Is there a free image generation API with no credit card in 2026?

Yes. cogview-3-flash costs $0 per image through NovAI's OpenAI-compatible /v1/images/generations endpoint. Signup is by email only; no payment method is required.

Does it work with the official OpenAI Python SDK?

Yes. Point the SDK at https://aiapi-pro.com/v1 and call client.images.generate(model='cogview-3-flash', prompt='...'). No other code changes.

What do paid image APIs cost in 2026?

On NovAI: Tencent Hunyuan hy-image-lite $0.014/image, ByteDance Seedream 5.0 $0.027/image, hy-image-v3.0 $0.028/image, Seedream 5.0 Pro $0.034/image. Typical hosted image APIs elsewhere list $0.02-$0.08+ per image.

Free AI Image Generation API in 2026: $0 Images with the OpenAI SDK

Watermark notice — Every image model on NovAI is served by a Chinese provider (Zhipu AI, ByteDance, Tencent) and burns a visible AI-generated label such as AI生成 into the corner of the output under China’s labelling rules — NovAI cannot switch it off. Video output varies by model: in our 4 August 2026 tests Seedance 2.0 and CogVideoX-Flash showed no visible label, while Hunyuan Video 1.5 is labelled. Text and chat models are not affected. Which models, and what it rules out →

We run NovAI — first-party guide, prices from our live model catalog, July 2026.

The Problem with "Free" Image APIs

Most "free image generation API" results are either trial credits that expire, rate-crippled demos, or web tools with no API at all. What developers actually want: a real endpoint, callable from code, $0, no card, no expiry.

cogview-3-flash: $0 per Image

cogview-3-flash is Zhipu's flash-tier image model. Free upstream in China, but Z.ai's international API does not offer a free image tier — NovAI passes the free tier through to international developers with zero markup.

from openai import OpenAI

client = OpenAI(api_key="sk-novai-xxx", base_url="https://aiapi-pro.com/v1")

img = client.images.generate(
    model="cogview-3-flash",
    prompt="isometric illustration of a tiny server room, pastel colors",
)
print(img.data[0].url)

That is the entire integration — standard OpenAI SDK, standard /v1/images/generations endpoint.

What Paid Image APIs Cost (For Context)

Model	Provider	Price / image (NovAI)
`cogview-3-flash`	Zhipu	$0
`hy-image-lite`	Tencent Hunyuan	$0.014
`doubao-seedream-5.0`	ByteDance	$0.027
`hy-image-v3.0`	Tencent Hunyuan	$0.028
`doubao-seedream-5.0-pro`	ByteDance	$0.034

Typical hosted image APIs elsewhere list roughly $0.02–$0.08+ per image (July 2026 list prices). If you generate 1,000 thumbnails a month, "free vs $0.03" is a $30/month difference for a prototype-grade use case.

What People Use the Free Tier For

Placeholders & thumbnails in internal tools and MVPs.
CI tests for image pipelines against a real API.
Prompt iteration — dial in prompts for free, then run the final batch on Seedream/Hunyuan quality tiers.
Learning the OpenAI images API shape without a budget.

Honest Limitations

Flash means smaller and faster: output quality is below Seedream 5.0 Pro or Hunyuan v3.0. For hero images and client-facing art, use a paid tier — same key, same endpoint, different model ID.

Email signup. No card. cogview-3-flash plus 4 more free models (chat, vision, video).

Get a free API key →

FAQ

Is the free tier rate-limited?

Normal per-account API rate limits apply, same as paid models. There is no separate crippled "free lane".

Can I also generate video for free?

Yes — cogvideox-flash is $0 per generation. Guide: Free AI Video Generation API in 2026.

Why would you give this away?

The upstream flash tier is free to us, so it is free to you. We earn when you later need higher-quality paid models — and we would rather earn that upgrade honestly.