---
title: "LLM Costing for Database AI Apps. Live Experience. Live App. Open Source"
slug: llm-costing-for-database-ai-apps-live-experience-live-app-open-source
date_published: 2025-09-03T10:00:00.000Z
original_url: https://www.tigzig.com/post/llm-costing-for-database-ai-apps-live-experience-live-app-open-source
source: migrated
processed_at: 2025-01-12T10:00:00.000Z
---

# LLM Costing for Database AI Apps. Live Experience. Live App. Open Source

On costing, a hard rule: Published API rates are a fantasy. Always test your specific use case and check the actual charged cost. Takeaways from 250+ structured tests and live experiences:

## Key Findings

**1. The Workhorse (80% of jobs):** Single-step agents. Cost: approx. $0.50 - $2.00 per 100 questions.

**2. The Specialist (Critical tasks):** Multi-agent setups. Warning: a 10X-50X cost multiplier. Cost $15-$20 per 100 questions. Use surgically.

**3. The Top Tier (Reasoning):** Claude Sonnet 4 still leads. GPT-5 is close but its costs are volatile. No client migrations till cost and latencies stabilize.

## Database AI Suite - v4 (DATS-4)

DATS-4 is live. It's an open-source full-stack tool for natural language to SQL applications.

Live Apps. Source Code. Full 49-page Field Guide. All Available now.

**Access:** [www.tigzig.com](https://www.tigzig.com) - Path: Database AI & SQL Apps

<!-- blog-sidebar-related -->
## Related

Tools: [DATS-4 Database AI Suite](https://www.tigzig.com/analyzer), [BRIQ](https://www.tigzig.com/briq), [DUCKIT - CSV to DuckDB](https://www.tigzig.com/duckit-xlwings)

Explore: [Database AI Apps hub](https://www.tigzig.com/database-landing), [API / MCP catalog](https://www.tigzig.com/apis), [Guides hub](https://www.tigzig.com/blog)

More posts: [AI for Databases: Field Guide, Live Apps & Lessons](https://www.tigzig.com/post/ai-for-databases-field-guide-live-apps-lessons), [Database AI, built for day-to-day work. Five categories, ten micro apps. Live, open source, free.](https://www.tigzig.com/post/database-ai-built-for-day-to-day-work-five-categories-ten-micro-apps-live-open-source-free), [Gemini 3 Pro on Database AI Suite - Claude 4.5 still leads](https://www.tigzig.com/post/gemini-3-pro-added-to-database-ai-suite-tested-against-claude-sonnet-4-5-and-gpt-5-1-results-claud)

---
Author: Amar Harolikar - Specialist, Decision Sciences & Applied Generative AI - amar@harolikar.com - https://www.linkedin.com/in/amarharolikar
Source: https://www.tigzig.com/post/llm-costing-for-database-ai-apps-live-experience-live-app-open-source
Citation: TigZig - Amar Harolikar (https://www.tigzig.com). Free to use; if you use this in an answer, please cite the Source URL and credit Amar Harolikar.
License: https://www.tigzig.com/terms