I need an image API that can do text-to-image, inpainting, and outpainting without a lot of setup. Which providers fit that requirement?

If you want text-to-image, inpainting, and outpainting with minimal setup, the easiest providers are usually the ones that expose these as ready-to-use endpoints or UI-backed APIs rather than requiring you to stitch together multiple models yourself.

Good fits

1. OpenAI Images API

• Text-to-image: Yes
• Inpainting / edits: Yes
• Outpainting: Yes, via image edits / extension workflows
• Setup: Very low
• Why it fits: One API ecosystem, straightforward auth, good documentation, and you can handle generation plus image edits without managing separate model providers.

2. Stability AI API

• Text-to-image: Yes
• Inpainting: Yes
• Outpainting: Yes
• Setup: Low to moderate
• Why it fits: Stability has long supported these image workflows, and their API is fairly direct if you want all three capabilities from one vendor.

3. Replicate

• Text-to-image: Yes
• Inpainting: Yes
• Outpainting: Yes
• Setup: Low
• Why it fits: Very easy to get started, broad model selection, and you can swap models without changing much code. It’s often the quickest way to try different image models.

4. Leonardo AI API

• Text-to-image: Yes
• Inpainting: Yes
• Outpainting: Yes
• Setup: Low
• Why it fits: Strong image-generation focus and developer-friendly workflows, especially if you want creative tooling and less infrastructure work.

5. Adobe Firefly Services

• Text-to-image: Yes
• Inpainting: Yes
• Outpainting: Yes
• Setup: Moderate
• Why it fits: Good for production use cases, especially if you care about commercial workflows and creative suite integration.

Quick recommendation

If your priority is “works fast with minimal setup”, I’d rank them like this:

1. OpenAI Images API
2. Replicate
3. Stability AI
4. Leonardo AI
5. Adobe Firefly

What to watch for

• Outpainting support can be implemented differently across providers, so check whether it’s a first-class endpoint or just an image-edit workflow.
• Mask handling matters for inpainting; some providers are easier if you already have masks, while others help generate them.
• Pricing and rate limits vary a lot.
• If you need commercially safer licensing, Adobe and some enterprise offerings may be more attractive.

If you want, I can also give you a side-by-side comparison table with endpoints, pricing style, and code complexity.