Free AI Rendering Tools for Architects: What Each Free Tier Includes

Quick answer: Render a House and VizBase publish recurring free allowances; mnml.ai gives non-expiring signup credits; ArchiVinci offers three no-watermark trial renders; and Chaos currently promotes a 14-day Veras trial. “Free” differs by frequency, watermark, resolution, and whether a trial converts to paid billing.

Last updated: October 2026.

Free allowance and limits stated on vendor pages checked Oct 2026. “Not published” means the reviewed sources did not state the detail.

We checked each vendor’s current product, help, or pricing documentation in Oct 2026 and compare only the stated allowance, watermark, output size, and payment-method information. We did not create accounts, generate images, test output quality, or rank the services. Trial offers can change; read the linked terms before starting a plan that automatically bills after its trial.

Render a House is an AI rendering tool for architects and real estate.

What it is and what you can upload. Render a House is a browser-based AI image renderer. Its supported-format documentation lists PNG, JPEG, and WebP image inputs, plus 3D formats including native SketchUp .skp, GLB, GLTF, OBJ, and STL. Export a PDF drawing as PNG or JPG before uploading. Uploading an .skp file does not require a SketchUp export or plugin.

Free use. The getting-started guide says Free accounts receive 3 credits each day; each render or edit uses 1 credit. Credits refresh daily, and Free renders include a small watermark. Plan documentation publishes the credit and paid-plan terms but does not state a separate maximum output resolution for the Free plan; we therefore mark that detail not published rather than infer it from paid tiers.

Where it fits. This tier suits architects who want to make small daily batches of concept views and revisions in a browser. Each generation still needs review against the original geometry; use the supported-file guide and pricing details to check current file and credit limits.

What it is. Chaos currently offers Veras, an AI visualization product for architects, plus AI Enhancer features inside supported Enscape, V-Ray, and Corona versions. The standalone-looking “Chaos AI” name is not a separate permanent free plan in the vendor pages reviewed.

Free access and limits. Chaos advertises a 14-day Veras trial with 100 credits shared by image and video generation. Its current trial page also describes an introductory offer of up to four free models through Oct 30, 2026; it says billing starts automatically after the trial unless canceled. The page’s credit example is approximately ten 1K images or ten AI videos, while watermarks and card requirements are not stated there. The AI Enhancer announcement says access requires a valid non-trial Chaos license; eligible Premium and Collection trials include 100 credits for testing.

Price and best fit. Veras plans and the current offer are shown on the Chaos Veras page; check the terms before activating its auto-billing trial. It is a good fit for testing an integrated architecture-oriented image/video workflow, not for a guaranteed permanent free quota. Sources: Veras trial, AI Enhancer announcement, and Chaos Credits guide.

What it is. mnml.ai is a collection of AI tools for architectural and interior visualization, including image generation and editing features. Its pricing page says every new account starts with 100 free credits that do not expire and explicitly says a credit card is not required.

Watermark, resolution, and price. mnml.ai’s help page says renders made on the free tier are watermarked; the reviewed pricing page does not publish a separate free-tier output resolution. Its paid Lite plan starts at $29/month and includes 1,000 monthly credits, with 8K upscaling included on paid plans. Sources: mnml.ai pricing and the watermark help page.

Where it fits and limits. Non-expiring signup credits are convenient for testing several architecture-specific modes over time. They are a starter balance, not a recurring monthly free grant, and the free outputs are watermarked.

What it is. ArchiVinci offers AI rendering for architectural images, sketches, floor plans, and project views, with additional editing and video tools on paid plans. Its homepage advertises three free renders without a watermark.

Free access and price. The free trial is limited to three renders. The current pricing page lists a $79 monthly subscription and a $549 yearly subscription; it also lists limited one-time access options and add-on coin packs. The reviewed free-trial pages do not state the maximum free output resolution or whether a card is required. See ArchiVinci’s product page and pricing details.

Where it fits and limits. Choose it when three clean, watermark-free samples are more useful than a larger recurring allowance. The trial is small; check the current plan’s model, coin, and video limits before using it for a recurring client pipeline.

What it is. VizBase is an AI renderer for architectural model views, with editing and inpainting tools. Its pricing page lists five credits each month on Free, enough for up to ten draft renders, and says the free tier does not require a card or add a watermark.

Output and paid plans. VizBase says free users can export at the original render resolution; the specific maximum size for Free is not published. Its render-engine guide describes higher fixed 4K, 6K, and 8K exports as paid or credit-pack features. The pricing page lists paid plans starting at €25/month billed annually (monthly billing starts at €29/month); displayed prices and VAT can vary. Sources: VizBase pricing, AI architecture rendering, and render engine and export details.

Where it fits and limits. A recurring credit grant suits small monthly experiments, and inpainting can revise a marked area without restarting the entire workflow. Keep in mind that the credit cost varies by render mode and that the exact free export ceiling is not stated.

Choose by the kind of free access you need: daily use (Render a House), monthly credits (VizBase), non-expiring signup balance (mnml.ai), a few watermark-free trial images (ArchiVinci), or a time-limited product trial (Chaos Veras). Compare what remains usable after the free balance is exhausted, and whether a watermark or automatic trial conversion affects your client workflow.

When a vendor does not state a card rule or resolution ceiling, treat it as unknown and confirm it on the current account or plan page before relying on it.

Which of these tools has a recurring free allowance?

Render a House documents daily free use, and VizBase lists five credits per month. mnml.ai describes 100 free signup credits that do not expire, while ArchiVinci advertises three free trial renders and Chaos currently advertises a time-limited Veras trial.

Does Render a House Free include a watermark?

Yes. The getting-started and plans documentation says free renders include a small Render a House watermark. The reviewed plan documentation does not publish a separate maximum output resolution for Free.

Does Chaos offer a standalone free AI renderer?

The current Chaos pages reviewed describe a 14-day Veras trial with shared image/video credits and an AI Enhancer accessible through supported Chaos products and eligible licenses. They do not describe a permanent standalone free AI plan.

Which free plan requires a credit card?

mnml.ai and VizBase explicitly say a card is not required. Chaos’s Veras trial page says billing begins after the trial but does not clearly state the payment-method requirement. The reviewed ArchiVinci free-trial pages also do not state it, so those entries are marked not stated.