Long Form API Pricing
As of October 10, 2026, Long Form costs $100.00 per 1M characters on AWS - Polly.
- Per 1M characters
- $100.00
- Providers
- 1
- Added to LiteLLM
- December 2025
Long Form pricing by provider
1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.
| Provider | Model name in LiteLLM | Per 1M chars | Context |
|---|---|---|---|
| AWS - Polly | aws_polly/long-form | $100.00 | – |
What Long Form costs in practice
Narrating 500,000 characters
| AWS - Polly | $50.00 |
Use Long Form with LiteLLM
Call Long Form through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/audio/speech. LiteLLM tracks the cost of every request at these prices.
from litellm import speech
response = speech(
model="aws_polly/long-form",
input="Hello from LiteLLM",
voice="alloy",
)model_list:
- model_name: long-form
litellm_params:
model: aws_polly/long-form
# credentials: see the provider's LiteLLM docs pagecurl http://0.0.0.0:4000/v1/audio/speech \
-H "Content-Type: application/json" \
-H "Authorization: Bearer sk-1234" \
-d '{
"model": "long-form",
"input": "Hello from LiteLLM",
"voice": "alloy"
}'Long Form FAQ
How much does Long Form cost?
Long Form costs $100.00 per 1M characters on AWS - Polly.
Which providers offer Long Form?
Long Form is available from AWS - Polly through LiteLLM, using the model name aws_polly/long-form.
How do I call Long Form with an OpenAI-compatible API?
Use the LiteLLM Python SDK with model="aws_polly/long-form", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/audio/speech from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.
When did LiteLLM add Long Form?
Long Form was added to LiteLLM's model price file in December 2025.
Sources
Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:
LiteLLM docs: AWS - Polly.
Provider pages: AWS - Polly.