Best Sanctions Screening APIs for Startups — 2026 Comparison

If you are building a fintech, crypto exchange, neobank, or any product that handles money, you need sanctions screening. The question is which provider to choose. The market ranges from enterprise platforms costing tens of thousands per year to open-source tools you can self-host for free. The right choice depends on your stage, budget, and technical requirements.

We evaluated seven sanctions screening providers across five dimensions that matter most to startups: matching quality, list coverage, pricing, developer experience, and time to production. This is not a feature matrix from a marketing team. It is a technical comparison based on documentation, published benchmarks, and hands-on API testing.

What to look for in a sanctions screening API

Before diving into individual providers, here are the criteria that should drive your evaluation:

Matching quality. This is the single most important factor. A screening API that misses sanctioned entities (low recall) creates compliance risk. One that flags too many innocent customers (low precision) creates operational overhead and damages the user experience. Ask for published benchmark numbers — F1 score, precision, and recall. If a provider cannot share these, treat that as a yellow flag.

List coverage. At minimum, you need OFAC SDN. Most businesses also need UN, EU, and UK sanctions lists. Some providers also cover PEP (Politically Exposed Persons) lists, adverse media, and country-specific watchlists. More coverage is generally better, but only if the matching quality remains high across all lists.

Pricing. Sanctions screening costs typically follow one of three models: per-screen pricing (pay for each API call), monthly subscription (fixed number of screens per month), or enterprise contracts (annual commitment with custom pricing). For startups, per-screen pricing with a free tier is ideal because costs scale with your actual usage.

Developer experience. How long does it take to go from signup to your first API call? Is there self-serve access or do you need to schedule a sales call? Is the documentation clear and complete? Are there SDKs for your language? These factors determine whether integration takes an afternoon or a quarter.

Time to production. Some providers offer instant API key generation and clear REST endpoints. Others require contract negotiations, onboarding calls, and custom integration work. For startups that need to ship compliance features quickly, self-serve access is critical.

Overview comparison

Here is a high-level comparison of all seven providers. Detailed reviews follow below.

* OpenSanctions is free for non-commercial use. Commercial use requires a paid license.

1. Verifex

Pricing: $0.006 per screen. Free tier: 100 screens/month. No credit card required for signup.

Lists: OFAC SDN, OFAC Consolidated, UN Security Council, EU Consolidated List, UK HM Treasury, Swiss SECO, Wikidata PEP, and additional watchlists. 8 lists total, covering the major global sanctions regimes.

Matching: Multi-algorithm pipeline combining exact match, Levenshtein fuzzy matching, Soundex phonetic matching, and IDF-weighted token scoring. AI-enhanced verification for ambiguous matches using an LLM cascade. Published benchmark: F1 90.1%, precision 82.5%, recall 99.5%. These numbers are independently verifiable on the Verifex benchmark page.

Developer experience: Self-serve signup, API key in under a minute. REST API with clear JSON request/response format. Python SDK available on PyPI. Documentation covers all endpoints with code examples. Response time under 50ms for standard screens.

Strengths: Lowest per-screen cost in the market. Published, verifiable benchmark — the only provider that shares F1, precision, and recall numbers openly. Excellent developer experience with instant API access. AI verification layer that most competitors lack.

Limitations: Newer entrant compared to established players. 8 lists is sufficient for most startups but less than the 75+ offered by some competitors. No SOC 2 certification yet (in progress).

2. sanctions.io

Pricing: Starts at approximately $0.16 per screen on their pay-as-you-go plan. Monthly plans start at $300/month. No free tier.

Lists: 75+ sanctions, PEP, and watchlists from jurisdictions worldwide. This is one of the broadest coverages in the market, including country-specific lists that most providers do not offer.

Matching: NLP-based matching engine with support for multiple scripts and transliterations. Configurable matching thresholds. Sanctions.io has a reputation for solid matching quality, though they do not publish benchmark numbers comparable to Verifex's.

Developer experience: Self-serve signup available. REST API with good documentation. Supports batch screening. The API design is clean and follows modern conventions.

Strengths: Broadest list coverage in this comparison. NLP-based matching handles complex name variations well. Established track record with regulated financial institutions.

