ChatGPT vs ChatPDF vs Grok vs Obsidian
| Attribute | ||||
|---|---|---|---|---|
| Category | AI & Automation | AI Agents & Assistants | AI Agents & Assistants | Note-taking & Knowledge |
| Pricing | Free tier | Free tier | Free tier | Free tier |
| Starting price | $8/month | $19.99/month | $40/month | $4/seat/month |
| Free tier | Yes | Yes | Yes | Yes |
| Free trial | No | No | Yes | No |
| Deployment | — | Cloud | — | Cloud |
| API available | Yes | Unknown | Unknown | Unknown |
| Platforms | — | ios, android | — | ios, android, windows, macos, linux |
| Certifications | — | — | — | — |
| Integrations | — | — | — | 2 |
| Company | Founded 2015 | — | Founded 2023 | Founded 2020 |
| Feature attributes | ||||
| Sso Saml | — Unknown | — Unknown | — Unknown | — Unknown |
| Rbac | — Unknown | — Unknown | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | — Unknown | — Unknown | — Unknown | — Unknown |
| Data Export | — Unknown | — Unknown | — Unknown | — Unknown |
| Prebuilt Integrations | — Unknown | — Unknown | — Unknown | — Unknown |
| Visual Workflow Builder | — Unknown | — Unknown | — Unknown | — Unknown |
| Code Steps | — Unknown | — Unknown | — Unknown | — Unknown |
| Llm Access | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Ai Agents | — Unknown | — Unknown | — Unknown | — Unknown |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.