Cheap AI Image Generation APIs 2026: Seedream 5.0, Hunyuan & Free CogView

The 2026 reality: flagship image APIs charge $0.04–0.08+ per image while Chinese frontier image models deliver near-parity quality at $0.027–0.034 — and one of them is completely free.

Price sheet (NovAI live billing)

Model	Per image	Strength
cogview-3-flash (Zhipu)	FREE	Prototyping, drafts, volume sketches
doubao-seedream-5.0 (ByteDance)	$0.027	Photorealism, text rendering
hy-image-v3.0 (Tencent Hunyuan)	$0.028	Stylized art, strong prompt adherence
doubao-seedream-5.0-pro	$0.034	Max detail, commercial hero images

Cost math for real workloads

10,000 e-commerce product shots: ~$270 on Seedream vs $400–800 on premium Western APIs.
A/B ad creative (4 variants × 100 ads): ~$11 — cheap enough to brute-force creative testing.
Concept drafts: $0 on CogView Flash; promote winners to Seedream for the final render.

One-line integration

curl -X POST https://aiapi-pro.com/v1/images/generations \
  -H "Authorization: Bearer YOUR_NOVAI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"doubao-seedream-5.0",
       "prompt":"minimalist product photo of a ceramic mug, studio light",
       "size":"1024x1024"}'

Free tier: try before you pay

NovAI AI Studio gives every account free daily generations on CogView 3 Flash (images) and CogVideoX Flash (video) — previews are watermarked, and downloads plus paid models unlock after any top-up from $5.

Picking the right model

Brainstorm/draft stage: cogview-3-flash — free and fast.
Production e-commerce / marketing: seedream-5.0.
Illustrated/stylized content: hy-image-v3.0.
Client hero images: seedream-5.0-pro.

Try every model in this article with one API key

NovAI gives you OpenAI-compatible access to DeepSeek, Qwen, GLM, Kimi, Doubao and more — prepaid balance, no subscription, zero platform fee. Free trial credit on signup.

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Cheap AI Image APIs: Seedream 5.0, Hunyuan, CogView (2026)