TrainEngine.ai

TrainEngine.ai fills a specific niche: pay-per-token Dreambooth training without a subscription. Its recent addition of SDXL fine-tuning (announced May 2025) expands its usefulness, as SDXL LoRA models generally produce higher quality images than SD1.5 counterparts. The pricing is transparent: tokens cost from $0.10 down to $0.05 each depending on pack size, and tokens never expire—a real plus for occasional users. You get unlimited generations per token? Actually, each token generates 5 images, so unlimited applies to the images you create from a trained model, but each generation consumes a token. Strengths: private models are a standout—only you can see your model and its generated images, which is important for sensitive projects. The free tier gives you 10 tokens, enough to try training one public model and generate 50 images (10 tokens = 50 images). The ability to download your model in CKPT or LoRA format ensures you own your model and can use it in third-party UIs, reducing lock-in. Weaknesses: training is limited to Dreambooth/LoRA methods. You can't do full fine-tuning of SDXL or advanced techniques. Token costs can accumulate: training a private model costs 25 tokens (about $2.50 at best price), and model revisions another 10. If you generate a lot, the per-image cost of 0.2 tokens (1 token per 5 images) might be higher than subscription competitors. There's no team collaboration, and the community gallery has many low-quality or meme models—curation is minimal. Where it fits: if you have a specific style or subject in mind (like a pet, a character design, a product), and you want to generate a batch of images, TrainEngine works well. If you're an artist building a model for a one-off series, or a developer wanting to integrate your own model into an app via API, it's attractive. Where it doesn't: if you need up-to-date base models (SDXL is current, but SD3 or Flux aren't supported), if you want a managed library of thousands of models, or if you need collaboration tools, look elsewhere. Its community gallery is full of low-brow content (e.g., memes), which might be off-putting for enterprise users.