Compare hub
Comparison · 2026
Ref Hub vs Second Opinion Extension
Ref Hub vs Second Opinion Extension: side-by-side comparison of pricing, ratings, and features on SoftwareVital (2026).
Pricing models differ: Ref Hub is paid, Second Opinion Extension is free. Feature lists share 0 overlapping items across the two listings.
paid
AI reference check software that runs skills assessments for hiring teams, with unlimited users and unlimited referees included.
VS
free
Second Opinion Extension is a free browser extension that fact-checks selected web text with Grok AI to flag inaccuracies and bias.
Side-by-side
| Attribute | Ref Hub | Second Opinion Extension |
|---|---|---|
| Rating | — | — |
| Reviews | — | — |
| Pricing | paid · $12 | free |
| Votes | 0 | 0 |
| Category | AI Assistant | AI API |
Features checklist
| Feature | Ref Hub | Second Opinion Extension |
|---|---|---|
| Unlimited Users | ||
| Unlimited Referees | ||
| All Features | ||
| 3 Bonus Credits for new users | ||
| Free to install and use | ||
| Easy to use with a simple right-click action | ||
| Provides quick fact-checks | ||
| Supports multiple browsers | ||
| Requires a Grok API key | ||
| which incurs token usage costs | ||
| Accuracy depends on Grok AI | ||
| so verification from multiple sources is still recommended |