Browserbase
AI Infrastructure
Provides agents with web access for tasks.
- Web Access
- Agent Bridge
- Security Compliance
Free
Best Kiln Alternatives in 2026
Kiln: Build better AI systems with evals, RAG, agents, synthetic data, fine-tuning, and prompt optimization. Here are 12 alternatives — compare pricing, free plans and API access side by side.
Kiln vs. alternatives
| Tool | Category | Pricing | Starting at | Free plan | API | Open source |
|---|---|---|---|---|---|---|
| AI Infrastructure | Free | — | |||
| AI Infrastructure | Free | — | |||
 | AI Infrastructure | — | — | |||
 | AI Infrastructure | Freemium | $199/month | |||
 | AI Infrastructure | Freemium | $50/month | |||
 | AI Infrastructure | Paid | €9/month | |||
 | AI Infrastructure | Paid | — | |||
 | AI Infrastructure | Paid | — | |||
 | AI Infrastructure | Freemium | $16/month | |||
 | AI Infrastructure | Freemium | $199/month | |||
 | AI Infrastructure | Paid | $299/month | |||
 | AI Infrastructure | Paid | — | |||
 | AI Infrastructure | — | — |
Top Kiln alternatives
Tinker
AI Infrastructure
Flexible API for efficient open source model fine-tuning with LoRA.
- LoRA Fine-Tuning
- Public API
Respan
AI Infrastructure
AI router with built-in observability and automated evaluations.
- LLM Observability
- Automated Evals
- Prompt Optimization
Freemium
Pinecone
AI Infrastructure
AI knowledge platform for accurate, fast, cost-effective AI.
- AI Knowledge
- Vector Databases
Freemium
Respira for WordPress
AI Infrastructure
Independent AI infrastructure for WordPress with builder-aware tooling across 17 platforms, duplicate-first safety, and the WordPress Abilities API.
- AI Page Builder
- AI Design System
- AI Store Management
Paid
SurrealDB
AI Infrastructure
A multi-model database and agent memory layer for AI applications.
- Agent Memory
- Knowledge Graphs
- Temporal Facts
Paid
Command R+
AI Infrastructure
Enables enterprises to automate processes and gain insights from data.
- AI Security
- Data Insights
- Enterprise AI
Paid
Firecrawl
AI Infrastructure
Supercharge AI agents with web data and beyond.
- Web Data API
- AI Agents
- Search API
Freemium
Keywords AI
AI Infrastructure
AI router with observability and automated evaluations
- LLM Engineering
- LLM Observability
- LLM Evals
Freemium
Latitude
AI Infrastructure
Open-source AI agent monitoring platform with full observability into production failures.
- Agent Monitoring
- Self-Healing
- Behavior Patterns
Paid
Nanonets
AI Infrastructure
Automates manual processes and delivers clean data to systems of record
- AI Agents
- Workflow Automation
- Data Extraction
Paid
Scam AI
AI Infrastructure
Detects deepfakes, forged documents, and AI fraud in real time.
- Deepfake Detection
- Forged Document Detection
- AI Fraud Prevention