Keen vs Let's Enhance: AI Upscaler Comparison 2026
Compare Keen and Let's Enhance for AI image upscaling. Pricing, features, API access, and agent support compared side by side.
Quick Comparison
| Feature | Keen | Let's Enhance |
|---|---|---|
| Free Tier | 5 images (lifetime) | 10 images (with watermark) |
| Paid Plans | $9/mo (100 img) / $29/mo (800 img) | $12/mo (100 img) / $24/mo (300 img) |
| API | ✅ REST API (Ultra plan) | ✅ API available |
| MCP Server | ✅ (@keenimg/mcp) | ❌ |
| Agent Payments | ✅ x402 (USDC) | ❌ |
| Max Upscale | 4x | 16x |
| Watermark (Free) | ❌ No watermark | ✅ Watermarked |
| Model | SeedVR2 | Proprietary |
Pricing
Let's Enhance charges $12/month for 100 images or $24/month for 300 images. Their free tier watermarks your output.
Keen charges $9/month for 100 images or $29/month for 800 images. The free tier gives you 5 clean images with no watermark.
At the 100-image level, Keen is $3/month cheaper. At higher volumes, Keen's Ultra plan gives you 800 images for $29 vs Let's Enhance's 300 for $24 — significantly better value per image ($0.036 vs $0.08).
What Keen Does That Let's Enhance Doesn't
MCP Server — Keen has a published MCP server (npx @keenimg/mcp) that works with Claude, Cursor, Windsurf, and any MCP-compatible AI tool. Let's Enhance has no agent integration.
x402 Payments — AI agents can pay per-image with USDC on Base. No account, no API key, no human in the loop. Let's Enhance requires traditional account setup.
No watermark on free tier — Let's Enhance watermarks free images. Keen gives you 5 clean images to evaluate quality before you pay.
What Let's Enhance Does Better
Higher upscale factors — Let's Enhance supports up to 16x upscaling. Keen maxes at 4x. For most use cases 4x is sufficient, but if you need extreme enlargement, Let's Enhance has the edge.
More processing modes — Let's Enhance offers Smart Enhance, Magic, Boring (for illustrations), and tone enhancement. Keen focuses on one thing: SeedVR2-powered upscaling done well.
Bottom Line
For developers, AI agent builders, and users who want clean output at a better price, Keen wins. For users who need extreme upscaling factors (8x-16x) or multiple enhancement modes, Let's Enhance has more options. Both produce high-quality results.