Aletheia vs Nansen
Nansen is a blockchain analytics platform focused heavily on DeFi, NFTs, and "smart money" tracking. With pricing starting around $150/month for basic access and scaling to $1500+/month for pro features, it is a premium tool for traders and analysts.
How to read this page. Nansen is a capable product and is the better choice for several situations, which are listed explicitly below. Pricing figures are publicly listed at the time of writing and are approximate. The criticisms noted are documented in public reviews and industry commentary, not our opinion of the vendor.
Why people look for a Nansen alternative
Built for traders, not investigators
Nansen is designed to find alpha, track token flows, and analyze DeFi protocols. It is not built for forensic investigation, tracking stolen funds, or producing evidence.
High cost for non-trading use cases
If you are not using Nansen to generate trading returns, the steep monthly cost is hard to justify just for wallet labels and basic tracing.
No evidence or methodology handling
There is no concept of a case file, chain of custody, or hashed exhibits — everything is geared towards immediate market insight.
Side by side
| Dimension | Nansen | Aletheia |
|---|---|---|
| Primary focus | DeFi, NFTs, trading alpha | Forensics, fraud, OSINT |
| Pricing | ~$150 to $1,500+ / month | Accessible tiers for investigators |
| Wallet labels | Extensive smart money/DeFi labels | Sanctions and threat actors |
| DeFi analytics | Industry leading | Basic token transfers |
| Identity OSINT | None | Integrated identity and domain OSINT |
| Evidence management | None | Hashed exhibits, methodology appendix |
| Cross-case correlation | None | Persistent global entity graph |
| Autonomous agent | No | Yes, for investigation planning |
Choose Nansen if
- •You are a crypto trader looking for smart money movements and alpha.
- •You need deep analytics on specific DeFi protocols or NFT collections.
- •You want to track broad token flow trends.
Choose Aletheia if
- •You are investigating fraud, scams, or stolen funds.
- •You need to correlate on-chain activity with real-world identities.
- •You need to generate reports with chain of custody.
- •You want an investigation-focused tool at a lower price point.
Try it before you decide
Screen a wallet against OFAC sanctions or grade a domain's attack surface — free, no signup, no card.