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MOSS-Image Turbo vs FLUX.2 Klein 4B vs Qwen Image 2.1 vs Seedream 5.0 Flash: three text prompts

MOSS-Image Turbo vs FLUX.2 Klein 4B vs Qwen Image 2.1 vs Seedream 5.0 Flash blog cover

Oct 24, 2026

EmpirioLabs AI

Disclosure: This article was written with AI assistance and reviewed by EmpirioLabs AI.

Short answer: on three prompts that need lettering, MOSS-Image Turbo, Qwen Image 2.1 (Turbo tier), and Seedream 5.0 Flash spelled every requested word correctly, in English and Chinese, at $0.015, $0.016, and $0.030 an image. FLUX.2 Klein 4B is the lowest price at $0.0085 and misspelled the text in all three, so use it for images without words and for edits from reference images. All four run on EmpirioLabs through one API.

Specs at a glance

MOSS-Image TurboFLUX.2 Klein 4BQwen Image 2.1 (Turbo)Seedream 5.0 Flash
Price per image$0.015$0.0085$0.016$0.030
Requested text correct (of 3)3033
Image inputs and editingNoYesYesYes
Largest output2,048 px on a side, 1 megapixel2,048 px on a side, 1 megapixel2K presets or an exact sizeUp to 2K tiers or an exact size

How we ran it

Each model got the same three prompts, one shot each, with the same seed (20261024) and its default settings at 1024x1024 (the 1K tier at 1:1 for Qwen Image 2.1 and Seedream 5.0 Flash), through POST /v1/images/generations on October 24, 2026. No result was retried or picked.

Prompt 1: an English trail sign

A hand-painted wooden sign at a mountain trailhead that reads "SUMMIT 2.4 MILES" with a small arrow, pine forest in soft morning fog, photorealistic

MOSS-Image Turbo: SUMMIT 2.4 MILES trail sign
MOSS-Image Turbo: correct
FLUX.2 Klein 4B: trail sign with misspelled lettering
FLUX.2 Klein 4B: "SUMMIIT 2.4 MLES"
Qwen Image 2.1: SUMMIT 2.4 MILES trail sign
Qwen Image 2.1: correct
Seedream 5.0 Flash: SUMMIT 2.4 MILES trail sign
Seedream 5.0 Flash: correct

Prompt 2: a jazz poster

A minimalist poster for a jazz night with the title "BLUE NOTE SESSIONS" in large white serif letters and the subtitle "Friday 9 PM, Free Entry", a saxophone silhouette on deep navy

MOSS-Image Turbo: BLUE NOTE SESSIONS poster
MOSS-Image Turbo: correct, plus a small extra line at the bottom
FLUX.2 Klein 4B: jazz poster with misspelled title
FLUX.2 Klein 4B: "BUE NOTE SESSION"
Qwen Image 2.1: BLUE NOTE SESSIONS poster
Qwen Image 2.1: correct
Seedream 5.0 Flash: BLUE NOTE SESSIONS poster
Seedream 5.0 Flash: correct

Prompt 3: a Chinese shop sign

一家茶叶店的木质招牌,上面用金色楷书写着“春山茶舍”四个字,旁边挂着红灯笼,傍晚暖色灯光,真实摄影 (a tea shop's wooden sign with the four characters 春山茶舍 in gold regular script, red lanterns, warm evening light)

MOSS-Image Turbo: tea shop sign reading 春山茶舍
MOSS-Image Turbo: correct
FLUX.2 Klein 4B: tea shop sign with wrong characters
FLUX.2 Klein 4B: wrong characters
Qwen Image 2.1: tea shop sign reading 春山茶舍
Qwen Image 2.1: correct
Seedream 5.0 Flash: tea shop sign reading 春山茶舍
Seedream 5.0 Flash: correct

When to use each

  • MOSS-Image Turbo for signs, posters, and labels in English or Chinese from text alone, at a low price per image.
  • Qwen Image 2.1 when the same request also needs editing or several reference images; its Pro tier adds quality at a higher price.
  • Seedream 5.0 Flash for larger outputs, layer decomposition, and interactive edits.
  • FLUX.2 Klein 4B for images without lettering and for edits from reference images, at the lowest price of the four.

Generate them on EmpirioLabs

curl https://api.empiriolabs.ai/v1/images/generations \
  -H "Authorization: Bearer $EMPIRIOLABS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "moss-image-turbo",
    "prompt": "A hand-painted wooden sign that reads \"SUMMIT 2.4 MILES\"",
    "size": "1024x1024",
    "sync": true
  }'

Change model to flux-2-klein-4b, qwen-image-2-1, or seedream-5-0-flash to run the same prompt on another model; each model page lists its own size options.

Frequently asked questions

Which model spells text most reliably?

In this test MOSS-Image Turbo, Qwen Image 2.1, and Seedream 5.0 Flash got all three texts right, including the Chinese sign, and FLUX.2 Klein 4B got none right.

Can MOSS-Image Turbo edit an image?

No. It is text to image only and refuses image inputs; Qwen Image 2.1, Seedream 5.0 Flash, and FLUX.2 Klein 4B accept reference images.

How large can the images be?

MOSS-Image Turbo and FLUX.2 Klein 4B go up to 2,048 pixels on a side and 1 megapixel in total; Qwen Image 2.1 and Seedream 5.0 Flash offer 2K outputs.

How do I get a result without polling?

Send "sync": true and the response is the finished image.

Try it

Playground | Models | Pricing

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