How much does Gemini 3.1 Flash TTS Preview cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Gemini 3.1 Flash TTS Preview costs about $3,300 per month at Google's list prices ($1.00 per 1M input tokens, $20.00 per 1M output tokens).

Does Gemini 3.1 Flash TTS Preview support prompt caching?

No cache read price is published for Gemini 3.1 Flash TTS Preview.

How long is Gemini 3.1 Flash TTS Preview's context window?

Gemini 3.1 Flash TTS Preview accepts up to 8,192 tokens (8.2K) of context and returns up to 16,384 tokens per response.

Gemini 3.1 Flash TTS Preview API Pricing

Google · released Apr 15, 2026 · 8.2K context · API model ID gemini-3.1-flash-tts-preview

Gemini 3.1 Flash TTS Preview by Google API pricing: $1.00 per 1M input tokens and $20.00 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

Gemini 3.1 Flash TTS Preview prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$1.00
Output	$20.00
Cache read	Not published
Cache write	Not published

Google's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Estimated monthly cost

$3,300

per month

per day: $110.00
per request: $0.011

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$3,300/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$2,700/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$2,700/mo

Context and capabilities

Context: 8,192 tokens
Max output: 16,384 tokens
Input: text
Output: audio
Knowledge cutoff: January 2025
Open weights: No
Tool calling: No
Reasoning: Yes
Structured outputs: No

Capabilities and limits as listed by models.dev.

Similarly priced models

Kimi K3 · $3.00 in / $15.00 out
Gemini 3.1 Pro Preview · $2.00 in / $12.00 out
Claude Opus 5.5 · $4.00 in / $20.00 out
Claude Sonnet 5.5 · $2.00 in / $10.00 out

Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does Gemini 3.1 Flash TTS Preview cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Gemini 3.1 Flash TTS Preview costs about $3,300 per month at Google's list prices ($1.00 per 1M input tokens, $20.00 per 1M output tokens).
Does Gemini 3.1 Flash TTS Preview support prompt caching?: No cache read price is published for Gemini 3.1 Flash TTS Preview.
How long is Gemini 3.1 Flash TTS Preview's context window?: Gemini 3.1 Flash TTS Preview accepts up to 8,192 tokens (8.2K) of context and returns up to 16,384 tokens per response.