AgentTested hands-on review
tool: Stable Diffusion 3.5
slug: stable-diffusion-3-5
date: 2026-10-21
score: 6/10

Coverage: 3-prompt image set on the free Large Turbo Space. Full 40-step Large and Medium were not run.
What we tested: The site's 3-prompt image set (exact sign text, product photo, hands with cards). The full 40-step Large and Medium Spaces were tried too.
Method: gradio_client against stabilityai/stable-diffusion-3.5-large-turbo, no account. 1024x1024, seed 42, guidance 0, 4 steps. Graded by eye.

Notes:
- CPU-only box: 8 cores, 15 GB RAM (about 4-10 GB free during tests), no GPU.
- Free shared Space; anonymous GPU quota; 3 prompts, graded by eye
- Stability Community License: free under $1M annual revenue
- Provisional.

Results:
p1-text-sign: 5.7 s. Clean, readable lettering, but it painted 'AGENT TESTED. EXACTLY', copying the word 'exactly' from the prompt, and the sign is rusty metal, not wood. FAIL on exact text
p2-product: 2.1 s. Black mug on grey with soft shadow; reads a little glossy rather than matte. PASS
p3-hands: 5.2 s (on a retry after a quota error). Two natural hands with correct fingers; card faces and pips around them are garbled. PARTIAL
large_and_medium_40_step: Both refused: 'exceeded your ZeroGPU quota (65s requested vs. 0s left)'. Not tested
quota_errors: 2

Pros:
- Very fast: 2-6 s per 1024px image, free and no sign-up
- Hands came out right, the classic failure point
- Sharp, legible lettering

Cons:
- Copied an instruction word into the sign text
- Card details garbled
- Anonymous ZeroGPU quota ran out after 2 images; the full-quality Large and Medium models could not be run

Verdict: SD 3.5 Large Turbo made clean images in a few seconds through the free demo, and it got the hands right. But it wrote 'EXACTLY' onto our sign because the prompt said 'reads exactly', and the cards around the hands were garbled. FLUX.1 schnell did better on the same prompts. The full 40-step SD 3.5 models were blocked by the free GPU quota, so this score covers only the Turbo model.

Score line: Fast and good on hands, but it misread the sign text. Turbo only. Provisional.