Dify vs Google Vertex AI vs LangChain vs OpenAI API
| Attribute | ||||
|---|---|---|---|---|
| Category | AI Agents & Assistants | AI & Automation | AI Agents & Assistants | API Management |
| Pricing | Free tier | Free tier | Free tier | Paid |
| Starting price | $59/month | $0/month | $39/month | — |
| Free tier | Yes | Yes | Yes | No |
| Free trial | No | Yes | No | Yes |
| Deployment | — | — | — | — |
| API available | Unknown | Unknown | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | — | — | — |
| Integrations | — | — | — | — |
| Company | — | — | — | Founded 2020 |
| Feature attributes | ||||
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.