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Test scope & comparison notes
These are recorded facts, not a unified ranking. Tested tiers and scope are not consistently recorded. Read pricing with its date and timing with its conditions. Privacy observations reflect visible flows and statements, not a security audit.
Cross-task capability coverage across selected products
Each product is scored independently per task edge; switch tasks below while keeping shared products selected| Task edge | birme.net | seaart.ai | Switch / compare |
|---|---|---|---|
| Background removal | Not tested in topic | 84/100 2048 × 2048 · PNG | Compare in task topic → |
| Image compression | 83/100 512 × 512 · PNG | Not tested in topic | Compare in task topic → |
| Image upscaling | 94/100 2048 × 2048 · PNG | 79/100 1024 × 1024 · PNG | Active task |
| Object removal | Not tested in topic | 86/100 2048 × 2048 · PNG | Compare in task topic → |
| Image generation | Not tested in topic | 83/100 WEBP · Output attached | Compare in task topic → |
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Browse this task →| Criterion | BIRME Image upscaling 94/100 Seven-aspect task score BIRME is one of the rare free tools that runs AI super-resolution entirely client-side via in-browser WebGPU/WASM without requiring an account. In our live test, it upscaled a 1024px input to a full 2048x2048 watermark-free native PNG in 60.3s, achieving an edge correlation of 0.6668 that significantly outperforms traditional bicubic interpolation while providing uncompromising zero-upload privacy. Tested export 2048 × 2048 · PNG Historical test · 2026-11-01 | SeaArt (AI Image Upscaler) Image upscaling 79/100 Seven-aspect task score SeaArt AI Upscaler offers Precise and Creative modes, delivering a clean 1024x1024 watermark-free image (PSNR 26.47 dB, SSIM 0.8810) at 2K. While inference and queue latency took ~80s, structural fidelity and text preservation remain solid, consuming 40 daily free credits. Tested export 1024 × 1024 · PNG Historical test · 2026-11-04 |
|---|---|---|
| Pricing & rules | ||
| Pricing plans | BIRME 100% free client-side batch image processing and compression · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free2026-11-01 ↗ Free Free Free Completely free without login; unlimited batch image processing constrained only by client memory Smart crop, format conversion (JPG/PNG/WebP/AVIF), quality compression, watermark, AI background removal and upscaling；Pure client-side execution; very large batches may consume significant browser memory；Permanently free, no renewal；Perpetual access 1 plan / billing-period records, all listed; — means that period is not recorded. All batch resizing, compression, AI background removal, and upscaling are 100% free with voluntary donation support and zero paid plans. Cancellation, sources & verification recordCancellation and refund terms unverified BIRME Official Studio ↗ · 2026-11-01 Capture 1 ↗ | SeaArt.ai Stamina and VIP subscription model · 2026-11-01 Plan · source date Monthly / one-time Annual bill / period Quota & limits Free Tier (Daily Stamina)2026-11-01 ↗ Free Free Free ~150 daily Stamina refreshed every 24 hours Base image generation, upscaling, background removal, and community models；Unused stamina resets daily; standard queue; excludes custom LoRA training；Refreshes daily, no renewal；Perpetual access Standard VIP2026-11-01 ↗ Monthly price not verified — Monthly Higher daily Stamina allowance, bonus coins, and fast-track queues Fast-track generation, concurrent tasks, and commercial licensing；Pricing visible inside account store (typically approx $9.99/mo)；Auto-renews monthly；Active during billing month 2 plan / billing-period records, all listed; — means that period is not recorded. Uses daily regenerating Stamina (~150/day free) plus persistent Coins; paid plans include Standard VIP (~$9.99/mo), Pro (~$29.99/mo), and SVIP tiers detailed within account portals. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordCancellation and refund terms unverified SeaArt AI Official Homepage and Community ↗ · 2026-11-01 Capture 1 ↗ |
| Free & trial allowance on the test date | Completely free, no quota limits, pure client-side WebGPU processing | Daily login grants Stamina; 2K upscale consumes 40 computing points |
| Cancellation & refunds | Not verified | Not verified |
| Disclosure of costs & limits | Page transparently outlines all resizing and AI enhancement parameters | Credit consumption disclosed upfront before processing |
| Task quality | ||
| Measured fixture results | Tested scale: 4× | Tested scale: 2× |
