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Google TTS Chirp 3 HD vs TTS-1 HD

vs

何時該用哪一個 — 綜合評斷,而非基準測試數據表

兩者都是每百萬字元 $30,也都支援串流,所以差別在控制力和長度:google-tts-chirp3-hd 每次請求接受 5000 位元組,提供數值型語音參數並把 SSML 列為預覽;tts-1-hd 接受 4096 個字元,完全沒有音色控制。兩者涵蓋都很廣,只是 tts-1-hd 的列表跟隨 Whisper 的語言集,而不是一份列舉出來的語言區清單。需要形塑交付效果時選 google-tts-chirp3-hd,預設音色夠用時選 tts-1-hd。

定價

Google TTS Chirp 3 HD TTS-1 HD Δ
每 1M 字元 $30 $30 =

費率取自建置時的即時目錄;各模型頁面皆附有目前的費率卡。

它們的相對位置 — 在此計費單位下,所有 7 個 文字轉語音 模型的 每 1M 字元的價格(對數尺度)

能力

Google TTS Chirp 3 HD TTS-1 HD
串流
SSML preview undocumented
計費單位 character character

規格

Google TTS Chirp 3 HD TTS-1 HD
輸入模態 文字 文字
輸出模態 音訊 音訊
請求限制 5000 bytes 4096 characters
語音 Voices are named after stars and published with a gender: Achernar, Achird, Algenib, Algieba, Alnilam, Aoede, Autonoe, Callirrhoe, Charon, Despina, Enceladus, Erinome, Fenrir, Gacrux, Iapetus, Kore, Laomedeia, Leda, Orus, Pulcherrima, Puck, Rasalgethi, Sadachbia, Sadaltager, Schedar, Sulafat, Umbriel, Vindemiatrix, Zephyr and Zubenelgenubi. A locale prefix forms the id, e.g. en-US-Chirp3-HD-Charon. Google describes the set as 30 distinct styles across many languages. alloy, ash, coral, echo, fable, onyx, nova, sage and shimmer, a smaller set than the full 13-voice TTS list, and voices are currently optimized for English.
語言 ar-XA, bn-IN, bg-BG, yue-HK, hr-HR, cs-CZ, da-DK, nl-BE, nl-NL, en-AU, en-IN, en-GB, en-US, et-EE, fi-FI, fr-CA, fr-FR, de-DE, el-GR, gu-IN, he-IL, hi-IN, hu-HU, id-ID, it-IT, ja-JP, kn-IN, ko-KR, lv-LV, lt-LT, ml-IN, cmn-CN, mr-IN, nb-NO, pl-PL, pt-BR, pa-IN, ro-RO, ru-RU, sr-RS, sk-SK, sl-SI, es-ES, es-US, sw-KE, sv-SE, ta-IN, te-IN, th-TH, tr-TR, uk-UA, ur-IN and vi-VN. Generally follows the Whisper model’s language support: Afrikaans, Arabic, Armenian, Azerbaijani, Belarusian, Bosnian, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kannada, Kazakh, Korean, Latvian, Lithuanian, Macedonian, Malay, Marathi, Maori, Nepali, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Tagalog, Tamil, Thai, Turkish, Ukrainian, Urdu, Vietnamese and Welsh, despite voices being optimized for English
語音控制
  • Voice controls are Preview: pace via speaking_rate 0.25 to 2.0
  • pause tags [pause short], [pause long] and [pause] accepted only in the markup input field, never in text, and the model may disregard tags placed unnaturally
  • custom pronunciations in IPA or X-SAMPA
  • SSML support is Preview and synchronous-only, unsupported for streaming requests, with unlisted tags ignored and say-as interpret-as=expletive or bleep not supported
none
限制

Content limit of 5,000 total bytes per synthesize request. Default response format LINEAR16

streaming supports ALAW, MULAW, OGG_OPUS and PCM, batch adds MP3, so MP3 is not available on the streaming path. The only voice type Google's comparison table marks as streaming-capable. Generally available in the global, us and eu endpoints plus asia-southeast1, europe-west2 and asia-northeast1, but out of scope for regionalization and data residency. Billed per character including spaces and newlines, with all SSML tags except <mark> counted.

Speech generation endpoint (v1/audio/speech) only, with Chat Completions, Responses, Realtime, Batch and Fine-tuning all listed as not supported

input text is capped at 4096 characters

output mp3 (default), opus, aac, flac, wav or pcm (raw 24 kHz 16-bit signed little-endian samples)

realtime playback via chunked transfer encoding

規格摘錄自各供應商的文件;供應商未發布的資料列會直接省略,而非自行推測。 完整來源: Google TTS Chirp 3 HD · TTS-1 HD

只需一行程式碼即可在兩者間切換

以下每個頁籤中都有這兩個 ID — 醒目提示的這兩行是唯一的修改處。相同的端點,相同的金鑰,相同的請求結構。

from openai import OpenAI

client = OpenAI(
    base_url="https://synthorai.io/v1",
    api_key="sk-syn-...",
)

resp = client.audio.transcriptions.create(
    model="google-tts-chirp3-hd",
    # model="tts-1-hd",  # 取消註解此行,並註解上一行
    file=open("meeting.mp3", "rb"),
    language="en",
)
print(resp.text)

取得 API 金鑰 →

常見問題

Google TTS Chirp 3 HD 和 TTS-1 HD 哪個比較便宜?

兩者列出的 每 1m 字元 相同($30),因此價格無法決定勝負 — 請參閱下方的規格與功能。

我可以在不進行兩次整合的情況下,對 Google TTS Chirp 3 HD 和 TTS-1 HD 進行 A/B 測試嗎?

可以。兩者皆透過同一個相容 OpenAI 的端點提供服務,並使用同一把 API 金鑰 — 切換只需更改一行的模型字串,因此您可以將部分流量分別導向兩者並直接比較帳單。

文字轉語音是如何計費的?

依輸入文字的字元數計費,規格表中會顯示每個請求的字元上限。較長的稿件在這兩個模型上都必須分拆成多個請求。

相關比較