#### Key Information

# Models

### Model Pricing

| Model | Context | Input / 1M tokens | Output / 1M tokens |
| --- | --- | --- | --- |
| grok-4.3 | 1M | $1.25 | $2.50 |
| grok-4.3 | 1M | $1.25 | $2.50 |
| grok-4.3 | 1M | $1.25 | $2.50 |
| grok-4.20-0309-reasoning | 1M | $1.25 | $2.50 |
| grok-4.20-0309-reasoning | 1M | $1.25 | $2.50 |
| grok-4.20-0309-reasoning | 1M | $1.25 | $2.50 |
| grok-4.20-0309-non-reasoning | 1M | $1.25 | $2.50 |
| grok-4.20-0309-non-reasoning | 1M | $1.25 | $2.50 |
| grok-4.20-0309-non-reasoning | 1M | $1.25 | $2.50 |
| grok-build-0.1 | 256k | $1.00 | $2.00 |
| grok-build-0.1 | 256k | $1.00 | $2.00 |
| grok-build-0.1 | 256k | $1.00 | $2.00 |
| grok-4.20-multi-agent-0309 | 1M | $1.25 | $2.50 |
| grok-4.20-multi-agent-0309 | 1M | $1.25 | $2.50 |
| grok-4.20-multi-agent-0309 | 1M | $1.25 | $2.50 |

*Prices shown per million tokens*

### Imagine Pricing

| Model | Cost |
| --- | --- |
| grok-imagine-image | $0.02 / image |
| grok-imagine-image-quality | $0.05 / image |
| grok-imagine-image | $0.02 / image |
| grok-imagine-image-quality | $0.05 / image |
| grok-imagine-image | $0.02 / image |
| grok-imagine-image-quality | $0.05 / image |
| grok-imagine-video-1.5 | $0.080 / sec |
| grok-imagine-video | $0.050 / sec |
| grok-imagine-video | $0.050 / sec |
| grok-imagine-video-1.5 | $0.080 / sec |
| grok-imagine-video | $0.050 / sec |
| grok-imagine-video-1.5 | $0.080 / sec |

### Voice Pricing

| Mode | Cost |
| --- | --- |
| Realtime | $0.05 / min ($3.00 / hr) |
| Realtime Text Input | $0.004 / message (every conversation.item.create) |
| Text to Speech | $15.00 / 1M chars |
| Speech to Text | $0.10 / hr (REST), $0.20 / hr (Streaming) |

## Which model should I choose?

Your choice depends on your use case. We have dedicated models and APIs for audio, image, and video capabilities. For everything else, use Grok 4.3. It is the most intelligent and fastest model we’ve built.

Chat: [Grok 4.3](/developers/models/grok-4.3)

Coding: [Grok 4.3](/developers/models/grok-4.3)

Images: [Grok Imagine API](/developers/models/grok-imagine-image-quality)

Videos: [Grok Imagine API](/developers/models/grok-imagine-video)

Voice: [Grok Voice API](/developers/model-capabilities/audio/voice)

## Additional Information Regarding Models

* **No access to realtime events without search tools enabled**
  * Grok has no knowledge of current events or data beyond what was present in its training data.
  * To incorporate realtime data with your request, enable server-side search tools (Web Search / X Search). See [Web Search](/developers/tools/web-search) and [X Search](/developers/tools/x-search).
* **Chat models**
  * No role order limitation: You can mix `system`, `user`, or `assistant` roles in any sequence for your conversation context.
  * `logprobs` and `top_logprobs` are not supported by models `grok-4.20` and newer. These fields will be silently ignored if set.
* **Image input models**
  * Maximum image size: `20MiB`
  * Maximum number of images: No limit
  * Supported image file types: `jpg/jpeg` or `png`.
  * Any image/text input order is accepted (e.g. text prompt can precede image prompt)

> [!NOTE]
>
> The knowledge cut-off date of Grok 3 and Grok 4 is November, 2024.

## Model Aliases

Some models have aliases to help users automatically migrate to the next version of the same model. In general:

* `<modelname>` is aliased to the latest stable version.
* `<modelname>-latest` is aliased to the latest version. This is suitable for users who want to access the latest features.
* `<modelname>-<date>` refers directly to a specific model release. This will not be updated and is for workflows that demand consistency.

For most users, the aliased `<modelname>` or `<modelname>-latest` are recommended, as you would receive the latest features automatically.