Replicate is more model-marketplace; Modal is more general Python serverless.
How do we handle production scaling?
Modal's auto-scaling handles bursts. For predictable loads, set min instances to avoid cold starts.
We've shipped this.
Used for custom Python AI services. If you're a AI startups shipping on this stack, we can save you a quarter.
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