Kiln vs NLSQL
Kiln
kiln.techNLSQL
nlsql.comSide by side
| Figure | Kiln | NLSQL |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · AI Data Analysis Tools | 7.8 (#13) | 8.2 (#6) |
| Intended users | Kiln describes its audience as engineers, data scientists, product managers, QA, and subject matter experts working on AI systems. | NLSQL is designed to let team members query corporate data without SQL skills or waiting for an analyst. |
| Security | Kiln says its Python library is MIT-licensed and its source-available desktop app has public CI builds and checksums for every release. | NLSQL says its Azure deployment runs in the customer's subscription and keeps sensitive data within the customer's IT ecosystem. |
| Support | The Individual plan includes community support, Team includes email support, and Enterprise includes SLA and priority support. | NLSQL's Customer Success team offers help getting started and answering questions. |
Plans
In their own words
Kiln
Kiln is an AI workbench for teams building and improving AI systems, with evaluation, fine-tuning, and optimization tools. Users can describe an evaluation goal and generate prompts and synthetic datasets, then compare judge results with human ratings. Kiln supports composing agents and subagents, inspecting tool calls, and evaluating each level of an agent hierarchy. It supports MCP servers and providers including AWS Bedrock, Azure OpenAI, Vertex AI, OpenAI, Anthropic, Fireworks, Gemini, Ollama, and OpenAI-compatible endpoints. Datasets, traces, and evaluations sync to Git. Prompts, outputs, ratings, and fine-tuning jobs are stored as JSON files on the user's filesystem, while provider API calls go directly from the user's machine to the chosen provider. Kiln says it can run fully offline with Ollama, vLLM, Llama.cpp, or another compatible local server. The free Individual plan includes a Python library, source-available desktop app, Git-synced local datasets, rate-limited standard models, and community support.