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GPT-4o Mini TTS API Price Speech Synthesis

OpenAI logo OpenAI · gpt-4o-mini-tts

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Input · Cache Miss
$0.6 /1M tokens
Output
$12 /1M tokens
Cache Hit Input
— /1M tokens
BillingUSD · 1M tokens
Context Window2K tokens
ModalitiesText / Audio
Deep Thinking—
Verified Date2026-10-09
Official pricing pagedevelopers.openai.com/api/docs/models/gpt-4o-mini-tts ↗

Source text: the note below is the model's official text, kept in its original Chinese and not translated.

页面标注 Deprecated(含快照 gpt-4o-mini-tts-2025-12-15、gpt-4o-mini-tts-2025-03-20 亦标 Deprecated);输入为文本 tokens,输出为音频 tokens;页面称最大输入 tokens 为 2000,已填入 context。厂商名 OpenAI 不在给定已知厂商列表中,故取页面原文厂商名。

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Monthly Cost Estimate

30 days · no cache hits · list price

Light Load
1M Input + 0.3M Output/ day
$126/month
Medium Business
5M Input + 1.5M Output/ day
$630/month
Heavy Agent
10M Input + 3M Output/ day
$1,260/month

Free quotas, tiered pricing, batch discounts, and time-based pricing are not included; refer to official bills.

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FAQ

How much does the GPT-4o Mini TTS API cost?

Input $0.6/1M tokens, output $12/1M tokens

How large is the GPT-4o Mini TTS context window?

2K tokens. Handles long documents, multi-turn conversations and large-scale inputs.

Which input modalities does GPT-4o Mini TTS support?

Text / Audio.

What is the approximate monthly cost of GPT-4o Mini TTS?

Depends on volume: light use (1M input + 300K output per day) ≈ $126/month; medium (5M + 1.5M) ≈ $630/month; heavy agents (10M + 3M) ≈ $1,260/month. Cache hits, batch discounts and tiered pricing can lower this further.

How does GPT-4o Mini TTS compare with peers on value?

OpenAI GPT-4o Mini TTS is priced low among comparable models; compare against similar models. See the Pricemon market table for a full comparison.

What use cases suit GPT-4o Mini TTS?

Good for: voice-overs, audiobooks, social media, navigation systems, accessibility.

Does GPT-4o Mini TTS have a free tier?

Check OpenAI's official pricing page for the latest free quota, trial policy and tiered pricing. Policies differ by vendor and change over time.

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