Why this combo works
This pairing aligns because OpenAI matches the intermediate complexity and the use case’s retrieval requirements.
How to build
Build a Knowledge Base Agent with OpenAI
Use case: Knowledge Base AgentTool: OpenAIEstimated time: 5-9 daysCost: $160 - $450 • $0-$300/mo
Tool profile
GPT-5.2 and o-series reasoning models with the Responses API, AgentKit, and built-in tools for web search, code execution, and computer use.
Pricing model: usage-based
Prerequisites
- Tool credentials for OpenAI
- Use-case source data or context
- Review policy and content safety guardrails
Cost breakdown
- LLM + infra: estimated $160 - $450
- OpenAI range: $0-$300/mo
- Monitoring and storage: typically +15-25%