FactGuard vs Omniscient AI
FactGuard
factguard.org
Omniscient AI
omniscient.newsSide by side
| Figure | FactGuard | Omniscient AI |
|---|---|---|
| Price from | $3.08/mo | $399/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| API | Yes | Yes |
| Plans published | 8 | 4 |
| Spec score · AI Fact-Checking Tools | 9.1 (#1) | 7.9 (#9) |
| Purpose | FactGuard checks claims, headlines, or URLs and returns a verdict with reasoning and cited sources. | Omniscient AI offers source-linked fact-checking for publishers through an API, a WordPress plugin, and a Chrome extension. |
| Security | The privacy policy lists TLS in transit, Firebase App Check, cryptographic nonces for Sign in with Apple, and password hashing by its authentication provider as security measures. | The developer documentation requires Bearer-token authentication for API requests and says API keys can be revoked from the dashboard. |
Plans
FactGuard
- FreeFree
- Free / Dev APIFree
- FactGuard Pro Monthly$4.99 a month
- FactGuard Pro, Monthly$4.99 a month
- FactGuard Pro Annual$36.99 a year
- FactGuard Pro, Annual$36.99 a year
- Pro API$49 a month
- Scale API$199 a month
Omniscient AI
- MeteredFree
- Always-On Pro$399 a month
- Agency$1,000 a month
- Enterprise$10,000 a year
In their own words
FactGuard
FactGuard checks claims, headlines, or URLs and returns a verdict with reasoning and cited sources. It offers Quick, Thorough, and Private verification modes, with a confidence score from 0 to 100 and analysis of framing and potential bias. The web app limits submissions to 1,000 characters; its free tier uses Quick mode and displays the 30 most recent checks. The free plan costs nothing, billed forever, and includes three checks per day. Pro includes unlimited checks and history, Thorough verification, all modes, shareable verdict cards, and bulk export, but its listed plans are marked coming soon. FactGuard also describes an early-access MCP server and a Fact-Check API with a stated free tier of 100 calls per day; API access and team pricing are under development. The privacy policy says claims sent to the backend are not stored per user on FactGuard's servers. Optional on-device verification is not transmitted to FactGuard or third-party processing providers. FactGuard cautions that automated verdicts can be inaccurate, incomplete, or out of date and advises checking cited sources.
Omniscient AI
Omniscient AI provides source-linked fact-checking through an API, a WordPress plugin, and a Chrome extension. An API response contains a consensus Trust Score, model verdicts, and source citations in structured JSON. Each request runs GPT-4o Mini, Perplexity Sonar Pro, and Gemini 2.5 Flash; the developer page says a consensus result returns in under three seconds. The WordPress plugin can add a Fact-vs-Opinion bar and automatically analyze published articles using the publisher’s API key. In Chrome, users can check a webpage or selected text and view results with supporting sources. Documentation also describes webhook delivery and an OBS browser source. Enterprise API v1 accepts claims up to 8,000 characters and lists ten supported languages. The pricing FAQ presents Trust Scores as a triage aid and recommends human review for high-stakes decisions. The try page offers five free checks after Google sign-in. The free plan has a $0 monthly base, then charges $0.005 per fact-check request; paid monthly plans include Always-On Pro at $399 and Agency at $1,000.