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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 | Krea | 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 | 71/100 1024×1024 (PNG · 2.0x Generative Enhance) · Historical description; output not attached | Active task |
| Object removal | Not tested in topic | 91/100 2048×2048 (Native full-resolution watermark-free PNG) · Historical description; output not attached | Compare in task topic → |
| Image generation | Not tested in topic | 93/100 2048 × 2048 · PNG | 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 | Krea AI (Krea Enhance) Image upscaling 71/100 Seven-aspect task score Free compute can enhance textures, but login, repeated onboarding promotions and a long queue add friction; rewritten small text limits fidelity-sensitive work. Tested export 1024×1024 (PNG · 2.0x Generative Enhance) · Historical description; output not attached Historical test · 2026-10-16 |
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| 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 ↗ | Individual web plans and default Business 80k volume; excludes API and other business volumes · 2026-10-20 Plan · source date Monthly / one-time Annual bill / period Quota & limits Basic2026-10-20 ↗ USD 9/month USD 63/year Monthly 5,000 general compute units/month; not removal counts Annual 5,000 general compute units/month Observed first-year promotion USD 63; then USD 84/year until cancelled Rules [1]Pro2026-10-20 ↗ USD 35/month USD 252/year Monthly 20,000 general compute units/month; not removal counts Annual 20,000 general compute units/month Observed first-year promotion USD 252; then USD 336/year until cancelled Rules [1]Max 60k2026-10-20 ↗ USD 105/month USD 756/year Monthly 60,000 general compute units/month; not removal counts Annual 60,000 general compute units/month Observed first-year promotion USD 756; then USD 1008/year until cancelled Rules [1]Business 80k2026-10-20 ↗ USD 200/month USD 1,920/year Monthly 80,000 general compute units/month; not removal counts Annual 80,000 general compute units/month Max 40k2026-10-20 ↗ USD 70/month USD 504/year Annual 40,000 general compute units/month Observed first-year promotion USD 504; then USD 672/year until cancelled Rules [1]Monthly 40,000 general compute units/month Max 80k2026-10-20 ↗ USD 135/month USD 972/year Annual 80,000 general compute units/month Observed first-year promotion USD 972; then USD 1296/year until cancelled Rules [1]Monthly 80,000 general compute units/month Max 100k2026-10-20 ↗ USD 165/month USD 1,188/year Annual 100,000 general compute units/month Observed first-year promotion USD 1188; then USD 1584/year until cancelled Rules [1]Monthly 100,000 general compute units/month Enterprise2026-10-20 ↗ Contact sales Quoted Quoted Custom enterprise support, security and administration 16 plan / billing-period records, all listed; — means that period is not recorded. All 10 previously missing amounts are confirmed in USD checkout summaries. Individual annual offers separate first-year and renewal charges; Business 80k is $1,920/year. Max monthly purchase paths show additional annual offers whose checkout totals were not independently confirmed; these are not merged with the default annual offer. Per-removal compute cost and extra top-up pricing are not separately specified in the verified plans/checkouts. Other Business volumes are outside scope. Verification has gaps; unknown prices and quotas are not inferred. Cancellation, sources & verification recordSelf-serve cancellation in account settings Official plans and usage terms ↗ · 2026-10-20 Capture 1 ↗ USD checkout summaries reached from official pricing ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ · Capture 4 ↗ · Capture 5 ↗ · Capture 6 ↗ · Capture 7 ↗ · Capture 8 ↗ · Capture 9 ↗ · Capture 10 ↗ Additional annual offers on monthly purchase paths ↗ · 2026-10-20 Capture 1 ↗ · Capture 2 ↗ · Capture 3 ↗ |
| Free & trial allowance on the test date | Completely free, no quota limits, pure client-side WebGPU processing | 50 free daily compute credits (~6–7 free 2x enhancements/day); free tier is capped at 1 concurrent job with queue wait, and 8x/16x require a paid subscription |
| Cancellation & refunds | Not verified | Self-serve cancellation in account settings |
| Disclosure of costs & limits | Page transparently outlines all resizing and AI enhancement parameters | Prompts signup upon clicking Generate and clearly marks 8x/16x as 'For paid users only' inside the workspace |
| 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. | Enhanced texture but rewrote small text in this fixture; take care when exact lettering matters. |
| 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. | PSNR=23.64dB · SSIM=0.7771 (2x 1024×1024 unwatermarked PNG); high hf_ratio=0.6486 makes the 'REALTEST 2026' wooden sign and brass robot look ultra-detailed, but because Krea uses a generative diffusion model (realisticv51, denoising=0.4), the small bottom-right calibration plate text 'REALTEST 2048px GT' is hallucinated into 'AFAL I SOT 20110pss OT' (plate_psnr=14.30dB). |
