xAI Text to Speech
Speech synthesis billed at $15.00 per 1M input CHARACTERS - the input_price field here is per 1M chars, not tokens.
Data checked 2026-09-06xAI ga
- Context window
- —
- Max output
- —
- Input
- $15.00 per 1M tokens
- Output
- — per 1M tokens
- Released
- 2026-03-16
- Licence
- proprietary
A What it is for
Supports expressive built-in voices, cloned custom voices shared with the Speech-to-Speech API, streaming or batch output, and MP3/WAV/PCM/mu-law/A-law. No public model slug; addressed by endpoint. us-east-1 only.
B Capabilities
streaming
| Input modalities | text |
|---|---|
| Output modalities | audio |
C Others from xAI
| Model | Context | Max out | In $/M | Out $/M | Blended | Status |
|---|---|---|---|---|---|---|
Grok 4.6
grok-4.6
|
500K | — | $2.00 | $6.00 | $3.00 | ga |
Grok 4.5
grok-4.5
|
500K | — | $2.00 | $6.00 | $3.00 | ga |
Grok 4.3
grok-4.3
|
1M | — | $1.25 | $2.50 | $1.56 | ga |
Grok Build 0.1
grok-build-0.1
|
256K | — | $1.00 | $2.00 | $1.25 | ga |
Grok 4.20 (Reasoning)
grok-4.20-0309-reasoning
|
1M | — | $1.25 | $2.50 | $1.56 | ga |
Grok 4.20 (Non-Reasoning)
grok-4.20-0309-non-reasoning
|
1M | — | $1.25 | $2.50 | $1.56 | ga |
Grok 4.20 Multi-Agent
grok-4.20-multi-agent-0309
|
1M | — | $1.25 | $2.50 | $1.56 | beta |
Grok Imagine Image 2.0
grok-imagine-image-2.0
|
— | — | — | — | — | ga |
Grok Imagine Image
grok-imagine-image
|
— | — | — | — | — | ga |
Grok Imagine Image Quality
grok-imagine-image-quality
|
— | — | — | — | — | deprecated |
Grok Imagine Video 1.5
grok-imagine-video-1.5
|
— | — | — | — | — | ga |
Grok Imagine Video
grok-imagine-video
|
— | — | — | — | — | ga |
D Verify before you commit
Model pricing changes without notice and this page is a snapshot. Confirm against the vendor's own page before you build a budget on it.
Source: docs.x.ai · checked 2026-09-06 · xAI pricing · API docs