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Kie.ai vs Fax for Agents

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

Kie.ai compared with Fax for Agents
Detail Kie.aiFax for Agents logo Fax for Agents
What it doesOne API for all the best AI models A fax API and MCP server for AI agents to send and receive faxes with receipts
StageNot given Not given
FoundedNot given 2023
Based inUS US
Pricing modelPaid Paid
PricingImage generation from $0.03 per image (GPT Image 2.5 1K), video generation from $0.012 per second (Grok Imagine Video 1.5 480p), LLM chat from $0.225 per million tokens input (Gemini 3.8 Flash), audio from $0.06 per request (Suno V6), with no monthly fees and no charges for failed generations. $0.039 per page sent, $0.019 per page received, $2 per fax number per month, $10 minimum wallet top-up, optional Agent workspace $19 per month, sandbox free. Prices as of 2026-10-28.
Key features
  • Unified API documentation and interface across all models
  • Interactive playground to test models before coding
  • Transparent pricing with per-model costs
  • Pay-as-you-go credits with no expiration
  • Private VIP support channel on Discord or Telegram
  • Document preparation with PDF, image and text rendering
  • Price quotes bound to document, destination and sender
  • Authorization by person or delegated policy
  • Bounded retries with circuit breaker per route
  • Private inbox for received faxes with signed URLs
  • Idempotent API calls with Idempotency-Key header
  • Signed webhooks with event IDs
  • Sandbox for free testing before production
  • Document retention with 30-day default and deletion option
What makes it different
  • Unified API for multiple AI model providers without rebuilding integrations
  • Pricing up to 88% lower than official APIs
  • Zero-risk billing with no charges for failed generations
  • Access latest cutting-edge AI models in one place
  • Every fax send produces a receipt with provider evidence of delivery
  • Agents cannot exceed their own permissions or budget limits
  • International fax coverage to 213 destinations with transparent pricing
  • MCP server with 15 tools for seamless agent integration
  • Per-page pricing with no minimum subscription requirement
Community votes00
DR (Domain Rating by Ahrefs)75 +1 (up) since last check22 +2 (up) since last check
Trust Flow (Majestic)270
Citation Flow (Majestic)480
Referring domains (Majestic)20050

6 details filled in for both companies.

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