GPT-4o is OpenAI's multimodal model optimized for real-time chat with text, image, and audio capabilities at balanced cost and performance.

It matches GPT-4 Turbo on text/reasoning/coding while being 2x faster, 50% cheaper, and adding significant multimodal improvements.

It excels at multimodal applications, real-time voice assistants, vision tasks, multilingual support, and high-volume production workloads.

Audio responses in as little as 232ms (average 320ms), enabling near real-time voice interactions.

How much does GPT-4o cost?

GPT-4o pricing is $2.50 per 1M input tokens and $10.00 per 1M output tokens. Cached input tokens cost $1.25 per 1M.

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GPT-4o

Real-time chat and multimodal apps with low latency.

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Community Sentiment

Mostly Positive

Based on Reddit reviews

Community Verdict

Best for Multimodal Apps

Based on Reddit reviews

Input Modalities

Text, Images

Output Modalities

Text

Price / 1M tokens

$2.5$10

InputOutput

Best For

High-volume production workloads

Multilingual applications (50+ languages)

Vision tasks with image understanding

Function calling and structured outputs

Fine-tuning for custom applications

Avoid For

Deep reasoning tasks (use o-series)

Maximum accuracy (use o3 or o3-pro)

When GPT-4o mini is enough

Tasks requiring large context windows

128,000 context window

16,384 max output tokens

Oct 1, 2023 knowledge cutoff

Reasoning not supported

Parameters

While OpenAI documents a unified parameter set for the Chat Completions and Responses APIs, each model supports only a limited subset of model-specific parameters and values. This table lists the supported model-specific GPT-4o API parameters and allowed values.

Parameter	Description	Path	Supported Values
Model	Selects the model version for the request	model	gpt-4ogpt-4o-2024-11-20
Message roles	Defines the role of the message in the input	messages[].role	developersystemuserassistant
Max output tokens	Max output tokens the model may generate	max_completion_tokens	16 .. 16,384
Output format	Specifies the output format, including structured JSON schemas	response_format	textjson_objectjson_schema
Temperature	Controls how random or deterministic the output is	temperature	0 .. 2
Top P	Controls how diverse the output tokens are	top_p	0 .. 1
Presence penalty	Encourages the model to introduce new topics	presence_penalty	-2 .. 2
Frequency penalty	Reduces repetition of the same words or phrases	frequency_penalty	-2 .. 2
Reasoning effort	Controls the depth of internal reasoning used by the model	reasoning_effort	Not supported
Reasoning summary	Controls whether the model produces a concise or detailed reasoning summary	reasoning_summary	Not supported
Verbosity	Controls how brief or detailed the generated response is	verbosity	Not supported

Pricing

GPT-4o API pricing is based on token usage for input and output. Prices are listed per 1M tokens, with lower rates for cached input. Tool-specific features may add per-call fees.

Text tokens

Per 1M tokens

Input$2.50

Cached input$1.25

Output$10.00

Example costs (GPT-4o)

TASK

APPROX COST

Chat conversation (1k tokens)

~$0.003

Image analysis

~$0.01–$0.05

Voice assistant session

~$0.05–$0.20

Modalities

What the model can accept and produce

TextInput and output

ImagesInput only

AudioNot supported

VideoNot supported

Features

Platform-level capabilities

StreamingSupported

Function callingSupported

Structured outputsSupported

Fine-tuningSupported

DistillationSupported

Predicted outputsSupported

Tools

Tools supported by this model when using the Responses API.

Web searchSupported

File searchSupported

Image generationSupported

Code interpreterSupported

MCPSupported

Computer useNot supported

Snapshots

GPT-4o model snapshots ensure stable behavior by locking a specific version. See all available snapshots and aliases below.

gpt-4o

↪ gpt-4o-2024-11-20

gpt-4o-2024-11-20

FAQs

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