Models - Trelis Router

Available Models

Speech-to-text and text-to-speech models with transparent pricing. Bring your own API keys.

Sync transcription via POST /api/v1/transcribe. Models with the Batch badge also support async jobs via POST /api/v1/jobs.

ASR BYOK Batch AssemblyAI

$0.21/hr

Universal-3 Pro

High-accuracy batch speech-to-text with word-level timestamps and prompting capabilities. Supports 6 languages with automatic language detection.

Word-level timestamps Auto language detection 6 languages

Provider	AssemblyAI · API Docs
Cost	$0.21 / hour of audio
Input Formats	mp3, wav, flac, m4a, ogg, webm, aac, mp4
Output Formats	json, srt, vtt
Languages	en, es, pt, fr, de, it
Size Limits	Max 5000 MB · Max 10 hrs
Rate Limits	Free: 5 concurrent; Paid: 200+ concurrent (auto-scaling); Global: 20,000 req/5min

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "assemblyai/universal-3-pro"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "assemblyai/universal-3-pro"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch ElevenLabs

$0.40/hr

Scribe v2

High-accuracy batch speech-to-text with word-level timestamps. Supports 99 languages with automatic language detection.

Word-level timestamps Auto language detection 99 languages

Provider	ElevenLabs · API Docs
Cost	$0.40 / hour of audio
Input Formats	mp3, wav, m4a, flac, ogg, webm, aac, opus
Output Formats	json, srt, txt, html, docx, pdf, segmented_json
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 10 more
Size Limits	Max 3000 MB · Max 10 hrs
Rate Limits	Concurrency by tier: Free=8, Starter=12, Creator=20, Pro=40, Scale/Business=60; files >8min chunked into up to 4 segments; multi-channel limited to 1hr/5ch

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "elevenlabs/scribe-v2"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "elevenlabs/scribe-v2"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Fireworks

$0.09/hr

Whisper V3

OpenAI Whisper V3 Large hosted on Fireworks AI with word-level timestamps. Supports 99+ languages.

Word-level timestamps Auto language detection 99+ languages

Provider	Fireworks · API Docs
Cost	$0.09 / hour of audio
Input Formats	mp3, wav, flac
Output Formats	json, verbose_json, text, srt, vtt
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 10 more
Size Limits	Max 1000 MB
Rate Limits	6,000 RPM with payment method (10 RPM without); 200 audio min/min throughput; dynamic soft limits start at 1 req/s and scale up

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "fireworks/whisper-v3"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "fireworks/whisper-v3"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Fireworks

$0.05/hr

Whisper V3 Turbo

OpenAI Whisper V3 Turbo hosted on Fireworks AI. Faster and cheaper than V3 with word-level timestamps. Supports 99+ languages.

Word-level timestamps Auto language detection 99+ languages

Provider	Fireworks · API Docs
Cost	$0.05 / hour of audio
Input Formats	mp3, wav, flac
Output Formats	json, verbose_json, text, srt, vtt
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 10 more
Size Limits	Max 1000 MB
Rate Limits	6,000 RPM with payment method (10 RPM without); 200 audio min/min throughput; dynamic soft limits start at 1 req/s and scale up

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "fireworks/whisper-v3-turbo"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "fireworks/whisper-v3-turbo"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Speechmatics

$0.75/hr

Ursa 2 Enhanced

Enterprise-grade batch transcription powered by Ursa 2 in enhanced accuracy mode. Best-in-class accuracy across 70 languages.

Word-level timestamps 70 languages

Provider	Speechmatics · API Docs
Cost	$0.75 / hour of audio
Input Formats	mp3, wav, m4a, flac, ogg, aac, amr, mp4, mpeg
Output Formats	json-v2, txt, srt
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 20 more
Size Limits	Max 1000 MB
Rate Limits	10 new jobs/s, 50 status requests/s, max 20,000 concurrent jobs; monthly quota: Free=2hrs, Paid=6,000hrs

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "speechmatics/ursa-2-enhanced"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "speechmatics/ursa-2-enhanced"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Deepgram

$0.55/hr

Nova-3

Deepgram's latest and most accurate speech-to-text model with word-level timestamps. Supports 50+ languages with automatic language detection.

Word-level timestamps Auto language detection 50+ languages

Provider	Deepgram · API Docs
Cost	$0.55 / hour of audio
Input Formats	mp3, wav, flac, m4a, ogg, opus, webm, aac, mp4, mp2, pcm
Output Formats	json
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 24 more
Rate Limits	Free: $200 credits; Pay-as-you-go: no documented rate limits; per-second billing

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "deepgram/nova-3"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "deepgram/nova-3"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Google

$0.15/hr

Gemini 2.5 Pro

Google's most capable multimodal model used for audio transcription. Highest accuracy with wide language support. No word-level timestamps.

