Vertex AI Prompt Optimizer Pricing in 2026
Vertex AI Prompt Optimizer does not publish its plans; ask docs.cloud.google.com for a price.
What the alternatives cost
| Product | Free | Paid from |
|---|---|---|
| Dify | Free plan | $590 |
| AnythingLLM | Free plan | $50 |
| PrivateGPT | Free plan | — |
| RAGFlow | Free plan | $29 |
| Flowise | Free plan | $35 |
| Langflow | Free plan | — |