| Suitable uses · historical assessment | Users needing no-login, 100% private, client-side AI image super-resolution without uploading files to external servers | Creators seeking 'Generative Upscaling' to hallucinate rich surface textures on AI art or portraits—not suitable for document or micro-text fidelity |
| Result & output evidence | No native output obtained; the preview does not establish final export quality. | |
| Delivery capabilities | ||
| Recorded export specifications | 2048 × 2048 · PNG · No watermark in test | 1024×1024 (PNG · 2.0x Generative Enhance) · Historical description; output not attached · Check watermark record No native output is attached; check the evidence for specification and watermark claims. |
| Historical specification note · not an official maximum | 2048 × 2048 (PNG · 4.0x full-resolution direct export) | 1024×1024 (2.0x · Free tier unlocks 2x/4x; 8x/16x require paid plan) |
| Watermark observation | No watermark | 100% Watermark-Free |
| Batch & API | Supports arbitrary batch processing limited only by local device memory and GPU VRAM | Paid plans unlock multi-job concurrency and up to 16x upscaling; free tier is limited to 1 concurrent job |
| Recorded free-tier dimensions | 2048 × 2048 | Not verified |
| Attached file dimensions | 2048 × 2048 · PNG | Not verified |
| Speed & reliability | ||
| Timing observation | Recorded local processing time: 60.34s · End-to-end reference: 60.34s | Network-observed server wait: 8.61s · End-to-end reference: 87.81s |
| Date & fixture | 2026-11-01 · anchor_upscale_v1 · US-West (California, AS2914) | 2026-10-16 · 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 | Clicking Generate on the landing page requires Google / Apple / Email sign-in |
| Manual adjustment | Not verified | Not verified |
| Interaction observations | Not verified | Post-signup `/onboarding` triggers two consecutive discount retention modals when clicking 'Skip': first a 1-hour countdown modal ('Take Pro at 40% off instead... Offer ends in 0h:59m:57s'), followed by a 'Final chance — Are you sure you don't want this offer?' modal when dismissing the bottom bar (Screenshot ④); once inside `/enhancer`, the workspace is clean. |
| Background & reputation | ||
| Service lifecycle notice | Not verified | Not verified |
| Operator | BIRME Project | Krea AI Inc. (San Francisco, CA, USA) |
| Recorded origin | United Kingdom | San Francisco, USA |
| Domain history record | Founded in 2013 | 2022–Present |
| Background & reputation assessment | Not verified | Developed by Krea AI Inc. (San Francisco, CA, founded by Victor Perez & Diego Rodriguez, backed by Andreessen Horowitz & Bain Capital Ventures). |
| External reputation record | Continuously operating for 13 years since 2013, renowned for pure client-side privacy. | Not verified |
| Engineering & privacy | ||
| Processing location | On-device processing | Uploaded for cloud processing |
| Third-party tracking record | Google Analytics | Not verified |
| Engineering & privacy assessment | Not verified | Uses an async GPU job queue (`/api/job-status` reports exact `time_in_gen_server: 8.61s` and `t_inference: 4.57s`) with encrypted CDN delivery (`gen.krea.ai`). |
| Retention statement | This flow runs locally; post-close deletion not independently verified | Explicit retention period unconfirmed; inspect policy record |
| Evaluation basis | ||
| Pricing transparency | 24 / 35 Landing page `/apps/enhance` (Screenshot ①) provides an upload box and 1x/2x/4x/8x buttons, prompting 'Sign up for 50 free credits daily' when clicking Generate; after free Google sign-in, Krea grants daily free compute credits and exports 100% watermark-free 1024×1024 (2x) PNGs (8x and 16x are clearly labeled 'For paid users only'). | |
| Interaction restraint | 18 / 30 Post-signup `/onboarding` triggers two consecutive discount retention modals when clicking 'Skip': first a 1-hour countdown modal ('Take Pro at 40% off instead... Offer ends in 0h:59m:57s'), followed by a 'Final chance — Are you sure you don't want this offer?' modal when dismissing the bottom bar (Screenshot ④); once inside `/enhancer`, the workspace is clean. | |
| Background & reputation | 19 / 20 Developed by Krea AI Inc. (San Francisco, CA, founded by Victor Perez & Diego Rodriguez, backed by Andreessen Horowitz & Bain Capital Ventures). | |
| Engineering & privacy | 13 / 15 Uses an async GPU job queue (`/api/job-status` reports exact `time_in_gen_server: 8.61s` and `t_inference: 4.57s`) with encrypted CDN delivery (`gen.krea.ai`). | |
| 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 | 45 / 65 PSNR vs 2048px GT: 23.64 dB · SSIM: 0.7771 · Edge Gradient Correlation: 0.4812 · High-Freq Sharpness Ratio: 0.6486 · Calibration Plate PSNR: 14.3 dB |
| Deliverable specifications | 20 / 20 Clean unwatermarked export (8/8); Free scale factor: 4x (2048 × 2048 (PNG · 4.0x full-resolution direct export)) | 15 / 20 No free unwatermarked export (0/8); Free scale factor: 2x (1024×1024 (2.0x · Free tier unlocks 2x/4x; 8x/16x require paid plan)) |
| 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) | 9.5 / 15 Network-observed server wait: 8.61s (API mode: async_poll; end-to-end 87.81s shown for reference only, never penalized) |
