Render a .blend file online, without a GPU of your own

Install the CLI with pip install janction-render and run janction-render preview scene.blend to get a 4-frame preview sheet in a few seconds, then janction-render render scene.blend --frames 1-24 --size 1280x720 --samples 64 --wait for the MP4 (measured: 24 frames at 720p / 64 samples took 59 GPU seconds, 65 seconds round trip). Textures referenced with relative paths are collected automatically; packed images travel inside the file. Each new key starts with a welcome credit of up to 500 JPY (14 days); after that, previews stay free up to 2 GPU-minutes a day and finals cost 0.1 JPY per GPU-second. Finals go up to 3,000 frames per instruction (automatically split internally), 1080p on free time and 4K on prepaid credit; files are deleted 24 hours after last use (7 days, normally, for keys that have paid 500 JPY or more in total). The same works from Claude, ChatGPT, Codex or Claude Code through the MCP server, or from inside Blender with the add-on. AI agents connect at https://render.janction.jp/mcp (remote MCP with OAuth; connecting creates a free key).

Updated 2026-11-12

What it does Your own .blend, bpy script or 3D file (glTF/GLB, FBX, USD, OBJ...) rendered to images or video on a cloud NVIDIA GPU, from an AI app, the terminal or the browser. The first preview needs no payment.
What it does not do It does not speed up the Blender viewport on your machine, does not take non-Blender video, simulations or general GPU jobs, and an AI that is not connected cannot render on its own.

Try your own file for freeBuild it with an AI and try

Browser only; no connector or CLI needed. A 100 JPY welcome credit for a new key (14 days, no card; one per network every 30 days, further keys on the same network share what is left), and 400 JPY more for saving a card that is not charged (once per card); after that, previews stay free up to 2 GPU-minutes a day and finals cost 0.1 JPY per GPU-second.

1. From the terminal (CLI)

pip install janction-render
janction-render preview scene.blend                                   # 4 frames tiled, a few GPU seconds
janction-render preview scene.blend --frames 1-240 --environment studio
janction-render render scene.blend --frames 1-24 --size 1280x720 --samples 64 --wait   # output.mp4
janction-render render scene.blend --frames 1-48 --size 1920x1080 --samples 128 --output png --wait

A free key is created on first use and cached in ~/.janction-render.json. pip install janction-render[blend] adds blender-asset-tracer, which collects the textures a .blend references through relative paths; packed images need nothing.

2. From an AI agent (MCP)

Connect the MCP server (https://render.janction.jp/mcp, see below) and say: "Render my scene.blend: preview first, then 24 frames at 720p as an MP4." The agent uploads the file (stdio) or takes an https link (remote), calls render_preview, shows you the sheet, calls render_estimate and then render_final, and gives you the links.

3. From inside Blender

The add-on adds Preview / Estimate / Final buttons under Properties → Render; a copy of the open file and its relative textures are uploaded.

Measured

These are individual observations of simple scenes (2026-09-30 to 10-01 UTC, NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition, 96 GB). The 4-GPU-second example used a rotating cube, four 640x360 tiles and 16 samples. GPU time includes Blender startup and scene loading; it is distinct from completion time including queue and transfers. See conditions, round trips and reproduction files. These are not speed guarantees.

render_estimate gives the number before rendering; once a scene has been rendered once, the estimate uses that scene's own measurement.

Pricing (since 2026-10-08): Each new key gets 100 JPY of GPU time free with no card (1,000 GPU-seconds, 14 days) for previews and finals, and 400 JPY more once a card is saved on a Stripe page that charges nothing (once per card): up to 500 JPY in all. After it is used up or expires, previews are free up to 2 GPU-minutes per key per day and final renders are paid from prepaid credit at 0.1 JPY per GPU-second. Top-ups (paid) start at 100 JPY. The first top-up during the 14-day welcome period counts 1.5x, with the bonus capped at 500 JPY (100 JPY buys 150 JPY of credit). Top-ups of 2,000 JPY or more get 10 to 20% extra (not combined with the first-top-up bonus; the larger one applies). Top-up bonuses are separate from the welcome credit and the card-saving credit. Payment is on a Stripe Checkout page. One full welcome credit per network every 30 days; further keys from the same network use what is left of that network's credit. A job without enough credit gets HTTP 402 payment_required with a checkout_url. Final renders go up to 3,000 frames per instruction (automatically split internally under one job id), 1080p (1920x1080) on free time and up to 4K (3840x2160) on prepaid credit. The free preview time resets at 00:00 UTC (09:00 JST). No sign-up: connecting creates a key. Inputs and results are deleted 24 hours after last use (normally 7 days for keys that have paid 500 JPY or more in total) and never used for training.

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FAQ

Related

• Blender MCP server for rendering
• How to render Blender without a GPU
• Render a Blender animation online as an MP4 (free tier): frames, samples, time
• FAQ
• How much does cloud rendering a Blender video cost? Measured GPU seconds and prices

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