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AI Voice — Chatterbox

商用OK 380+モデル 透かしなし 登録は不要
モデル:
+ GPT-5, Claude, Gemini
TTS engine Self-hosted MIT
Chatterbox — Highly expressive TTS with voice cloning support.
0 文字 ~0 tokens
Cost scales with character count
Generating speech...

What does Chatterbox sound like?

Highly expressive TTS with voice cloning support.

Try the box above with: Hello, my name is Sam, and I am reading this sample to demonstrate the voice. — that is the canonical TTS demo phrase.

When to use Chatterbox

Audiobooks

Long-form narration with consistent tone. Paste a chapter at a time, download as WAV or MP3, and stitch externally.

Podcast intros

Short opening bumpers and ad-reads. Adjust speed for energy, format-switch to MP3 for smaller files.

IVR + voicemail

Phone-system prompts. Studio-quality output without a booking, recording, or NDAs with voice talent.

Accessibility

Add audio alongside written content for low-vision and dyslexic readers. Drop-in on any page.

Sample phrases

"Welcome to the show, today we are exploring the future of AI."
"Your package has arrived. Please retrieve it from the front desk."
"Once upon a time, in a quiet village far away, lived a curious child."
"Press one for sales, two for support, or stay on the line for an agent."
"Breaking news: scientists have discovered a new species of deep-sea fish."
"Thank you for choosing us. We appreciate your business and look forward to serving you again."

Pricing

Self-hosted on our GPUs. Generation draws from your daily free pool first; once that runs out, paid token packs start at $5 → 200,000 tokens. Roughly ~5 tokens per character, minimum 100 per clip.

Full model reference → · See all TTS voices → · Compare 2 voices side-by-side →

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Want better results? プレミアムモデル (GPT-5, Claude, Gemini) deliver higher quality. View Plans

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Highly expressive TTS with voice cloning support.

使い方 AI Voice — Chatterbox

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/tts/ \
  -H "Authorization: Bearer sk-free-..." \
  -H "Content-Type: application/json" \
  -d '{"text": "Hello from Free.ai", "voice": "af_heart", "model": "kokoro"}'

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AI Voice — Chatterbox — FAQ

Chatterbox supports a wide range of languages. The exact list depends on the engine; the form on this page accepts any text and the engine will render in its supported languages. See /voice/ for the full multi-engine picker if you need a specific language.

Most engines render neutral-American English by default and a region-appropriate accent for non-English languages. Premium engines may expose accent variants — paste a sample to compare.

SSML support varies by engine. Pause, prosody, and emphasis tags are honored on most premium engines and on a few self-hosted ones. Plain text always works — no markup required.

Streaming TTS is available on premium engines via the /v1/tts/ API endpoint with stream=true. The web UI on this page returns the full clip once rendering finishes.

Chatterbox runs on our own GPUs. Generation draws from your daily free pool first. Once depleted, paid tokens start at $5 → 200,000 tokens. Roughly ~5 tokens per character, minimum 100 per clip.

Up to 5,000 characters per request on the web UI. For longer pieces (audiobooks, full chapters), use /voice/audiobook/ which chunks and stitches automatically, or call the API in a loop.

Yes — POST a list of strings to /v1/tts/batch/, or use the workspace UI at /workspace/ to chain TTS into a longer pipeline (e.g., translate → speak → stitch).

Yes — POST text to /v1/tts/ with model="Chatterbox" (or the slug on this page). Returns WAV or MP3. See /api/ for full reference + SDK snippets.

This page is text-to-speech, not voice cloning — the voice is the engine's default. For voice cloning (uploading a reference audio), see /voice/clone/, which requires you to either own the voice rights or have explicit written consent.

Self-hosted engines run on Free.ai-owned GPUs; nothing leaves our servers. Premium engines pass text to upstream model providers under our DPA. We do not train on your inputs and do not sell data.

Yes — Free.ai grants commercial use of generated audio. The engine's underlying license (Apache 2.0, MIT, or vendor terms) is shown above and on the model reference page; in practice this means voiceovers, ads, podcasts, and apps are all in-scope.

Yes — failed jobs auto-refund to the source (daily pool or paid tokens). If a refund does not show up the same day, email contact@free.ai.

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