GPT-4o Audio
Preview multimodal model that accepts and outputs audio, optimized for natural voice interactions and real-time conversational experiences.
GPT-4o Audio at a glance
Context window
128K tokens
Input price
$2.5
per 1M tokens
Output price
$10
per 1M tokens
Why use GPT-4o Audio
Strengths, benchmarks, and where GPT-4o Audio fits in your team's workflow.
1. True multimodal audio model
- Accepts raw audio as input and produces audio or text as output.
- Enables hands-free, voice-first app experiences.
2. Natural real-time speech interaction
- Low-latency audio generation suitable for conversational agents.
- Great for voice assistants, phone bots, and interactive voice UI.
3. Large 128K context window
- Supports long conversations, call transcripts, instructions, or multi-part interactions.
- Ideal for building persistent voice agents or phone workflows.
4. High-output capacity
- Up to 16,384 max output tokens for extended responses or long explanations.
- Suitable for complex reasoning tasks in voice format.
5. Hybrid text + audio workloads
- Combine audio input/output with text prompts, instructions, or structured control.
- Useful for customer support bots, spoken form systems, IVR replacements, etc.
6. Compatible with the latest APIs
- Works with Chat Completions, Responses API, Realtime API, and Assistants.
- Supports streaming, function calling, and advanced developer tooling.
7. Strong performance for a preview model
- High reasoning and expression abilities relative to most audio-capable models.
- Designed for production-style experimentation prior to full release.
8. Ideal for next-gen voice applications
- Build lifelike AI agents, interview bots, tutoring systems, and spoken knowledge tools.
- Perfect for startups building audio-first user experiences.
Power your team with GPT-4o Audio
Appaca is the AI workspace for operators. Build internal tools and AI co-workers powered by GPT-4o Audio - connected to your real data and ready for your whole team. No code, no deployment.
Internal transcription tools
Build internal tools that process audio with GPT-4o Audio - call summaries, meeting notes, voice search. Describe what you need, no code needed.
Automate audio processing
Schedule transcription to run automatically inside your workspace, then push summaries to Slack or your built-in database. No servers to manage.
One workspace for the whole team
Give everyone on your team access to audio-powered tools and AI co-workers from a single shared workspace, with team access built in.
Describe it, and it's built
Tell the Appaca agent what your team needs and it builds a working app powered by GPT-4o Audio - connected to the tools you already use.
Where teams use GPT-4o Audio
See how teams put GPT-4o Audio to work inside Appaca - internal tools and AI agents that work around you.
Sales
Transcribe and summarise sales calls with GPT-4o Audio, then push next steps straight into your pipeline.
Explore Appaca for SalesHR
Turn interviews and meetings into structured notes your people team can search and share.
Explore Appaca for HROperations
Process recorded standups, briefings, and voice notes into reports automatically.
Explore Appaca for OperationsGPT-4o Audio pricing
Audio pricing
Text input
$2.5
per 1M tokens
Text output
$10
per 1M tokens
Audio input
$40
per 1M tokens
Audio output
$80
per 1M tokens
More OpenAI models
Compare other OpenAI models in the Appaca AI models directory - specs, pricing, and use cases for each.
GPT-5.5
OpenAI's smartest and most capable model yet for agentic coding, knowledge work, and computer use, delivering a new class of intelligence at GPT-5.4 latency.
View modelGPT-5.4
OpenAI's frontier model for complex professional work with best intelligence at scale for agentic, coding, and professional workflows.
View modelGPT-5.2
Previous frontier model for complex professional work with configurable reasoning effort.
View modelCompare GPT-4o Audio with other models
See how GPT-4o Audio stacks up against other audio models - pricing, context windows, and strengths side by side.
Build internal AI tools with GPT-4o Audio
Describe the tool your team needs and get a working app powered by GPT-4o Audio - with a built-in database, team access, and integrations. No code, no deployment.