Limitations: Significantly more expensive per screen than Verifex or dilisense. No free tier for testing. No published benchmark numbers for independent verification. The price point is challenging for early-stage startups processing high volumes.

3. ComplyAdvantage

Pricing: Starts at $99/month for basic plans. Enterprise pricing requires a sales conversation. Annual contracts are typical.

Lists: Extensive coverage including sanctions, PEP, adverse media, and state-owned enterprises. ComplyAdvantage builds proprietary risk profiles by aggregating data from hundreds of sources, not just official sanctions lists.

Matching: Machine learning-based entity resolution. ComplyAdvantage was one of the first providers to apply AI to sanctions screening at scale. Their matching is considered strong, particularly for entity resolution across multiple data sources.

Developer experience: Requires a sales conversation to get API access. Documentation is available but gated. Integration typically involves a dedicated onboarding process. They provide SDKs and have a dashboard for managing alerts.

Strengths: Comprehensive risk data beyond just sanctions lists. Strong adverse media coverage. SOC 2 Type II certified. Trusted by major banks and financial institutions. Robust case management and alert workflow tooling.

Limitations: Enterprise-oriented pricing and sales process. Not self-serve — you cannot get an API key without talking to sales. Overkill for early-stage startups that just need sanctions screening. Annual contracts reduce flexibility. No published benchmark numbers.

4. dilisense

Pricing: Approximately EUR 0.01 per screen. Monthly plans available. Free trial with limited screens.

Lists: Multi-source coverage including global sanctions, PEP lists, and adverse media. dilisense aggregates data from official government sources and proprietary databases.

Matching: Fuzzy matching with configurable thresholds. Supports multiple name formats and transliterations. The matching engine handles name order variations and partial matches.

Developer experience: Self-serve signup available. REST API with decent documentation. Based in the EU, which may be advantageous for European companies with data residency requirements.

Strengths: Competitive per-screen pricing. EU-based with European data handling. Includes adverse media screening alongside sanctions. Good option for companies that need PEP and adverse media in addition to sanctions.

Limitations: Less well-known than ComplyAdvantage or sanctions.io. Documentation is less comprehensive than Verifex or sanctions.io. No published benchmark numbers. Limited community and ecosystem compared to larger providers.

5. NameScan

Pricing: $0.55 per check on pay-as-you-go. Subscription plans reduce the per-check cost. Free trial available.

Lists: Broad PEP coverage with sanctions and watchlist screening. NameScan emphasizes its PEP database, which covers politically exposed persons across many jurisdictions.

Matching: Supports fuzzy matching with configurable sensitivity. Handles name variations and common transliterations. The matching approach is functional but less technically sophisticated than IDF-weighted or AI-enhanced approaches.

Developer experience: Self-serve signup. REST API available. Documentation is adequate but not as developer-focused as newer providers. The primary interface is a web dashboard rather than an API-first design.

Strengths: Strong PEP coverage if that is a primary requirement. Pay-as-you-go pricing with no minimum commitment. Established provider with a track record in the compliance space.

Limitations: Expensive at $0.55 per check — nearly 100x the cost of Verifex. Dashboard-first rather than API-first design. Less suitable for high-volume automated screening. No published matching benchmarks.

6. SanctScan

Pricing: $29/month for up to 1,000 screens. Higher tiers available. Free trial.

Lists: 5 major sanctions lists: OFAC, UN, EU, UK, and Australian DFAT. Focused on the core lists rather than attempting broad coverage.

Matching: Basic fuzzy matching. Suitable for standard screening needs. Less sophisticated than providers that use IDF weighting, phonetic algorithms, or AI verification.

Developer experience: Self-serve signup. Simple REST API. Documentation is straightforward. The product is designed to be lightweight and easy to integrate, without the complexity of enterprise platforms.

Strengths: Simple, predictable pricing. Easy to understand and integrate. Good for businesses with low screening volumes that just need basic sanctions coverage. No per-screen cost surprises.

Limitations: Only 5 lists — no PEP coverage. Basic matching without advanced techniques like IDF weighting or AI verification. The $29/month base price is more expensive per screen than Verifex for volumes above ~4,800 screens/month. Not suitable for high-volume or high-accuracy requirements.