Auto language detection 50+ languages

Provider	Google · API Docs
Cost	$0.15 / hour of audio
Input Formats	wav, mp3, aac, ogg, flac, m4a
Output Formats	json
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 26 more
Size Limits	Max 20 MB · Max 10 hrs
Rate Limits	Free: 250K TPM, varies by model; Paid: higher limits; see ai.google.dev/gemini-api/docs/rate-limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "google/gemini-2.5-pro"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "google/gemini-2.5-pro"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Google

$0.12/hr

Gemini 2.5 Flash

Google's fast, cost-efficient multimodal model used for audio transcription. Lower cost than Pro with good accuracy. No word-level timestamps.

Auto language detection 50+ languages

Provider	Google · API Docs
Cost	$0.12 / hour of audio
Input Formats	wav, mp3, aac, ogg, flac, m4a
Output Formats	json
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 26 more
Size Limits	Max 20 MB · Max 10 hrs
Rate Limits	Free: 250K TPM, varies by model; Paid: higher limits; see ai.google.dev/gemini-api/docs/rate-limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "google/gemini-2.5-flash"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "google/gemini-2.5-flash"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

ASR BYOK Batch Together

$0.09/hr

Whisper Large V3

OpenAI Whisper Large V3 hosted on Together AI with word-level timestamps. Supports 99+ languages with automatic language detection.

Word-level timestamps Auto language detection 99+ languages

Provider	Together · API Docs
Cost	$0.09 / hour of audio
Input Formats	mp3, wav, m4a, webm, flac
Output Formats	json, verbose_json
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 10 more
Size Limits	Max 1000 MB
Rate Limits	100 requests per rate-limit window (from x-ratelimit-limit header); no other documented limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/transcribe",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "together/whisper-large-v3"},
)
print(resp.json()["text"])

Batch API Call

import httpx, time

# Submit batch job
resp = httpx.post(
    "https://router.trelis.com/api/v1/jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    files={"file": open("audio.mp3", "rb")},
    data={"model": "together/whisper-large-v3"},
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)
print(r.get("text", r.get("error")))

Sync synthesis via POST /api/v1/synthesize. Models with the Batch badge also support async jobs via POST /api/v1/tts-jobs.

TTS BYOK Batch Cartesia

$30/M chars

Sonic 3

Cartesia's flagship TTS model with ultra-low latency and high naturalness. 42 languages. Voices specified by UUID — use the Cartesia playground to find voice IDs.

42 languages Ultra-low latency Voice cloning Emotion control

Provider	Cartesia · API Docs
Cost	$30 / million characters (~$0.03 / 1K chars)
Output Formats	mp3_44100_32, mp3_44100_64, mp3_44100_96, mp3_44100_128, mp3_44100_192, wav_44100, wav_22050, pcm_f32le, pcm_s16le, pcm_mulaw, pcm_alaw
Languages	en, fr, de, es, pt, zh, ja, hi, it, ko + 32 more
Rate Limits	Concurrency by plan: Free=2, Pro=3, Startup=5, Scale=15; 429 on exceed

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "cartesia/sonic-3",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "cartesia/sonic-3",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch Google

$0.125/M chars

Gemini 2.5 Flash TTS

Google's fast, cost-efficient TTS model via Gemini API. 30 HD voices across 100+ languages. Auto-detects language. Always returns PCM 24kHz mono audio.

100+ languages Auto language detection 30 HD voices Steerable via instructions

Provider	Google · API Docs
Cost	$0.125 / million characters (~$0.000125 / 1K chars)
Output Formats	pcm_24000
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 26 more
Rate Limits	150 QPM (free tier); paid tier limits vary — see ai.google.dev/gemini-api/docs/rate-limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "google/gemini-2.5-flash-tts",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "google/gemini-2.5-flash-tts",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch Google

$0.25/M chars

Gemini 2.5 Pro TTS

Google's highest-quality TTS model via Gemini API. Studio-quality audio with natural prosody. 30 HD voices across 100+ languages. Always returns PCM 24kHz mono audio.

100+ languages Auto language detection 30 HD voices Studio-quality prosody Steerable via instructions

Provider	Google · API Docs
Cost	$0.25 / million characters (~$0.00025 / 1K chars)
Output Formats	pcm_24000
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 26 more
Rate Limits	125 QPM (free tier); paid tier limits vary — see ai.google.dev/gemini-api/docs/rate-limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "google/gemini-2.5-pro-tts",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "google/gemini-2.5-pro-tts",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch OpenAI

$0.6/M chars

GPT-4o Mini TTS

OpenAI's fast, affordable TTS model. 13 voices, 57+ languages. Supports voice style instructions. Max ~8,000 characters per request.

