Eleven v3 API: Endpoint & Pricing
Eleven v3 offers text-to-speech text-to-speech through LLM.API for assistants, narration, and IVR prototypes.
What is Eleven v3?
Eleven v3 synthesizes spoken audio from text through LLM.API. Text-to-speech model by Elevenlabs. Use api id `eleven_v3` with the same key as chat and media models.
Can you self-host Eleven v3?
No. We found no public weights for Eleven v3 on Hugging Face, so there is nothing to download, quantize or serve on your own GPUs: no VRAM budget, no vLLM or GGUF build to plan for. The only way to run it is over an API.
Skip the deploy — use LLM.API as your endpoint
No GPUs, no quantization trade-offs. Same model, OpenAI-compatible, with custom volume discounts on request.
Providers
LLM.API routes Eleven v3 to the providers below, with discounted effective rates versus list price.
List price by provider
InputOutputProvider list prices; the LLM.API discount applies on top.
| Provider | Pricing | Context | Capabilities |
|---|---|---|---|
| elevenlabs | in $0; out — per 1M characters | — | — |
Prices and availability from the LLMAPI catalogue, updated nightly. Last updated 11 Oct 2026.
Try this model
Test Eleven v3 right here — free to start.
Suggestions for your first prompt
Code snippet
Call Eleven v3 through the OpenAI-compatible API — TTS via LLM.API (see docs for audio endpoints).
Switching from OpenAI? Change 2 lines.
- base_url="https://api.openai.com/v1"
- api_key="YOUR_OPENAI_KEY"
+ base_url="https://api.llmapi.ai/v1"
+ api_key="YOUR_LLMAPI_KEY"Everything else stays the same — SDK, message format, tools, streaming. Set model to eleven_v3 and the call runs unchanged.
curl https://api.llmapi.ai/v1/chat/completions \
-H "Authorization: Bearer $LLMAPI_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "eleven_v3",
"messages": [
{"role": "user", "content": "Give me three crisp launch checklist items."}
]
}'from openai import OpenAI
client = OpenAI(
api_key="YOUR_LLMAPI_KEY",
base_url="https://api.llmapi.ai/v1",
)
resp = client.chat.completions.create(
model="eleven_v3",
messages=[
{"role": "system", "content": "You are a precise product assistant."},
{"role": "user", "content": "Give me three crisp launch checklist items."},
],
)
print(resp.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.LLMAPI_KEY,
baseURL: "https://api.llmapi.ai/v1",
});
const resp = await client.chat.completions.create({
model: "eleven_v3",
messages: [
{ role: "user", content: "Give me three crisp launch checklist items." },
],
});
console.log(resp.choices[0].message.content);stream = client.chat.completions.create(
model="eleven_v3",
messages=[{"role": "user", "content": "Write a haiku about latency."}],
stream=True,
)
for chunk in stream:
delta = chunk.choices[0].delta.content
if delta:
print(delta, end="", flush=True){
"model": "eleven_v3",
"messages": [
{"role": "system", "content": "You are a precise product assistant."},
{"role": "user", "content": "Give me three crisp launch checklist items."}
]
}ENDPOINTS
Supported endpoints & features
Base URL https://api.llmapi.ai/v1 · model ID eleven_v3 · OpenAI-compatible.
POST /v1/chat/completionsChat Completions — supported
| Feature | Status | How to set it |
|---|---|---|
| Function calling (tools) | Not supported | tools, tool_choice |
| Parallel tool calls | Not supported | parallel_tool_calls |
| JSON mode | Supported | response_format: {"type": "json_object"} |
| Structured outputs | Not supported | response_format: {"type": "json_schema", …} |
| Streaming | Not supported | stream: true |
| Vision (image input) | Not supported | image_url content parts |
| Web search | Not supported | web_search |
ERRORS
Errors & fallback routing
| Code | What it means | What to do |
|---|---|---|
401 | Missing or invalid API key. | Send Authorization: Bearer YOUR_LLMAPI_KEY and check the key is active. |
429 | Rate limited, or the upstream provider is throttling the request. | Back off and retry with jitter; the gateway also retries the request on another provider where one is available. |
5xx | Upstream provider error or timeout. | Retry; fallback routing sends the retry to the next healthy provider for this model. |
When a provider fails or throttles, the request is routed to the next provider serving this model — the ones listed in the providers table above.
