InvoiceIn vs MentionsAPI

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

InvoiceIn compared with MentionsAPI
Detail	InvoiceIn	MentionsAPI
What it does	One stateless endpoint for every e-invoice format your business receives	Brand visibility API for ChatGPT, Claude, Gemini, and Perplexity
Stage	MVP	Startup
Founded	Not given	2026
Based in	Not given	Not given
Pricing model	Not given	Not given
Pricing	Free tier: 100 invoices for 30 days (no card required). Starter: €29 for 250 invoices. Growth: €99 for 1,000 invoices. Scale: €399 for 5,000 invoices. Paid credits never expire. Demo quota: 20 invoices per IP per day without a key.	Free: 300 credits on signup (no card required). Monthly: $5/mo for 1,000 credits. Annual: $54/yr for 12,000 credits. Per-call costs range from 5 credits (cached quick checks) to 165 credits (all_live mode). Top-up packs available at $4.00 per 1k credits (monthly) or $3.00 per 1k (annual).
Key features	Processed in memory with no storage, no documents written to disk On-premise Docker deployment option	Query ChatGPT, Claude, Gemini, and Perplexity in parallel via one endpoint Structured brand mention extraction with rank, sentiment, and surrounding context Citation extraction with canonical URL resolution and deduplication Webhook delivery for scheduled monitor runs MCP-native integration with Claude Desktop and Cursor Reduced pricing for cached queries with cache_bypass option for fresh results Per-key rate limits and partial-success fallbacks on provider degradation Normalized response schema across all providers Credit-based pricing with 300 free credits on signup
What makes it different	Processes invoices in memory with zero storage, addressing data privacy and compliance requirements Plain-language validation hints that business users can forward directly to suppliers Works with any invoice delivery method without requiring Peppol access point setup	One unified API replaces four separate SDKs for ChatGPT, Claude, Gemini, and Perplexity Covers both official APIs and real-time UI scraping across 8 AI search surfaces
Community votes	0	0
DR (Domain Rating by Ahrefs)	2 +1 (up) since last check	4 −1 (down) since last check
Trust Flow (Majestic)	2	4
Citation Flow (Majestic)	24	24
Referring domains (Majestic)	27	37

5 details filled in for both companies.

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