7. OpenSanctions

Pricing: Free for non-commercial use. Commercial licenses available at various price points depending on company size and usage.

Lists: Aggregates data from hundreds of official sources worldwide, including sanctions lists, PEP registries, and public interest datasets. One of the most comprehensive data aggregations available.

Matching: OpenSanctions provides data, not a hosted screening API. They publish a matching tool called "yente" that you can self-host, but you are responsible for deploying, scaling, and maintaining it. Matching quality depends on your configuration and infrastructure.

Developer experience: Excellent data documentation and transparent methodology. However, this is a data-first product, not an API-first product. Getting to production requires significant engineering work: deploying the matching service, configuring matching parameters, handling list updates, building audit logging, and managing infrastructure.

Strengths: Free for non-commercial use. Most comprehensive data aggregation in this comparison. Fully transparent methodology and open source. Excellent for research, analysis, and organizations with engineering teams that want full control over their screening infrastructure.

Limitations: Not a hosted API — requires significant self-hosting work. You are responsible for uptime, scaling, and maintenance. Commercial licensing adds cost and complexity. No support SLA. Not suitable for startups that need to ship sanctions screening quickly without dedicated infrastructure engineering.

Recommendation by use case

Here is our honest recommendation based on different startup profiles:

Early-stage fintech or crypto startup. Start with Verifex. The free tier lets you build and test without cost. At $0.006/screen in production, costs stay low as you scale. The published benchmark gives you confidence in matching quality, and self-serve access means you can ship compliance features this week, not next quarter.

Enterprise financial institution. ComplyAdvantage is the established choice for banks and large fintechs that need comprehensive risk data (adverse media, SOE screening), SOC 2 compliance, and dedicated support. The higher price point is justified by the breadth of data and enterprise-grade infrastructure.

Company needing 75+ country-specific lists. If you operate in many jurisdictions and need to screen against country-specific watchlists beyond the major four, sanctions.io has the broadest list coverage. Be prepared for higher per-screen costs.

EU-based company with PEP and adverse media needs. dilisense offers competitive pricing with European data handling. Good if you need PEP screening alongside sanctions and want an EU-based provider for data residency reasons.

Research or non-commercial project. OpenSanctions is the clear choice. The data is comprehensive, well-documented, and free for non-commercial use. If you have the engineering capacity to self-host the matching infrastructure, it is an excellent foundation.

Low-volume business with simple needs. SanctScan at $29/month is the simplest option if you process fewer than 1,000 screens per month and just need basic sanctions coverage. No per-screen pricing to worry about.

PEP-heavy compliance program. NameScan has strong PEP coverage if politically exposed person screening is your primary requirement. However, the $0.55/check cost makes it expensive for high-volume sanctions screening.

How we evaluated

This comparison is based on publicly available information from each provider's website, documentation, and pricing pages as of April 2026. We tested API access, signup flow, and documentation quality for each provider that offers self-serve access. For providers that require sales conversations (ComplyAdvantage), we relied on publicly available pricing data and customer reviews.

Verifex is our product, so we want to be transparent about that bias. We have tried to present each provider's genuine strengths and limitations fairly. For a more detailed head-to-head comparison, see our Verifex vs sanctions.io and Verifex vs ComplyAdvantage comparison pages.

Summary

The sanctions screening API market in 2026 offers real choices at every price point. Enterprise platforms like ComplyAdvantage serve large institutions with comprehensive risk data and SOC 2 compliance. Broad-coverage APIs like sanctions.io offer 75+ lists for multi-jurisdictional needs. Developer-first APIs like Verifex make it possible for a two-person startup to ship production-grade sanctions screening in an afternoon at $0.006 per screen.

The most important selection criterion is matching quality — specifically the balance between precision (minimizing false positives) and recall (catching all true matches). Ask for published benchmarks. Test with real names from your customer base. And remember that the cheapest option per screen might be the most expensive overall if it generates ten times more false positives for your compliance team to review.

For most startups, we recommend starting with a provider that offers self-serve access, a free tier, transparent pricing, and published accuracy metrics. Scale from there as your compliance needs mature.