Eleven v3 in production
What the model is good at.
Prototype speed
Lets teams ship voice demos without recording studios. Reflects text-to-speech positioning for this endpoint.
Natural speech synthesis
Turns text into spoken audio for assistants, accessibility, and media. Relevant for `eleven_v3` workloads on LLM.API.
Voice product UX
Enables talk-back experiences in apps and devices. Reflects text-to-speech positioning for this endpoint.
Content narration
Narrates articles, lessons, and product guides. Relevant for `eleven_v3` workloads on LLM.API.
IVR and alerts
Generates spoken prompts for support and notification flows.
What you get when you call Eleven v3 through LLM.API.
Unified AI Routing
Practical: Reach Eleven v3 and sibling models through one OpenAI-compatible endpoint.
One endpoint, every model.Cost Control
Production: Compare provider price points and keep spend visible as you scale Eleven v3.
More performance, less spend.Reliability Layer
Retry and route across configured providers when a single upstream blips.
Never go dark on users.Observability
Production: Trace prompts, tokens, and errors for Eleven v3 alongside the rest of your stack.
See every token, everywhere.Drop-in SDKs
Practical: Keep using familiar OpenAI client patterns with base URL https://api.llmapi.ai/v1.
Think tasks, not models.Model Breadth
Production: Swap Eleven v3 for chat, media, or embedding alternatives without rewriting auth.
Scale from 1 to millions.
When to Use — When NOT to Use
Use it if...
- You want API-driven voice prototypes that can go to production (Eleven v3)
- Your UX requires spoken responses or narration (Eleven v3)
- You need text-to-speech without managing voice infrastructure (Eleven v3)
Avoid if...
- You only need embeddings or OCR
- You require a specific celebrity voice you do not have rights to
- You need speech recognition rather than synthesis
COMMUNITY
What developers say about text-to-speech models
Summarised from publicly published developer and community reviews of this model family. Opinions are the sources’, not LLM.API’s, and may not be specific to Eleven v3.
- Community consensus still puts ElevenLabs-class voices at the top for realism and emotional range.
- The debate has shifted from quality to value, as open-source voices mature and heavy usage pushes teams to higher tiers.
- Developers advise designing for rate limits early — 429 handling on generation calls is a common production surprise.
SOURCES
Frequently Asked Questions
Which providers serve Eleven v3?
LLM.API currently lists: elevenlabs. Availability can vary by region and account.
Can I use tools or structured outputs with Eleven v3?
Tooling support varies; for pure tts models, prefer the modalities listed rather than assuming chat tools.
Is Eleven v3 a chat model?
No—Eleven v3 is categorized as a tts model. Use the matching API surface rather than assuming chat completions.
How is Eleven v3 priced on LLM.API?
Listed pricing metadata shows: In $120.00 / 1M tokens. LLM.API may offer discounted effective rates (illustrative ~30% callout vs list when available).. Confirm live rates in the LLM.API dashboard or docs before production budgeting.
Does Eleven v3 support streaming?
Streaming depends on the active provider; check the providers table on this page for flags.
What is Eleven v3?
Text-to-speech model by Elevenlabs. On LLM.API it is addressed as `eleven_v3`.
When should I choose Eleven v3?
You want API-driven voice prototypes that can go to production — especially when you specifically need Eleven v3.
What is the context length for Eleven v3?
Reported context for Eleven v3 is See provider specs. Always verify the active provider row if multiple providers are listed.
What modalities does Eleven v3 support?
Eleven v3 accepts text and produces audio according to its architecture metadata on LLM.API.
Where is the canonical page for Eleven v3?
https://llmapi.ai/models/eleven-v3/
What are limitations of Eleven v3?
Like other API models, Eleven v3 can be wrong, incomplete, or uneven on edge cases. Validate outputs for high-stakes use. Media/OCR/STT models additionally depend on input quality.
Can I clone any voice with Eleven v3?
Only use voices and styles you have rights to. Follow provider and LLM.API acceptable-use rules.
COMPARE
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