GPT Audio

OpenAI · Released January 2026

The gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice consistency.

It is part of OpenAI's GPT family, where GPT-6 Astra leads, GPT-6 Sol and GPT-6 Luna cover the capability and speed tiers below it, the GPT-5.6 generation sits behind them, and Pro servings trade speed for deeper computation.

Facts and pricing

Provider

OpenAI

Context window

128K tokens

Input price

30.0 credits / 1M tokens ($2.50 raw)

Output price

120 credits / 1M tokens ($10.00 raw)

Vision (image input)

No

Tool calling

Yes

Extended reasoning

No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.

Zeplik reads text aloud

What GPT Audio is best for

• Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
• Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a frontier model like GPT Audio:

• Review this business plan and give me the three hardest questions an investor would ask
• Rewrite this announcement so it lands with both engineers and executives
• I am choosing between two job offers, help me think through the tradeoffs
• Draft a technical design doc for a rate limiter, including failure modes

OpenAI family

All 71 OpenAI models

Model comparisons

• Claude Opus 5.5 vs GPT-6 Astra
• Claude Opus 5.5 vs GPT-6 Sol
• GPT-6 Sol vs GPT-5.6 Sol
• GPT-6 Sol vs GPT-6 Astra

Frequently asked questions

What is GPT Audio?

GPT Audio is an AI model by OpenAI. The gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice consistency.

How much does GPT Audio cost on Zeplik?

Input tokens cost 30.0 credits per million and output tokens 120 credits per million (1 credit = $0.10; the raw provider rates are $2.50 and $10.00 per million). New accounts start with free credits.

How long can a conversation with GPT Audio be?

GPT Audio has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does GPT Audio support images and tools?

GPT Audio is text-only and supports tool calling.

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