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How to generate images locally with Tensai image with Tensai

Render a 256x256 picture from a text prompt using Qwen-Image-2.1 in pure Go.

Short answer: Clone the repository and build or install the Tensai command from its root; then make sure enough disk space is free for the checkpoint, which the README sizes at 7GB at eight bits or 3.5GB at four bits; run tensai image "a calico cat asleep on a stack of books". All steps.

Who it is forA creator or developer who wants text-to-image output on a laptop without a cloud image service.

The problemImage generation models usually need a Python stack and a dedicated GPU.

The outcomeA generated image file cached beside the checkpoint, produced by a single command.

What you need first

  • Go toolchain (Go 1.26 or 1.27 is needed only for the GOEXPERIMENT=simd build)
  • git to clone the repository
  • Disk space for model checkpoints when using the image, audio, or embedding commands

Steps

  1. Clone the repository and build or install the Tensai command from its root. (inferred, check the README)
  2. Make sure enough disk space is free for the checkpoint, which the README sizes at 7GB at eight bits or 3.5GB at four bits.
  3. Run tensai image "a calico cat asleep on a stack of books"
  4. Open the cached result and confirm it shows the requested subject.

Prompt for your agent

In the mattn/tensai repository, run tensai image with the prompt "a calico cat asleep on a stack of books". Report the output file path and the elapsed time. Verify that the image file exists and that the run took under four minutes on a laptop-class machine, as the README claims.

Caveat. The README timing of under four minutes for a 256x256 picture is a claim about a laptop, so actual speed will depend on the machine and the checkpoint download.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for mattn/tensai and "Generate images locally with Tensai image"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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