Krea 3 ComfyUI Workflow & Open-Weights Guide
Integrate Krea 3 Multi-Reference 2K Editing into ComfyUI or Edit Directly in the Cloud
Looking to run Krea 3 inside ComfyUI? While official open weights (.safetensors) remain on Krea AI’s roadmap, developers and digital artists can already run Krea 3 in ComfyUI pipelines using custom API nodes connecting to OpenRouter (krea/k3-edit). If you don’t have a 24GB VRAM GPU rig, you can [try our browser-based Krea 3 AI image editor](/) with sub-8 second execution and zero local installation.
Inspect What Krea 3 Multi-Reference Edits Produce
Explore real multi-reference visual edits rendered on the Krea 3 (krea/k3-edit) engine, demonstrating surgical pixel locking and lighting transfer.
Vehicle Staging with Outdoor Environmental Relighting
Transfer the car from the first image onto the sunny highway from the second image. Match the bright daylight sun angles and pavement reflections. Keep the car body lines, headlights, and badges 100% unchanged.
Three Core Innovations in Krea 3 Multi-Reference Vision
How Krea 3 solves identity drift, hardware constraints, and spatial composition.
Multi-Reference Spatial Conditioning
Up to 4 Structured Input Slots
Krea 3 replaces vague natural language prompts with indexed image slots (Base, Item, Face, Style). Prompts use explicit spatial references such as "the object from the second image" to control composition with surgical accuracy.
- Dedicated role slots: Base photo, Subject, Likeness, Lighting
- Deterministic spatial indexing without prompt guesswork
- Supports indexed reference chaining up to 4 images
Hardware-Free Sub-8 Second 2K Renders
Zero Local GPU Bottlenecks
Running modern diffusion models locally demands top-tier 24GB VRAM graphics cards ($1,500+) and complex dependency setup. TryKrea3 executes Krea 3 on high-performance cloud clusters in under 8 seconds per 2K render.
- No CUDA errors, Python virtualenv conflicts, or package bloat
- Sub-8s wall-clock latency for fast client iteration
- Works seamlessly on lightweight laptops, tablets, and phones
Deterministic Pixel-Wise Lock
Protect Text, Logos & Likeness
Standard image generators suffer from hallucinations that warp typography and logos. Krea 3 incorporates native pixel locking flags to ensure untouched regions remain 100% bit-exact.
- Keep Text & Logos: Protect packaging labels and brand typography
- Keep Face: Eliminate character likeness drift across photo shoots
- Keep Background: Modify subjects while maintaining set staging
Verified Engine Architecture & Inference Limits
Hardware requirements, API endpoints, and model capabilities.
| Parameter | Specification | Engineering Notes |
|---|---|---|
| API Endpoint Identifier | krea/k3-edit (via OpenRouter) | Official high-throughput editing endpoint |
| Native Output Resolution | 2048px (Native 2K) | Renders full 2K without secondary upscaling passes |
| Supported Aspect Ratios | 7 Ratios (1:1, 4:5, 2:3, 9:16, 4:3, 3:2, 16:9) | Optimized for social media, print, and video production |
| Reference Image Ceiling | Up to 4 Structured Slots | Slots: Base photo, Item, Identity, Lighting/Style |
| Median Latency | Sub-8 seconds (5.8s – 7.2s) | Measured on enterprise cloud GPU clusters |
| Local Hardware Requirement (Weights) | 24GB+ VRAM (NVIDIA RTX 3090 / 4090 / A100) | Cloud workspace requires 0GB local VRAM |
| Open-Weights Status | Roadmap TBA by Krea AI | Currently accessible via API endpoints |
| Pricing Model | $9.90 / 100 Permanent Credits | Never expires, commercial rights included, auto-refund on fail |
Inspect Krea 3 Multi-Reference Edits at Full Fidelity
Compare before and after states to see how Krea 3 transfers lighting and replaces objects without distorting untouched image regions.
Commercial Vehicle Staging
Transfers studio car photography into outdoor mountain environment.
Drag the slider handle to inspect detail retention
Apparel & Fashion Lookbook
Replaces garments while preserving model pose and studio backlighting.
Drag the slider handle to inspect detail retention
ComfyUI Local Setup vs. TryKrea3 Cloud vs. Official Subscription
Evaluate execution speed, hardware requirements, and financial commitments across deployment paths.
| Dimension | TryKrea3 Cloud Editor (This Model) | Local ComfyUI (API) | Official Krea Pro ($35/mo) | Legacy ComfyUI Workflows |
|---|---|---|---|---|
| Hardware Required | Any browser (0GB VRAM) | PC + Python environment | Any browser | Any browser |
| Setup Time | Instant (0 seconds) | 30–60 min node configuration | Instant | Instant |
| Generation Speed | Sub-8 seconds | 8–15 seconds (API roundtrip) | Sub-8 seconds | Sub-8 seconds |
| Billing Model | $9.90 One-Time (100 credits) | OpenRouter API billing | $35 / month recurring | $35 / month recurring |
| Credit Expiration | Never expire (permanent) | Pay-per-token API | Expires monthly (lost if unused) | Expires monthly |
What Krea 3 Does Exceptionally Well — And Where It Doesn’t
We believe in technical honesty so you can architect reliable creative pipelines.
Requires an Initial Base Photo for Edits
Krea 3 is specifically an image-to-image editing model. It requires a starting photo in Slot 1 to modify. For pure text-to-image ideation, use our integrated Step 1 (Krea 2 base generation) to create a starting base photo first.
4 Reference Slot Ceiling on API Endpoints
While theoretical research architectures explore unbounded references, production API endpoints cap references at 4 structured slots (Base, Item, Face, Style) to guarantee sub-8s latency.
Open Weights (.safetensors) Not Yet Released
Krea AI has not published standalone checkpoint weights for local offline execution. All ComfyUI integrations currently route through API endpoints.
Why Pay-As-You-Go Beats a $35/Month Subscription
Compare cost-per-image and annual overhead between official recurring subscriptions and TryKrea3 permanent credit packs.
Official Google Gemini API Pricing
Zero Markup ReferenceOfficial prices verified from Google Cloud and Gemini API documentation. Requires developer setup and API key management.
TryKrea3 Browser Platform Model
Zero Code1 Free Trial Edit
Test Krea 3 capabilities on signup with zero credit card required.
Permanent Credit Packs
$9.90 for 100 credits or $24.90 for 300 credits. Never expires, full commercial rights included.
Krea 3 ComfyUI & Workflow FAQ
Answers to common questions regarding ComfyUI nodes, weights, and credit usage.
Can I run Krea 3 fully offline on my local GPU in ComfyUI?
How do I connect Krea 3 to ComfyUI via API?
What is the advantage of using TryKrea3 over running ComfyUI myself?
Do TryKrea3 credits expire if I don’t use them immediately?
Can I use images edited with Krea 3 commercially?
Make Your First Krea 3 Image, Free
Bring a product photo, a selfie or just an idea. A minute from now you'll know whether 2.1 is right for your work. The first image is on us, and there's a new free one every week.
- ✓1 free image every week · no card
- ✓Google's official 2.1 API
- ✓Failed runs never use credits
Runs Krea 3 through OpenRouter · independent of Krea AI