57+ languages 13 voices Style instructions Multiple output formats

Provider	OpenAI · API Docs
Cost	$0.6 / million characters (~$0.0006 / 1K chars)
Output Formats	mp3, opus, aac, flac, wav, pcm
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 25 more
Rate Limits	Tier-dependent; see platform.openai.com/docs/guides/rate-limits

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "openai/gpt-4o-mini-tts",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "openai/gpt-4o-mini-tts",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch ElevenLabs

$300/M chars

Eleven Multilingual v2

Most lifelike TTS model with rich emotional expression. 10,000 character limit per request (~10 min audio). Supports 29 languages with consistent voice quality.

29 languages Multiple voices Voice settings control High emotional range

Provider	ElevenLabs · API Docs
Cost	$300 / million characters (~$0.3 / 1K chars)
Output Formats	mp3_44100_128, mp3_44100_96, mp3_44100_64, mp3_44100_32, mp3_22050_32, pcm_16000, pcm_22050, pcm_24000, pcm_44100, pcm_48000, opus_48000_32, opus_48000_64, opus_48000_96, opus_48000_128, opus_48000_192, ulaw_8000, alaw_8000
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 19 more
Rate Limits	Concurrency by tier: Free=2, Starter=3, Creator=5, Pro=10, Scale=15, Business=15; character quotas vary by plan

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "elevenlabs/eleven-multilingual-v2",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "elevenlabs/eleven-multilingual-v2",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch ElevenLabs

$300/M chars

Eleven v3

Latest ElevenLabs model with 70+ languages, audio tags ([laughs], [whispers], etc.), and rich emotional expressiveness. 5,000 character limit per request (~5 min audio).

70+ languages Multiple voices Audio tags High emotional range Voice settings control

Provider	ElevenLabs · API Docs
Cost	$300 / million characters (~$0.3 / 1K chars)
Output Formats	mp3_44100_128, mp3_44100_96, mp3_44100_64, mp3_44100_32, mp3_22050_32, pcm_16000, pcm_22050, pcm_24000, pcm_44100, pcm_48000, opus_48000_32, opus_48000_64, opus_48000_96, opus_48000_128, opus_48000_192, ulaw_8000, alaw_8000
Languages	en, es, fr, de, it, pt, nl, ja, ko, zh + 63 more
Rate Limits	Concurrency by tier: Free=2, Starter=3, Creator=5, Pro=10, Scale=15, Business=15; character quotas vary by plan

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "elevenlabs/eleven_v3",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "elevenlabs/eleven_v3",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

TTS BYOK Batch Mistral

$16/M chars

Voxtral Mini TTS

Mistral's TTS model with zero-shot voice cloning and ~100ms latency. 9 languages. Voice determines language. 10 preset voices available; custom voices via Mistral Voices API.

9 languages Zero-shot voice cloning Low latency (~100ms) 10 preset voices

Provider	Mistral · API Docs
Cost	$16 / million characters (~$0.016 / 1K chars)
Output Formats	mp3, wav, pcm, flac, opus
Languages	en, fr, de, es, nl, pt, it, hi, ar
Rate Limits	Workspace-level limits managed at admin.mistral.ai/plateforme/limits; no public per-model rate limits documented

Sample API Call

import httpx

resp = httpx.post(
    "https://router.trelis.com/api/v1/synthesize",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Hello, world!",
        "model": "mistral/voxtral-mini-tts-2603",
    },
)
with open("output.mp3", "wb") as f:
    f.write(resp.content)
print(f"Audio: {len(resp.content)} bytes")
print(f"Cost: ${resp.headers['X-Cost-Dollars']}")

Batch API Call

import httpx, time

# Submit batch TTS job
resp = httpx.post(
    "https://router.trelis.com/api/v1/tts-jobs",
    headers={"Authorization": "Bearer trr_your_key"},
    data={
        "text": "Your text here...",
        "model": "mistral/voxtral-mini-tts-2603",
    },
)
job_id = resp.json()["job_id"]

# Poll for result
while True:
    r = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}",
        headers={"Authorization": "Bearer trr_your_key"},
    ).json()
    if r["status"] in ("completed", "failed"):
        break
    time.sleep(3)

# Download audio
if r["status"] == "completed":
    audio = httpx.get(
        f"https://router.trelis.com/api/v1/tts-jobs/{job_id}?download=true",
        headers={"Authorization": "Bearer trr_your_key"},
    )
    with open("output.mp3", "wb") as f:
        f.write(audio.content)

Available Models

Universal-3 Pro

Scribe v2

Whisper V3

Whisper V3 Turbo

Ursa 2 Enhanced

Nova-3

Gemini 2.5 Pro

Gemini 2.5 Flash

Whisper Large V3

Sonic 3

Gemini 2.5 Flash TTS

Gemini 2.5 Pro TTS

GPT-4o Mini TTS

Eleven Multilingual v2

Eleven v3

Voxtral Mini TTS

Welcome to Trelis Router!