Pricing
Not listed
Official monthly price not confirmed
- API
- Fact API and CiteSig JavaScript/Python verifier implementations.
DeepInquiry
● Identity checkedAI grounding infrastructure · Official vendor documentation reviewed 2026-10-07
DeepInquiry supplies a fact corpus for RAG systems and agents, with grouped source links, verification tiers and signed attestations. Its API returns the claim, provenance and a CiteSig Ed25519 signature so an application can inspect the evidence and verify that the record has not changed.
- Category
- AI grounding infrastructure
- Free access
- API Free tier advertises five hundred requests/month.
- API access
- Fact API and CiteSig JavaScript/Python verifier implementations.
Is DeepInquiry right for you?
A good fit for
Developers grounding answers in an inspectable fact corpus rather than accepting unsupported generated claims.
Before you choose
A valid signature proves record integrity, not factual truth. Different websites can trace to one underlying study, and the independence_score measures mapped website/parent-company and source-kind differences rather than complete independence. Verify important claims at original sources.
Keep source evidence beside the answer
Request a relevant fact, inspect original sources and preserve its provenance and signature with the record. Verify the attestation against the public signer identity, then independently assess whether the source supports the claim before an application cites it.
API usage and epistemic limits
The homepage lists a five-hundred-request monthly free tier but no reviewed paid amount. The corpus is upstream evidence rather than a guarantee that downstream AI answers are correct. Website grouping and cryptographic integrity should remain separate from source independence and factual verification.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Provenance | Grouped sources, group counts and gold/silver/bronze tiers. | Facts sourced | 2026-10-07 |
| Integrity | Ed25519 signature covers claim, sources and issuance time. | Facts sourced | 2026-10-07 |
| Corpus | Fact corpus for RAG/agent/grounded interfaces rather than an evaluator of private data. | Facts sourced | 2026-10-07 |
| Free quota | Five hundred API requests per month. | Facts sourced | 2026-10-07 |
Understand the total cost
DeepInquiry pricing & plans
Alternatives to DeepInquiry
View all ↗
Vedika APIVedika is an astrology intelligence API for birth charts, natural-language answers, voice guidance, compatibility, PDF reports, MCP tools, and SDKs spanning Vedic, Western, and KP systems. The homepage demo shows computed ephemeris context, evidence paths, and subscription wallet plans for production integrations.
Explore tool
Supermemorysupermemory provides memory and continual-learning infrastructure for AI agents, including storage, retrieval, connectors, and team billing through a credit-based console. Developers use it to keep long-lived context across chats, documents, and production workloads.
Explore tool
ConsensusConsensus is an AI academic search engine over peer-reviewed literature. It supports paper search plus Pro and Deep modes that synthesize evidence, study snapshots, and collections, with optional API and MCP access on paid tiers for students, clinicians, and researchers.
Explore toolThe practical questions
Frequently asked questions
Does a signature prove the fact is true?
No. It verifies the signed record’s integrity and signer, not the truth of its content.
Are two websites always independent evidence?
No. The official site explicitly warns they can trace to one study.
What is DeepInquiry used for?
DeepInquiry supplies a fact corpus for RAG systems and agents, with grouped source links, verification tiers and signed attestations. Its API returns the claim, provenance and a CiteSig Ed25519 signature so an application can inspect the evidence and verify that the record has not changed.
Does DeepInquiry have a free plan?
API Free tier advertises five hundred requests/month.. This record does not confirm an ongoing free plan.
How much does DeepInquiry cost?
A listed monthly price has not been confirmed. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use DeepInquiry through an API?
Fact API and CiteSig JavaScript/Python verifier implementations.. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
A valid signature proves record integrity, not factual truth. Different websites can trace to one underlying study, and the independence_score measures mapped website/parent-company and source-kind differences rather than complete independence. Verify important claims at original sources.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Official product documentation
Vendor website reviewed for current workflow and limitations; no application test performed.
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.