AI chatbots: the tech stack of 41 real products
General-purpose chat apps and chat interfaces over one or more models.
What sets them apart
Picks at least twice as common here as among products overall, in decisions at least 10 of them show.
The typical stack
The leading pick where at least 8 of them show the decision and the leader has at least a quarter of it.
| Decision | Most common pick | Share | At default usage |
|---|---|---|---|
| Frontend Framework | 17 of 30 · 57% | — | |
| LLM API | 25 of 27 · 93% | $10/mo · GPT-6 Luna | |
| AI SDK & Agent Framework | 14 of 20 · 70% | — | |
| Database | 6 of 17 · 35% | — | |
| Vector Database | 6 of 16 · 38% | $51/mo · Starter | |
| Backend Framework | 6 of 11 · 55% | — | |
| Transactional Email | 5 of 11 · 45% | $20/mo · Essentials 50k | |
| Database Access & ORMs | 5 of 9 · 56% | — | |
| Image & Video Hosting | 8 of 9 · 89% | — |
Monthly bills add up to about $81 at the calculators' default usage, list prices. Set your own usage →
What they chose, decision by decision
Among the AI chatbots that show each choice, from makers' products and open-source code alike.
Small samples, fewer than 8 products: Hosting (Cloudflare 2, Render 2) · Error Monitoring (Sentry 6) · Payments (Stripe 4, Lemon Squeezy 2) · Product Analytics (PostHog 5) · Web Analytics (Plausible Analytics 2, Vercel Web Analytics 2) · Authentication (Better Auth 2, Clerk 1) · File Storage (Amazon S3 2, Uppy 1) · LLM Observability & Evals (LangSmith 2, Langfuse 1)
AI chatbots we track
19 makers' products and 22 open-source projects. Makers' products first.