# GPT-4o

> For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.

> Fast, intelligent, flexible GPT model

Model ID: `gpt-4o`

GPT-4o (“o” for “omni”) is our versatile, high-intelligence flagship model.
It accepts both text and image inputs, and produces text outputs (including Structured Outputs).
It is the best model for most tasks, and is our most capable model outside of our o-series models.

## Model details

- Default snapshot: `gpt-4o-2024-08-06`
- Input modalities: text, image
- Output modalities: text
- 128,000 context window
- 16,384 max output tokens
- Oct 01, 2023 knowledge cutoff

## Pricing

Pricing is based on the number of tokens used, or other metrics based on the model type. For tool-specific models, like search and computer use, there’s a fee per tool call. See details in the [pricing page](/api/docs/pricing).

### Text tokens

| Metric | Price | Unit |
| --- | ---: | --- |
| Input | $2.5 | 1M tokens |
| Cached input | $1.25 | 1M tokens |
| Output | $10 | 1M tokens |

## Endpoints

| Endpoint | Route | Support |
| --- | --- | --- |
| Live | `v1/live/sessions` | Not supported |
| Chat Completions | `v1/chat/completions` | Supported |
| Responses | `v1/responses` | Supported |
| Realtime | `v1/realtime` | Not supported |
| Realtime translation | `v1/realtime/translations` | Not supported |
| Realtime transcription | `v1/realtime/transcription_sessions` | Not supported |
| Assistants | `v1/assistants` | Supported |
| Batch | `v1/batch` | Supported |
| Fine-tuning | `v1/fine-tuning` | Supported |
| Embeddings | `v1/embeddings` | Not supported |
| Image generation | `v1/images/generations` | Not supported |
| Videos | `v1/videos` | Not supported |
| Image edit | `v1/images/edits` | Not supported |
| Speech generation | `v1/audio/speech` | Not supported |
| Transcription | `v1/audio/transcriptions` | Not supported |
| Translation | `v1/audio/translations` | Not supported |
| Moderation | `v1/moderations` | Not supported |
| Completions (legacy) | `v1/completions` | Not supported |

## Supported features

- streaming
- structured_outputs
- predicted_outputs
- file_search
- file_uploads
- fine_tuning
- function_calling
- image_input
- web_search

## Supported tools

Tools supported by this model when using the Responses API.

- function_calling
- web_search
- file_search
- image_generation
- code_interpreter
- mcp

## Quick comparison

| Model | Input | Cached input | Output |
| --- | ---: | ---: | ---: |
| GPT-4o | $2.5 | $1.25 | $10 |
| GPT-4o Mini | $0.15 | $0.075 | $0.6 |
| o3-mini | $1.1 | $0.55 | $4.4 |

## Snapshots

Snapshots let you lock in a specific version of the model so that performance and behavior remain consistent. Below is a list of all available snapshots and aliases for GPT-4o.

- `gpt-4o-2024-11-20`
- `gpt-4o-2024-08-06`
- `gpt-4o-2024-05-13`

## Rate limits

Rate limits ensure fair and reliable access to the API by placing specific caps on requests, tokens, audio duration, or other usage within a given time period. Your usage tier determines how high these limits are set and automatically increases as you send more requests and spend more on the API.

### default

| Tier | RPM | TPM | Batch queue limit |
| --- | ---: | ---: | ---: |
| Tier 1 | 500 | 30,000 | 90,000 |
| Tier 2 | 5,000 | 450,000 | 1,350,000 |
| Tier 3 | 5,000 | 800,000 | 50,000,000 |
| Tier 4 | 10,000 | 2,000,000 | 200,000,000 |
| Tier 5 | 10,000 | 30,000,000 | 5,000,000,000 |