| Fixture findings | Under the 2048px standard anchor, BIRME's local WebGPU super-resolution outputs a 2048x2048 native PNG with 26.97 dB PSNR, 0.8897 SSIM, 0.6668 edge correlation (+17.9% over bicubic baseline), and 16.08 dB plate PSNR, completing in 60.3s purely offline on the client. | Achieves PSNR 26.47 dB and SSIM 0.8810 under 2K Precise mode, preserving intact REALTEST 2026 text with clean native 1024x1024 watermark-free export. |
| Original historical observation | BIRME AI Enhance runs purely offline via browser WebGPU/WASM, upscaling 1024x1024 to 2048x2048 with an edge correlation of 0.6668, delivering significantly better detail than bicubic interpolation. | Plaque spelling REALTEST 2026 is complete and orderly, brass robot torso and ceramic cup highlights are well-preserved, overall PSNR=26.47 dB, SSIM=0.8810. |
| Suitable uses · historical assessment | Users needing no-login, 100% private, client-side AI image super-resolution without uploading files to external servers | Users needing daily 2K super-resolution enhancement with available free Stamina |
| Result & output evidence | ||
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 1024 × 1024 · PNG · No watermark in test |
| Historical specification note · not an official maximum | 2048 × 2048 (PNG · 4.0x full-resolution direct export) | 1024×1024 (PNG · 2.0x Free Tier) |
| Watermark observation | No watermark | Completely watermark-free |
| Batch & API | Supports arbitrary batch processing limited only by local device memory and GPU VRAM | Supports web interface and API batch calls |
| Recorded free-tier dimensions | 2048 × 2048 | 1024 × 1024 |
| Attached file dimensions | 2048 × 2048 · PNG | 1024 × 1024 · PNG |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 60.34s · End-to-end reference: 60.34s | Network-observed server wait: 80.66s · End-to-end reference: 80.66s |
| Date & fixture | 2026-11-01 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-11-04 · anchor_upscale_v1 · US-West (California, AS2914) |
| Repeated tests & reliability | No standardized repetition count, success rate or variability range is recorded. | No standardized repetition count, success rate or variability range is recorded. |
| Interaction experience | ||
| Account requirements | No login in this test | Account required in this test |
| Sign-in methods | All features available directly without registration or login | Google / Email Login |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Clean dual-mode interface offering Precise and Creative modes across 2K/4K/6K/8K tiers with zero intrusive popups. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | BIRME Project | STAR CLOUD PTE. LTD. (SeaArt) |
| Recorded origin | United Kingdom | Singapore |
| Domain history record | Founded in 2013 | 2023–Present |
| Background & reputation assessment | Not verified | Operated by STAR CLOUD PTE. LTD. (Singapore), with an active community, extensive model ecosystem, and sound compliance policies. |
| External reputation record | Continuously operating for 13 years since 2013, renowned for pure client-side privacy. | Active global AIGC community with millions of creator-published styles and LoRA assets across mobile and web. |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Google Analytics | Google Tag Manager · Cloudflare · Stripe |
| Engineering & privacy assessment | Not verified | Full HTTPS encryption across all endpoints, providing task management and one-click data deletion. |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation basis | ||
| Pricing transparency | 25 / 35 Dual Stamina consumption system clearly labels the 40-credit cost for 2K upscaling (subscription tiers accessible upon login). Transparency is solid. | |
| Interaction restraint | 24 / 30 Clean dual-mode interface offering Precise and Creative modes across 2K/4K/6K/8K tiers with zero intrusive popups. | |
| Background & reputation | 16 / 20 Operated by STAR CLOUD PTE. LTD. (Singapore), with an active community, extensive model ecosystem, and sound compliance policies. | |
| Engineering & privacy | 13.5 / 15 Full HTTPS encryption across all endpoints, providing task management and one-click data deletion. | |
| Task quality | 60.5 / 65 PSNR vs 2048px GT: 26.97 dB · SSIM: 0.8897 · Edge Gradient Correlation: 0.6668 · High-Freq Sharpness Ratio: 0.5048 · Calibration Plate PSNR: 16.08 dB | 55 / 65 PSNR vs 2048px GT: 26.47 dB · SSIM: 0.881 · Edge Gradient Correlation: 0.6014 · High-Freq Sharpness Ratio: 0.4547 · Calibration Plate PSNR: 15.23 dB |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048 × 2048 (PNG · 4.0x full-resolution direct export)) | 18 / 20 No free unwatermarked export (0/8); Free scale factor: 2x (1024×1024 (PNG · 2.0x Free Tier)) |
| Processing speed | 12 / 15 Network-observed server wait: 60.34s (API mode: client_side; end-to-end 60.34s shown for reference only, never penalized) | 6.5 / 15 Network-observed server wait: 80.66s (API mode: async_poll; end-to-end 80.66s shown for reference only, never penalized) |
