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AI Image - BiRefNet v2

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モデル:
+ GPT-5, Claude, Gemini
Image model Premium
BiRefNet v2 — BiRefNet v2 is a image model by Free.ai, available on Free.ai. Each image costs approximately 33,750 tokens. Compare against our self-hosted models which run free within your daily limit.
~5000 証券/1枚あたりの
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Starting generation...

What is BiRefNet v2?

BiRefNet v2 is a image model by Free.ai, available on Free.ai. Each image costs approximately 33,750 tokens. Compare against our self-hosted models which run free within your daily limit.

Why use BiRefNet v2 for image generation?

Text-to-image

Type a description, get an image. Style, aspect ratio, and batch count are all controllable from the form above.

Aspect ratios

Square, landscape, portrait, 4:3, 3:4. Pick the ratio in the form so the model frames the shot for that shape.

Batch generate

Pick 1, 2, or 4 in the count field above. For larger fan-outs use /image/generate/ which sends one prompt to multiple models in parallel.

Commercial use OK

No watermark, outputs are yours. Commercial use is in scope across every model on Free.ai.

Sample prompts

A serene mountain lake at sunrise, mist over the water, photorealistic
Astronaut riding a horse on Mars, cinematic lighting, high detail
Macro shot of a single dewdrop on a green leaf, morning light
Watercolor illustration of a quiet bookstore at night, warm window glow
Studio portrait of a golden retriever puppy on a soft blue backdrop
Retro travel poster of Mt. Fuji, flat shapes, 4 bold colors

Pricing

Premium image. Cost is per image — typically ~5000 tokens. $1 buys 750,000 tokens; a $5 token pack covers many images. Free signups get 10,000 tokens to try.

Compare to alternatives

Marigold Depth Premium

Marigold Depth is a image model by Free.ai, available on Free.ai. Each image costs approximately 33,750 tokens. Compare ...
Depth Map Premium

Depth Map is a image model by Free.ai, available on Free.ai. Each image costs approximately 22,500 tokens. Compare again...
Face-to-Sticker Premium

Face-to-Sticker is a image model by Free.ai, available on Free.ai. Each image costs approximately 45,000 tokens. Compare...

Full model reference → · See all image models → · 画像モデルの比較 →

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ご要望を処理中...

BiRefNet v2 is a image model by Free.ai, available on Free.ai. Each image costs approximately 33,750 tokens. Compare against our self-hosted models which r...

使い方 AI Image - BiRefNet v2

1
入力を入力

テキストを入力、ファイルをアップロード、または必要なことを記述します。アカウントは必要ありません。

2
クリックして生成

私たちのAIは、最良のオープンソースモデルを使って、あなたの要求を数秒で処理します。

3
ダウンロードと共有

結果をダウンロード、コピー、共有できます。個人的、商業的な使用は無料です。

このツールを API で使用

あなたのコードからこのツールを自動化します。OpenAI 互換の REST エンドポイント、ベアートークン認証、追加の SDK が必要ありません。トークンのコストはウェブインターフェースと一致します。

APIドキュメント API キーを取得 
curl -X POST https://api.free.ai/v1/image/generate/ \
  -H "Authorization: Bearer sk-free-..." \
  -H "Content-Type: application/json" \
  -d '{"prompt": "A sunset over mountains", "model": "sdxl"}'

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AI Image - BiRefNet v2 — FAQ

BiRefNet v2 is a image model by Free.ai, available on Free.ai. Each image costs approximately 33,750 tokens. Compare against our self-hosted models which run free within your daily limit.

BiRefNet v2 works well for general-purpose image generation, illustration, and product visuals. Try the sample prompts above to see its strengths.

About 5,000 tokens per image. $1 buys 750,000 tokens, and a free Free.ai account includes 10,000 signup tokens plus a daily refill, so most users can try BiRefNet v2 without spending anything.

It depends on the prompt. Free.ai lets you compare BiRefNet v2 side-by-side with any other model at /image/compare/ — pick a sibling from the alternatives list to see how they differ on the same input.

Yes. Free.ai does not add watermarks and the outputs are yours to use commercially. See /apps/birefnet-v2/ for the full breakdown.

On Free.ai, BiRefNet v2 supports 1:1 (square), 16:9 (landscape), 9:16 (portrait), 4:3, and 3:4. Pick the ratio in the form above before generating.

Most images come back in 5-25 seconds depending on the model and current GPU load. The result appears inline; signed-in users can also Add to queue to close the tab and get notified when it lands.

Yes — pick 1, 2, or 4 in the count field. Each image deducts about 5,000 tokens. For larger batches use /image/generate/ which fans out the same prompt across multiple models in parallel.

Free.ai does not train models on your prompts. Self-hosted models stay on our GPUs. Premium models route to the upstream provider for inference. Either way we never resell your data.

Yes. POST to /v1/image/generate/ with model="premium/birefnet/v2" and include your Bearer token. Full reference: /api/.

BiRefNet v2 is a premium model served by an external provider, so self-hosting is not available. Free.ai exposes it with token-based pricing instead.

Free accounts get 10,000 signup tokens plus a daily pool. When that runs out, top up starting at $1 (750K tokens) — no subscription required.

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